PMEL Atmospheric Chemistry NAAMES-2 Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-2 Aerosol Main Data - 1 min data. The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
... (22 more variables)


PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution (APS) data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (13 more variables)


PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry NAAMES-2 Aerosol Size Distribution data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (16 more variables)


PMEL Atmospheric Chemistry NAAMES-2 CCN data

Summary:
The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ccn_ss (Supersaturation of CCN measurement, percent)
ccn (Cloud Condensation Nuclei Concentration at ccn_ss, cm-3)
ccn_cn_ratio (Ratio of CCN to CN)


PMEL Atmospheric Chemistry NAAMES-2 Radon data

Summary:
The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
radon (mBq m-3)


PMEL Atmospheric Chemistry NAAMES-3 Aerosol Chemistry data

Summary:
The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
... (13 more variables)


PMEL Atmospheric Chemistry NAAMES-3 Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-3 Aerosol Main Data - 1 min data. The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
... (22 more variables)


PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution (APS) data


PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry NAAMES-3 Aerosol Size Distribution data


PMEL Atmospheric Chemistry NAAMES-3 CCN data


PMEL Atmospheric Chemistry NAAMES-3 Radon data


PMEL Atmospheric Chemistry NAAMES-4 Aerosol Chemistry data


PMEL Atmospheric Chemistry NAAMES-4 Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-4 Aerosol Main Data - 1 min data. The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is an interdisciplinary investigation resolving key processes controlling marine ecosystems and aerosols that are essential to our understanding of Earth system function and future change.

NAAMES is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate. Observations obtained during four, targeted ship and aircraft measurement campaigns, combined with the continuous satellite and in situ ocean sensor records, will enable improved predictive capabilities of Earth system processes and will inform ocean management and assessment of ecosystem change.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
... (22 more variables)


PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution (APS) data


PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry NAAMES-4 Aerosol Size Distribution data


PMEL Atmospheric Chemistry NAAMES-4 CCN data


PMEL Atmospheric Chemistry NAAMES-4 Radon data


PMEL Atmospheric Chemistry NAURU99 30 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAURU - ARM, Atmospheric Radiation Measurement 30 minute data

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
COG_3070 (Course Over Ground, degrees_T)
SOG_3080 (Speed Over Ground, knots)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY (%), percent)
BP_915 (BAROMETRIC PRESSURE (MB), mbar)
Qs_133 (SHORTWAVE RADIATION, W m-2)
RWS_405 (Wind Speed (rel. to ship), m s-1)
RWD_414 (Wind Dir. (rel. to bow), degrees)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
WU_430 (Zonal Wind, m s-1)
WV_431 (Meridional Wind, m s-1)
Rr_962 (Rain Rate, mm/hr)
CN_1853 (Total Particles Dp>13nm, cm-3)
CN_1851 (Total Particles Dp>12nm, cm-3)
UFCN_1852 (Total Particles Dp>3nm, cm-3)
AAb_1873 (Aerosol Absorbance, Mm-1)
ASB_1861 (Aerosol Scat Blue, Mm-1)
ASG_1862 (Aerosol Scat Green, Mm-1)
... (14 more variables)


PMEL Atmospheric Chemistry NAURU99 irregular data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAURU - ARM, Atmospheric Radiation Measurement

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
TIM_627 (Julian Days)
Chl_933 (Chlorophyll, ug/L)


PMEL Atmospheric Chemistry NEAQS-2002 Aerosol Chemistry data

Summary:
The New England Air Quality Study, NEAQS 2002 was conducted to assess the concentrations, transport and transformation of gases and aerosols in the marine boundary layer off the northeast coast of the United States.  The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 12 through August 10, 2002.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Oxalate_sub1 (Particulate Oxalate Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Oxalate_super1 (Particulate Oxalate Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Na_sub1 (Particulate Na Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Na_super1 (Particulate Na Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NH4_sub1 (Particulate NH4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
... (23 more variables)


PMEL Atmospheric Chemistry NEAQS-2002 Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NEAQS-2002 Aerosol Main Data - 1 min data. The New England Air Quality Study, NEAQS 2002 was conducted to assess the concentrations, transport and transformation of gases and aerosols in the marine boundary layer off the northeast coast of the United States.  The PMEL Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 12 through August 10, 2002.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
relative_wind_speed (Wind Speed Relative to Ship, m s-1)
relative_wind_direction (Wind Direction Relative to Ship, degree)
cn (Particle number concentration, cm-3)
ufcn (Ultrafine particle number concentration, cm-3)
sea_surface_temperature (degree_C)
salinity (Sea Surface Salinity, PSU)
ozone (Ozone Mixing Ratio, ppb)
... (20 more variables)


