ERDDAP - variableName

Easy Access to PMEL Scientific Data
The Pacific Marine Environmental Laboratory's ERDDAP data server for public access to scientific data

NOAA OAR PMEL

Subset	tabledap	Make A Graph	files	Title	Summary	FGDC	ISO 19115	Info	Background Info	RSS	Email	Institution	Dataset ID
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry ACEASIA Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ACEASIA_RHBrown_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ACEASIA_RHBrown_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_ACEASIA_RHBrown_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry ACEASIA Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_ACEASIA_RHBrown_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ACEASIA_RHBrown_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ACEASIA_RHBrown_aerosol_sizedist/	PMEL Atmospheric Chemistry ACEASIA Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ACEASIA_RHBrown_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ACEASIA_RHBrown_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ACEASIA_RHBrown_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ACEASIA_RHBrown_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_ACEASIA_RHBrown_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry ATOMIC Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ATOMIC_RHBrown_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ATOMIC_RHBrown_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_ATOMIC_RHBrown_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry ATOMIC Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_ATOMIC_RHBrown_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ATOMIC_RHBrown_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ATOMIC_RHBrown_aerosol_sizedist/	PMEL Atmospheric Chemistry ATOMIC Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ATOMIC_RHBrown_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ATOMIC_RHBrown_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ATOMIC_RHBrown_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ATOMIC_RHBrown_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_ATOMIC_RHBrown_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_CalNex_Atlantis_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry CalNex Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_CalNex_Atlantis_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_CalNex_Atlantis_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_CalNex_Atlantis_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_CalNex_Atlantis_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_CalNex_Atlantis_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_CalNex_Atlantis_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_CalNex_Atlantis_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry CalNex Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_CalNex_Atlantis_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_CalNex_Atlantis_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_CalNex_Atlantis_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_CalNex_Atlantis_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_CalNex_Atlantis_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_CalNex_Atlantis_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_CalNex_Atlantis_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_CalNex_Atlantis_aerosol_sizedist/	PMEL Atmospheric Chemistry CalNex Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (25 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_CalNex_Atlantis_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_CalNex_Atlantis_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_CalNex_Atlantis_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_CalNex_Atlantis_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_CalNex_Atlantis_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_CalNex_Atlantis_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_DYNAMO_Revelle_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry DYNAMO Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_DYNAMO_Revelle_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_DYNAMO_Revelle_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_DYNAMO_Revelle_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_DYNAMO_Revelle_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry DYNAMO Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_DYNAMO_Revelle_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_DYNAMO_Revelle_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_DYNAMO_Revelle_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_DYNAMO_Revelle_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_DYNAMO_Revelle_aerosol_sizedist/	PMEL Atmospheric Chemistry DYNAMO Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (19 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_DYNAMO_Revelle_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_DYNAMO_Revelle_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_DYNAMO_Revelle_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_DYNAMO_Revelle_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_DYNAMO_Revelle_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ICEALOT_Knorr_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry ICEALOT Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ICEALOT_Knorr_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ICEALOT_Knorr_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ICEALOT_Knorr_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_ICEALOT_Knorr_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry ICEALOT Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ICEALOT_Knorr_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ICEALOT_Knorr_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_ICEALOT_Knorr_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_ICEALOT_Knorr_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_ICEALOT_Knorr_aerosol_sizedist/	PMEL Atmospheric Chemistry ICEALOT Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (25 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_ICEALOT_Knorr_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_ICEALOT_Knorr_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_ICEALOT_Knorr_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_ICEALOT_Knorr_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_ICEALOT_Knorr_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (APS), DRY data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (APS) - DRY data\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\ndiameter_aero (midpoint Diameter(aerodynamic), micrometers)\ntrajectory_id\nlatitude (degrees_north)\nlongitude (degrees_east)\naltitude (height above mean sea level, m)\ndNdlogDp (Normalized particle number size distribution (Log-normal), micrometer-1 cm-3)\ndlogDp (diameter bin width, micrometer)\ndN (Particle number size distribution, cm-3)\ndSdlogDp (Normalized particle surface area distribution (Log-normal), micrometer2 micrometer-1 cm-3)\ndS (Particle surface area size distribution, micrometer2 cm-3)\ndVdlogDp (Normalized Particle volume distribution (Log-normal), micrometer3 micrometer-1 cm-3)\ndV (Particle volume size distribution, micrometer3 cm-3)\nduration (second)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_dry