PMEL Atmospheric Chemistry NEAQS-2002 AOD(4080) data

Summary:
The New England Air Quality Study, NEAQS 2002 was conducted to assess the concentrations, transport and transformation of gases and aerosols in the marine boundary layer off the northeast coast of the United States.  The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 12 through August 10, 2002.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
aod_440 (Aerosol Optical Depth at 440nm)
aod_500 (Aerosol Optical Depth at 500nm)
aod_675 (Aerosol Optical Depth at 675nm)
aod_870 (Aerosol Optical Depth at 870nm)
air_mass (Integrated Air Density Along Solar Ray Path, atm)


PMEL Atmospheric Chemistry NEAQS-2002 Radon data

Summary:
The New England Air Quality Study, NEAQS 2002 was conducted to assess the concentrations, transport and transformation of gases and aerosols in the marine boundary layer off the northeast coast of the United States.  The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 12 through August 10, 2002.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)


PMEL Atmospheric Chemistry NEAQS-2004 Aerosol Chemistry data

Summary:
The second New England Air Quality Study (NEAQS 2004) took place as part of the multiplatform International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) activity during July and August 2004.  NEAQS 2004 focused on emissions and meteorological and chemical processes that impact air quality and climate forcing in the New England region.

The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 5 through August 12, 2004.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Oxalate_sub1 (Particulate Oxalate Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Oxalate_super1 (Particulate Oxalate Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
... (26 more variables)


PMEL Atmospheric Chemistry NEAQS-2004 Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NEAQS-2004 Aerosol Main Data - 1 min data. The second New England Air Quality Study (NEAQS 2004) took place as part of the multiplatform International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) activity during July and August 2004.  NEAQS 2004 focused on emissions and meteorological and chemical processes that impact air quality and climate forcing in the New England region.

The PMEL Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 5 through August 12, 2004.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
wind_v (north component of the wind, m s-1)
cn (Particle number concentration, cm-3)
ufcn (Ultrafine particle number concentration, cm-3)
sea_surface_temperature (degree_C)
salinity (Sea Surface Salinity, PSU)
... (14 more variables)


PMEL Atmospheric Chemistry NEAQS-2004 AOD(3803) data

Summary:
The second New England Air Quality Study (NEAQS 2004) took place as part of the multiplatform International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) activity during July and August 2004.  NEAQS 2004 focused on emissions and meteorological and chemical processes that impact air quality and climate forcing in the New England region.

The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 5 through August 12, 2004.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
aod_440 (Aerosol Optical Depth at 440nm)
aod_500 (Aerosol Optical Depth at 500nm)
aod_675 (Aerosol Optical Depth at 675nm)
aod_870 (Aerosol Optical Depth at 870nm)
air_mass (Integrated Air Density Along Solar Ray Path, atm)


PMEL Atmospheric Chemistry NEAQS-2004 AOD(4080) data


PMEL Atmospheric Chemistry NEAQS-2004 AOD(5355) data


PMEL Atmospheric Chemistry NEAQS-2004 DMS data

Summary:
The second New England Air Quality Study (NEAQS 2004) took place as part of the multiplatform International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) activity during July and August 2004.  NEAQS 2004 focused on emissions and meteorological and chemical processes that impact air quality and climate forcing in the New England region.

The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 5 through August 12, 2004.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
dms_seawater (Seawater DMS concentration, nmol L-1)


PMEL Atmospheric Chemistry NEAQS-2004 Radon data

Summary:
The second New England Air Quality Study (NEAQS 2004) took place as part of the multiplatform International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) activity during July and August 2004.  NEAQS 2004 focused on emissions and meteorological and chemical processes that impact air quality and climate forcing in the New England region.

The Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown off the coast of New England from July 5 through August 12, 2004.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
radon (mBq m-3)


PMEL Atmospheric Chemistry RITS93 Experiment 30 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Radiatively Important Trace Species - 1993 Pacific Ocean 30 minute data

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
COG_3070 (Course Over Ground, degrees_T)
SOG_3080 (Speed Over Ground, knots)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY (%), percent)
ASB_1861 (Aerosol Scat Blue, Mm-1)
ASG_1862 (Aerosol Scat Green, Mm-1)
ASR_1863 (Aerosol Scat Red, Mm-1)
CN_1851 (Total Particles Dp>12nm, cm-3)
UFCN_1852 (Total Particles Dp>3nm, cm-3)
BP_915 (BAROMETRIC PRESSURE (MB), mbar)
RWS_405 (Wind Speed (rel. to ship), m s-1)
RWD_414 (Wind Dir. (rel. to bow), degrees)
WU_430 (Zonal Wind, m s-1)
WV_431 (Meridional Wind, m s-1)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
Qs_133 (SHORTWAVE RADIATION, W m-2)
O3_1807 (Ozone, ppb)
T_25 (SST (C), C)
S_41 (SALINITY (PSU), PSU)
Chl_933 (Chlorophyll, ug/L)
NO3w_183 (Nitrate in Water, umol/L)


PMEL Atmospheric Chemistry RITS93 Experiment 60 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Radiatively Important Trace Species - 1993 Pacific Ocean 60 minute data

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
CH4a_1801 (CH4air, ppb)
pC4a_1811 (pCH4air, micro-atm)
CH4w_1802 (CH4water, nmol/L)
pC4w_1812 (micro-atm)
COa_1804 (COair, ppb)
pCOa_1814 (pCOair, micro-atm)
COw_1805 (COwater, nmol/L)
pCOw_1815 (pCOwater, micro-atm)
DMSw_1809 (DMSwater, nmol/L)
DMSa_1808 (DMSair, ppt)


PMEL Atmospheric Chemistry RITS94 Experiment 30 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Radiatively Important Trace Species - 1994  Pacific Ocean 30 minute data

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
COG_3070 (Course Over Ground, degrees_T)
SOG_3080 (Speed Over Ground, knots)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY (%), percent)
ASB_1861 (Aerosol Scat Blue, Mm-1)
ASG_1862 (Aerosol Scat Green, Mm-1)
ASR_1863 (Aerosol Scat Red, Mm-1)
CN_1851 (Total Particles Dp>12nm, cm-3)
UFCN_1852 (Total Particles Dp>3nm, cm-3)
BP_915 (BAROMETRIC PRESSURE (MB), mbar)
RWS_405 (Wind Speed (rel. to ship), m s-1)
RWD_414 (Wind Dir. (rel. to bow), degrees)
WU_430 (Zonal Wind, m s-1)
WV_431 (Meridional Wind, m s-1)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
Qs_133 (SHORTWAVE RADIATION, W m-2)
O3_1807 (Ozone, ppb)
T_25 (SST (C), C)
... (4 more variables)


PMEL Atmospheric Chemistry RITS94 Experiment 60 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Radiatively Important Trace Species - 1994  Pacific Ocean 60 minute data

cdm_data_type = Trajectory
VARIABLES:
traj
id (trajectory id)
time (seconds since 1970-01-01T00:00:00Z)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
DUR_628 (Sample Duration, min)
CH4a_1801 (CH4air, ppb)
pC4a_1811 (pCH4air, micro-atm)
CH4w_1802 (CH4water, nmol/L)
pC4w_1812 (micro-atm)
COa_1804 (COair, ppb)
pCOa_1814 (pCOair, micro-atm)
COw_1805 (COwater, nmol/L)
pCOw_1815 (pCOwater, micro-atm)
DMSw_1809 (DMSwater, nmol/L)
DMSa_1808 (DMSair, ppt)


PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Chemistry data

Summary:
From July 27 to September 11, 2006 the Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Oxalate_sub1 (Particulate Oxalate Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Oxalate_super1 (Particulate Oxalate Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Na_sub1 (Particulate Na Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Na_super1 (Particulate Na Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NH4_sub1 (Particulate NH4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NH4_super1 (Particulate NH4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
... (21 more variables)


PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry TexAQS-GoMACCS Aerosol Main Data - 1 min data. From July 27 to September 11, 2006 the PMEL Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
wind_v (north component of the wind, m s-1)
relative_wind_speed (Wind Speed Relative to Ship, m s-1)
relative_wind_direction (Wind Direction Relative to Ship, degree)
cn (Particle number concentration, cm-3)
ufcn (Ultrafine particle number concentration, cm-3)
sea_surface_temperature (degree_C)
... (34 more variables)


PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution (APS) data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (16 more variables)


PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry TexAQS-GoMACCS Aerosol Size Distribution data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (25 more variables)


PMEL Atmospheric Chemistry TexAQS-GoMACCS AOD(3803) data

Summary:
From July 27 to September 11, 2006 the Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
aod_440 (Aerosol Optical Depth at 440nm)
aod_500 (Aerosol Optical Depth at 500nm)
aod_675 (Aerosol Optical Depth at 675nm)
aod_870 (Aerosol Optical Depth at 870nm)
air_mass (Integrated Air Density Along Solar Ray Path, atm)


PMEL Atmospheric Chemistry TexAQS-GoMACCS AOD(4080) data


PMEL Atmospheric Chemistry TexAQS-GoMACCS AOD(5355) data


PMEL Atmospheric Chemistry TexAQS-GoMACCS CCN data

Summary:
From July 27 to September 11, 2006 the Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ccn_ss (Supersaturation of CCN measurement, percent)
ccn (Cloud Condensation Nuclei Concentration at ccn_ss, cm-3)


PMEL Atmospheric Chemistry TexAQS-GoMACCS DMS data

Summary:
From July 27 to September 11, 2006 the Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
dms_seawater (Seawater DMS concentration, nmol L-1)


PMEL Atmospheric Chemistry TexAQS-GoMACCS Radon data

Summary:
From July 27 to September 11, 2006 the Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Group made Aerosol chemical, physical, and optical measurements aboard the NOAA R/V Ronald H. Brown during the Texas Air Quality Study (TexAQS) and the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS).

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
radon (mBq m-3)


PMEL Atmospheric Chemistry Tillamook2022 UAS ClearSky Data (1s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
trajectory_id
CONCN
ABSRA
ABSRB
ABSGA
ABSGB
ABSBA
ABSBB
CHMPS
AT
RH
SMPFL
SMPFP
SATFL
SATFP
ABSFL
ABSFP
CHMFL
CHMFP
POPS_FL
OPCFP
OPTCT
OPTCP
CONDT
CONDP
... (41 more variables)


PMEL Atmospheric Chemistry Tillamook2022 UAS ClearSky Data (30s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
trajectory_id
CONCN
ABSRA
ABSRB
ABSGA
ABSGB
ABSBA
ABSBB
CHMPS
AT
RH
SMPFL
SMPFP
SATFL
SATFP
ABSFL
ABSFP
CHMFL
CHMFP
POPS_FL
OPCFP
OPTCT
OPTCP
CONDT
CONDP
... (44 more variables)


PMEL Atmospheric Chemistry Tillamook2022 UAS ClearSky POPS Distribution Data (30s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
pops_diameter
trajectory_id
latitude (degrees_north)
longitude (degrees_east)
altitude (m)
pops_bin_counts
pops_dp_um_2d
pops_dN (Pops D N)
pops_dNdlogDp (Pops D Ndlog Dp)
pops_dSdlogDp (Pops D Sdlog Dp)
pops_dS (Pops D S)
pops_dVdlogDp (Pops D Vdlog Dp)
pops_dV (Pops D V)


PMEL Atmospheric Chemistry Tillamook2022 UAS CloudySky CDP Distribution Data (1s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
cdp_diameter
trajectory_id
latitude (degrees_north)
longitude (degrees_east)
altitude (m)
cdp_bin_counts
cdp_dp_um_2d
cdp_dN (CDP D N)
cdp_dNdlogDp (Cdp D Ndlog Dp)
cdp_dSdlogDp (Cdp D Sdlog Dp)
cdp_dS (CDP D S)
cdp_dVdlogDp (Cdp D Vdlog Dp)
cdp_dV (CDP D V)


PMEL Atmospheric Chemistry Tillamook2022 UAS CloudySky CDP Distribution Data (30s)


PMEL Atmospheric Chemistry Tillamook2022 UAS CloudySky Data (1s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
trajectory_id
latitude (degrees_north)
longitude (degrees_east)
altitude (m)
ground_speed
heading
pressure_altitude
true_air_speed
roll
pitch
yaw
heading_mag
height_agl
altitude_ft (Altitude)
pressure_altitude_ft
height_agl_ft
cdp_intN (Cdp Int N)
cdp_laser_current
cdp_wingboard_T
cdp_laser_T
cdp_control_board_T
cdp_intS (Cdp Int S)
cdp_intV (Cdp Int V)
cdp_lwc
fast_ambient_T
... (6 more variables)