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (APS), RH60 data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (APS) - RH60 data. PMEL Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (DMPS), DRY data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (DMPS) - DRY data\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\ndiameter (midpoint Diameter(Stokes), micrometers)\ntrajectory_id\nlatitude (degrees_north)\nlongitude (degrees_east)\naltitude (height above mean sea level, m)\ndNdlogDp (Normalized particle number size distribution (Log-normal), micrometer-1 cm-3)\ndlogDp (diameter bin width, micrometer)\ndN (Particle number size distribution, cm-3)\ndSdlogDp (Normalized particle surface area distribution (Log-normal), micrometer2 micrometer-1 cm-3)\ndS (Particle surface area size distribution, micrometer2 cm-3)\ndVdlogDp (Normalized Particle volume distribution (Log-normal), micrometer3 micrometer-1 cm-3)\ndV (Particle volume size distribution, micrometer3 cm-3)\nduration (second)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_dry
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (DMPS), RH60 data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution (DMPS) - RH60 data. PMEL Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution, DRY data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution - DRY data\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\ndiameter (midpoint Diameter(Stokes), micrometers)\ntrajectory_id\nlatitude (degrees_north)\nlongitude (degrees_east)\naltitude (height above mean sea level, m)\ndNdlogDp (Normalized particle number size distribution (Log-normal), micrometer-1 cm-3)\ndlogDp (diameter bin width, micrometer)\ndN (Particle number size distribution, cm-3)\ndSdlogDp (Normalized particle surface area distribution (Log-normal), micrometer2 micrometer-1 cm-3)\ndS (Particle surface area size distribution, micrometer2 cm-3)\ndVdlogDp (Normalized Particle volume distribution (Log-normal), micrometer3 micrometer-1 cm-3)\ndV (Particle volume size distribution, micrometer3 cm-3)\nintN (Integral Number Concentration, cm-3)\nintS (Integral Surface Area Concentration, micrometer2 cm-3)\nintV (Integral Volume Concentration, micrometer3 cm-3)\nduration (second)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist_dry
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-1_Atlantis_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-1_Atlantis_aerosol_sizedist/	PMEL Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution, RH60 data	Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 Aerosol Size Distribution - RH60 data. PMEL Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-1_Atlantis_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-1_Atlantis_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-1_Atlantis_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-1_Atlantis_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_NAAMES-1_Atlantis_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_NAAMES-2_Atlantis_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_NAAMES-2_Atlantis_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-2_Atlantis_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-2_Atlantis_aerosol_sizedist/	PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-2_Atlantis_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-2_Atlantis_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-2_Atlantis_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-2_Atlantis_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_NAAMES-2_Atlantis_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_NAAMES-3_Atlantis_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_NAAMES-3_Atlantis_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-3_Atlantis_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-3_Atlantis_aerosol_sizedist/	PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-3_Atlantis_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-3_Atlantis_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-3_Atlantis_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-3_Atlantis_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_NAAMES-3_Atlantis_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_NAAMES-4_Atlantis_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_NAAMES-4_Atlantis_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_NAAMES-4_Atlantis_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_NAAMES-4_Atlantis_aerosol_sizedist/	PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_NAAMES-4_Atlantis_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_NAAMES-4_Atlantis_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_NAAMES-4_Atlantis_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_NAAMES-4_Atlantis_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_NAAMES-4_Atlantis_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist/	PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (25 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_TexAQS-GoMACCS_RHBrown_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_VOCALS_RHBrown_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_VOCALS_RHBrown_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_VOCALS_RHBrown_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_VOCALS_RHBrown_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_VOCALS_RHBrown_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_VOCALS_RHBrown_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_VOCALS_RHBrown_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_VOCALS_RHBrown_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_VOCALS_RHBrown_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_VOCALS_RHBrown_aerosol_sizedist/	PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (19 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_VOCALS_RHBrown_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_VOCALS_RHBrown_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_VOCALS_RHBrown_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_VOCALS_RHBrown_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_VOCALS_RHBrown_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS_RHBrown_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry WACS Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS_RHBrown_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS_RHBrown_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS_RHBrown_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS_RHBrown_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS_RHBrown_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_WACS_RHBrown_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS_RHBrown_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry WACS Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS_RHBrown_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS_RHBrown_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS_RHBrown_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS_RHBrown_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS_RHBrown_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_WACS_RHBrown_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS_RHBrown_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS_RHBrown_aerosol_sizedist/	PMEL Atmospheric Chemistry WACS Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS_RHBrown_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS_RHBrown_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS_RHBrown_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS_RHBrown_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS_RHBrown_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_WACS_RHBrown_aerosol_sizedist