PMEL Atmospheric Chemistry Tillamook2022 UAS CloudySky Data (30s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
trajectory_id
latitude (degrees_north)
longitude (degrees_east)
altitude (m)
ground_speed
heading
pressure_altitude
true_air_speed
roll
pitch
yaw
heading_mag
height_agl
altitude_ft (Altitude)
pressure_altitude_ft
height_agl_ft
cdp_intN (Cdp Int N)
cdp_laser_current
cdp_wingboard_T
cdp_laser_T
cdp_control_board_T
cdp_intS (Cdp Int S)
cdp_intV (Cdp Int V)
cdp_lwc
fast_ambient_T
... (22 more variables)


PMEL Atmospheric Chemistry Tillamook2022 UAS CloudySky mSEMS Distribution Data (30s)

Summary:
UAS Data from Tillamook2022. NOAA/Pacific Marine Environmental Laboratory (PMEL) data from a local source.

cdm_data_type = Trajectory
VARIABLES:
time (seconds since 1970-01-01T00:00:00Z)
msems_diameter
trajectory_id
latitude (degrees_north)
longitude (degrees_east)
altitude (m)
msems_bin_counts
msems_dp_um_2d
msems_dNdlogDp (Msems D Ndlog Dp)
msems_dN (Msems D N)
msems_dSdlogDp (Msems D Sdlog Dp)
msems_dS (Msems D S)
msems_dVdlogDp (Msems D Vdlog Dp)
msems_dV (Msems D V)


PMEL Atmospheric Chemistry UBWO2012 1 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2012 1 minute data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY, percent)
BP_915 (BAROMETRIC PRESSURE, mbar)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
WU_430 (Zonal Wind, m s-1)
WV_431 (Meridional Wind, m s-1)
SASB_1867 (Submicron AeroScat Blue, Mm-1)
SASG_1868 (Submicron AeroScat Green, Mm-1)
SASR_1869 (Submicron AeroScat Red, Mm-1)
ASSRH_1876 (Aerosol Scat Nephelometer RH, percent)
AScAE1_2003 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 1, dimensionless)
AScAE2_2004 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 2, dimensionless)
AScAE3_2005 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 3, dimensionless)
ASSA1_2006 (Aerosol Single Albedo for defined Aerosol at wavelength 1, dimensionless)
ASSA2_2007 (Aerosol Single Albedo for defined Aerosol at wavelength 2, dimensionless)
ASSA3_2008 (Aerosol Single Albedo for defined Aerosol at wavelength 3, dimensionless)
AAbAE1_2000 (Aerosol light Absorbtion Angstrom Exponent for defined Aerosol at wavelength 1, dimensionless)
... (18 more variables)


PMEL Atmospheric Chemistry UBWO2012 irregular data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2012 irregular data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
Na_1920 (Soluble Submicron Aerosol Sodium, ug/m^3)
Na_1921 (Soluble Supermicron Aerosol Sodium, ug/m^3)
NH4_1923 (Soluble Submicron Aerosol Ammonium, ug/m^3)
NH4_1924 (Soluble Supermicron Aerosol Ammonium, ug/m^3)
K_1926 (Soluble Submicron Aerosol Potassium, ug/m^3)
Mg_1929 (Soluble Submicron Aerosol Magnesium, ug/m^3)
Ca_1932 (Soluble Submicron Aerosol Calcium, ug/m^3)
Ca_1933 (Soluble Supermicron Aerosol Calcium, ug/m^3)
Cl_1944 (Soluble Submicron Aerosol Chloride, ug/m^3)
Cl_1945 (Soluble Supermicron Aerosol Chloride, ug/m^3)
NO3_1947 (Soluble Submicron Aerosol Nitrate, ug/m^3)
SO4_1950 (Soluble Submicron Aerosol Sulfate, ug/m^3)
SO4_1951 (Soluble Supermicron Aerosol Sulfate, ug/m^3)
Oxlate_1986 (Soluble Submicron Aerosol Oxalate, ug/m^3)
OC_1959 (Submicron Aerosol Organic Carbon, ug/m^3)
BC_1962 (Submicron Aerosol Black Carbon, ug/m^3)
mass_1965 (Submicron Aerosol mass, ug/m^3)
mass_1966 (Supermicron Aerosol mass, ug/m^3)