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_aps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_aps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_aps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS-2_Knorr_aerosol_sizedist_aps/	PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution (APS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS-2_Knorr_aerosol_sizedist_aps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS-2_Knorr_aerosol_sizedist_aps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS-2_Knorr_aerosol_sizedist_aps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS-2_Knorr_aerosol_sizedist_aps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS-2_Knorr_aerosol_sizedist_aps&showErrors=false&email=	NOAA	ACG_WACS-2_Knorr_aerosol_sizedist_aps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_dmps.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_dmps	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist_dmps.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS-2_Knorr_aerosol_sizedist_dmps/	PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution (DMPS) data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (13 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS-2_Knorr_aerosol_sizedist_dmps_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS-2_Knorr_aerosol_sizedist_dmps_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS-2_Knorr_aerosol_sizedist_dmps/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS-2_Knorr_aerosol_sizedist_dmps.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS-2_Knorr_aerosol_sizedist_dmps&showErrors=false&email=	NOAA	ACG_WACS-2_Knorr_aerosol_sizedist_dmps
https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist.subset	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist	https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_WACS-2_Knorr_aerosol_sizedist.graph	https://data.pmel.noaa.gov/pmel/erddap/files/ACG_WACS-2_Knorr_aerosol_sizedist/	PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution data	Pacific Marine Environmental Laboratory (PMEL) Size Distributions\n \n Aerosol inlet:\nAmbient aerosol particles were sampled at 18 m above sea level through a heated mast. The mast extended 5 m above and forward of the aerosol measurement container. The inlet was a rotating cone-shaped nozzle that was automatically positioned into the relative wind to maintain nominally isokinetic flow and minimize the loss of supermicrometer particles. Air entered the inlet through a 5 cm diameter hole, passed through a 7 degree expansion cone, and then into the 20 cm inner diameter sampling mast. The flow through the mast was 1 m3 min-1. The transmission efficiency of the inlet for particles with aerodynamic diameters less than 6.5 um (the largest size tested) is greater than 95% [Bates et al., 2002].\n\nThe bottom 1.5 m of the mast were heated to establish a stable reference relative humidity (RH) for the sample air controlled to the indicated target sample RH. Twenty one 1.6 cm inner diameter stainless steel tubes extending into the heated portion of the mast were connected to downstream aerosol instrumentation with either conductive silicon tubing or stainless steel tubing for analysis of organic aerosol.\n\nDMPS (datasets denoted by _aerosol_sizedist_dmps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to a tandem DMPS system that measured particle size distributions in the range of 0.020 to 0.8 micrometers Stokes diameter. The tandem DMPS consists of an \"Aitken\" DMPS (0.020 to 0.2 um) and an \"Accumulation\" DMPS (0.2 to 0.8 um). The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nAPS (datasets denoted by _aerosol_sizedist_aps_):\nOne of the twenty one 1.6 cm diameter tubes was used to supply ambient air to an APS that measured particle size distributions in the range of 0.96 to 10 micrometers Stokes diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the ship's sampling mast, distribution tubing and APS inlet. The distributions have been cleaned of all data from times of instrument malfunction or calibration.\n\nMerged (datasets denoted by _aerosol_sizedist):\nThese datasets include particle size distributions in the diameter range of 0.005 to 10 micrometers Stokes diameter. The distributions are a combination of DMPS and APS size distribution data where the APS diameters have been converted to Stokes diameters using densities calculated from measured chemistry. The diameter channels in the overlap region were chosen in the following manner: the last DMPS channel was discarded and, after converting to Stokes diameters, the first APS diameter channel that was larger than the last valid DMPS channel was chosen as the first APS channel. Each combined distribution was regridded onto a common set of diameters. Finally, the regridded distributions were cleaned to eliminate values at the larger sizes from the APS where \"phantom\" counts resulted in a spurious coarse mode in the surface and volume distributions.\n\nAll datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.\n\nAdditional datasets may be included for a give project that include:\n - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors\n - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations\n\ncdm_data_type = Trajectory\nVARIABLES:\ntime (Datetime UTC, seconds since 1970-01-01T00:00:00Z)\n... (16 more variables)\n	https://data.pmel.noaa.gov/pmel/erddap/metadata/fgdc/xml/ACG_WACS-2_Knorr_aerosol_sizedist_fgdc.xml	https://data.pmel.noaa.gov/pmel/erddap/metadata/iso19115/xml/ACG_WACS-2_Knorr_aerosol_sizedist_iso19115.xml	https://data.pmel.noaa.gov/pmel/erddap/info/ACG_WACS-2_Knorr_aerosol_sizedist/index.htmlTable	https://www.pmel.noaa.gov/acg/data/index.html	https://data.pmel.noaa.gov/pmel/erddap/rss/ACG_WACS-2_Knorr_aerosol_sizedist.rss	https://data.pmel.noaa.gov/pmel/erddap/subscriptions/add.html?datasetID=ACG_WACS-2_Knorr_aerosol_sizedist&showErrors=false&email=	NOAA	ACG_WACS-2_Knorr_aerosol_sizedist

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