PMEL Atmospheric Chemistry UBWO2013 1 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2013 1 minute data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY, percent)
BP_915 (BAROMETRIC PRESSURE, mbar)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
SASB_1867 (Submicron AeroScat Blue, Mm-1)
SASG_1868 (Submicron AeroScat Green, Mm-1)
SASR_1869 (Submicron AeroScat Red, Mm-1)
ASSRH_1876 (Aerosol Scat Nephelometer RH, percent)
AScAE1_2003 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 1, dimensionless)
AScAE2_2004 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 2, dimensionless)
AScAE3_2005 (Aerosol light Scattering Angstrom Exponent for defined Aerosol at wavelength 3, dimensionless)
ASSA1_2006 (Aerosol Single Albedo for defined Aerosol at wavelength 1, dimensionless)
ASSA2_2007 (Aerosol Single Albedo for defined Aerosol at wavelength 2, dimensionless)
ASSA3_2008 (Aerosol Single Albedo for defined Aerosol at wavelength 3, dimensionless)
AAbAE1_2000 (Aerosol light Absorbtion Angstrom Exponent for defined Aerosol at wavelength 1, dimensionless)
AAbAE2_2001 (Aerosol light Absorbtion Angstrom Exponent for defined Aerosol at wavelength 2, dimensionless)
AAbAE3_2002 (Aerosol light Absorbtion Angstrom Exponent for defined Aerosol at wavelength 3, dimensionless)
... (4 more variables)


PMEL Atmospheric Chemistry UBWO2013 30 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2013 30 minute data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
TIM_627 (Julian Days)
IgT_6300 (Seconds since 01-Jan-1904, s)
SO4_1950 (Soluble Submicron Aerosol Sulfate, ug/m^3)
NH4_1923 (Soluble Submicron Aerosol Ammonium, ug/m^3)
NO3_1947 (Soluble Submicron Aerosol Nitrate, ug/m^3)


PMEL Atmospheric Chemistry UBWO2013 irregular 1 data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2013 irregular 1 data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
Na_1920 (Soluble Submicron Aerosol Sodium, ug/m^3)
Na_1921 (Soluble Supermicron Aerosol Sodium, ug/m^3)
NH4_1923 (Soluble Submicron Aerosol Ammonium, ug/m^3)
NH4_1924 (Soluble Supermicron Aerosol Ammonium, ug/m^3)
K_1926 (Soluble Submicron Aerosol Potassium, ug/m^3)
Mg_1929 (Soluble Submicron Aerosol Magnesium, ug/m^3)
Ca_1932 (Soluble Submicron Aerosol Calcium, ug/m^3)
Ca_1933 (Soluble Supermicron Aerosol Calcium, ug/m^3)
Cl_1944 (Soluble Submicron Aerosol Chloride, ug/m^3)
Cl_1945 (Soluble Supermicron Aerosol Chloride, ug/m^3)
NO3_1947 (Soluble Submicron Aerosol Nitrate, ug/m^3)
NO3_1948 (Soluble Supermicron Aerosol Nitrate, ug/m^3)
SO4_1950 (Soluble Submicron Aerosol Sulfate, ug/m^3)
SO4_1951 (Soluble Supermicron Aerosol Sulfate, ug/m^3)
Oxlate_1986 (Soluble Submicron Aerosol Oxalate, ug/m^3)
OC_1959 (Submicron Aerosol Organic Carbon, ug/m^3)
BC_1962 (Submicron Aerosol Black Carbon, ug/m^3)


PMEL Atmospheric Chemistry UBWO2013 irregular 2 data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2013 irregular 2 data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
SN_100_sub0 (SCAN NUMBER sub-0 micron)
Na_1922 (Soluble Sub10micron Aerosol Sodium, ug/m^3)
NH4_1925 (Soluble Sub10micron Aerosol Ammonium, ug/m^3)
K_1928 (Soluble Sub10micron Aerosol Potassium, ug/m^3)
Mg_1931 (Soluble Sub10micron Aerosol Magnesium, ug/m^3)
Ca_1934 (Soluble Sub10micron Aerosol Calcium, ug/m^3)
Cl_1946 (Soluble Sub10micron Aerosol Chloride, ug/m^3)
NO2_184 (NITRITE (micromoles/l), uM/l)
Br_1991 (Soluble Sub10micron Aerosol Bromide, ug/m^3)
NO3_182 (NITRATE (micromoles/l), uM/l)
SO4_1952 (Soluble Sub10micron Aerosol Sulfate, ug/m^3)
Oxlate_1988 (Soluble Sub10micron Aerosol Oxalate, ug/m^3)
SN_100_sub0_UBWOS2013_SNOW_DOC_DN_v0 (SCAN NUMBER sub-0 micron UBWOS2013_SNOW_DOC-DN_v0)
TCO2_1751 (TOTAL CO2 (micromoles/kg), uM/kg)
NN_185 (Nitrate + Nitrite, umoles/l)


PMEL Atmospheric Chemistry UBWO2014 1 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2014 1 minute data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
TIM_627 (Julian Days)
IgT_6300 (Seconds since 01-Jan-1904, s)
AT_3051 (Air Temperature, degree_C)
RH_910 (RELATIVE HUMIDITY, percent)
BP_915 (BAROMETRIC PRESSURE, mbar)
WS_404 (Wind Speed, m s-1)
WD_412 (Wind Direction (from), degrees_T)
WU_430 (Zonal Wind, m s-1)
WV_431 (Meridional Wind, m s-1)
Rr_962 (Rain Rate, mm/hr)


PMEL Atmospheric Chemistry UBWO2014 5 minute data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2014 5 minute data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
TIM_627 (Julian Days)
IgT_6300 (Seconds since 01-Jan-1904, s)
SO4_1992 (Non-Refractory Aerosol Sulfate, ug/m^3)
NH4_1995 (Non-Refractory Aerosol Ammonium, ug/m^3)
NO3_1994 (Non-Refractory Aerosol Nitrate, ug/m^3)
POM_1996 (Non-Refactory Particulate Organic Matter, ug/m^3)


PMEL Atmospheric Chemistry UBWO2014 irregular 1 data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2014 irregular 1 data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
Cl_1944 (Soluble Submicron Aerosol Chloride, ug/m^3)
Cl_1945 (Soluble Supermicron Aerosol Chloride, ug/m^3)
Br_1989 (Soluble Submicron Aerosol Bromide, ug/m^3)
Br_1990 (Soluble Supermicron Aerosol Bromide, ug/m^3)
NO2_184 (NITRITE (micromoles/l), uM/l)
NO2_154 (NITRITE (MG AT/L), mg at/l)
NO3_1947 (Soluble Submicron Aerosol Nitrate, ug/m^3)
NO3_1948 (Soluble Supermicron Aerosol Nitrate, ug/m^3)
SO4_1950 (Soluble Submicron Aerosol Sulfate, ug/m^3)
SO4_1951 (Soluble Supermicron Aerosol Sulfate, ug/m^3)
Oxlate_1986 (Soluble Submicron Aerosol Oxalate, ug/m^3)
Oxlate_1987 (Soluble Supermicron Aerosol Oxalate, ug/m^3)
Na_1920 (Soluble Submicron Aerosol Sodium, ug/m^3)
Na_1921 (Soluble Supermicron Aerosol Sodium, ug/m^3)
NH4_1923 (Soluble Submicron Aerosol Ammonium, ug/m^3)
NH4_1924 (Soluble Supermicron Aerosol Ammonium, ug/m^3)
K_1926 (Soluble Submicron Aerosol Potassium, ug/m^3)
K_1927 (Soluble Supermicron Aerosol Potassium, ug/m^3)
... (7 more variables)


PMEL Atmospheric Chemistry UBWO2014 irregular 2 data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Uintah Basin Winter Ozone Study 2014 irregular 2 data

cdm_data_type = TimeSeries
VARIABLES:
tseries
id (timeseries id)
longitude (degrees_east)
lon360 (longitude 360, degrees_east)
latitude (degrees_north)
time (seconds since 1970-01-01T00:00:00Z)
DUR_628 (Sample Duration, min)
IgT_6300 (Seconds since 01-Jan-1904, s)
Na_1922 (Soluble Sub10micron Aerosol Sodium, ug/m^3)
NH4_1925 (Soluble Sub10micron Aerosol Ammonium, ug/m^3)
K_1928 (Soluble Sub10micron Aerosol Potassium, ug/m^3)
Mg_1931 (Soluble Sub10micron Aerosol Magnesium, ug/m^3)
Ca_1934 (Soluble Sub10micron Aerosol Calcium, ug/m^3)
Cl_1946 (Soluble Sub10micron Aerosol Chloride, ug/m^3)
NO2_184 (NITRITE (micromoles/l), uM/l)
Br_1991 (Soluble Sub10micron Aerosol Bromide, ug/m^3)
NO3_182 (NITRATE (micromoles/l), uM/l)
SO4_1952 (Soluble Sub10micron Aerosol Sulfate, ug/m^3)
Oxlate_1988 (Soluble Sub10micron Aerosol Oxalate, ug/m^3)
TCO2_1751 (TOTAL CO2 (micromoles/kg), uM/kg)
POM_1996_sub0 (Non-Refactory Particulate Organic Matter sub-0 micron, ug/m^3)
NN_185_sub0 (Nitrate + Nitrite sub-0 micron, umoles/l)
TCARBN_4269 (Total Carbon, umol/kg)
POM_1996_sub0_UBWOS2014_SNOW_TOC_POC_TN_v1 (Non-Refactory Particulate Organic Matter sub-0 micron UBWOS2014_SNOW_TOC-POC-TN_v1, ug/m^3)
NN_185_sub0_UBWOS2014_SNOW_TOC_POC_TN_v1 (Nitrate + Nitrite sub-0 micron UBWOS2014_SNOW_TOC-POC-TN_v1, umoles/l)


PMEL Atmospheric Chemistry VOCALS Aerosol Chemistry data

Summary:
The VAMOS Ocean-Cloud-Atmosphere-Land Study - Regional Experiment (VOCALS-REx) is an international field experiment designed to better understand physical and chemical processes central to the climate system of the Southeast Pacific (SEP) region. The climate of the SEP region is a tightly coupled system involving poorly understood interactions between the ocean, the atmosphere, and the land. VOCALS-REx will focus on interactions between clouds, aerosols, marine boundary layer (MBL) processes, upper ocean dynamics and thermodynamics, coastal currents and upwelling, large-scale subsidence, and regional diurnal circulations, to the west of the Andes mountain range. The field experiment is ultimately driven by a need for improved model simulations of the coupled climate system in both the SEP and over the wider tropics and subtropics.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Oxalate_sub1 (Particulate Oxalate Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
... (13 more variables)


PMEL Atmospheric Chemistry VOCALS Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry VOCALS Aerosol Main Data - 1 min data. The VAMOS Ocean-Cloud-Atmosphere-Land Study - Regional Experiment (VOCALS-REx) is an international field experiment designed to better understand physical and chemical processes central to the climate system of the Southeast Pacific (SEP) region. The climate of the SEP region is a tightly coupled system involving poorly understood interactions between the ocean, the atmosphere, and the land. VOCALS-REx will focus on interactions between clouds, aerosols, marine boundary layer (MBL) processes, upper ocean dynamics and thermodynamics, coastal currents and upwelling, large-scale subsidence, and regional diurnal circulations, to the west of the Andes mountain range. The field experiment is ultimately driven by a need for improved model simulations of the coupled climate system in both the SEP and over the wider tropics and subtropics.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
wind_v (north component of the wind, m s-1)
relative_wind_speed (Wind Speed Relative to Ship, m s-1)
... (38 more variables)


PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution (APS) data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (16 more variables)


PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry VOCALS Aerosol Size Distribution data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (19 more variables)


PMEL Atmospheric Chemistry VOCALS AOD(4080) data

Summary:
The VAMOS Ocean-Cloud-Atmosphere-Land Study - Regional Experiment (VOCALS-REx) is an international field experiment designed to better understand physical and chemical processes central to the climate system of the Southeast Pacific (SEP) region. The climate of the SEP region is a tightly coupled system involving poorly understood interactions between the ocean, the atmosphere, and the land. VOCALS-REx will focus on interactions between clouds, aerosols, marine boundary layer (MBL) processes, upper ocean dynamics and thermodynamics, coastal currents and upwelling, large-scale subsidence, and regional diurnal circulations, to the west of the Andes mountain range. The field experiment is ultimately driven by a need for improved model simulations of the coupled climate system in both the SEP and over the wider tropics and subtropics.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
aod_440 (Aerosol Optical Depth at 440nm)
aod_500 (Aerosol Optical Depth at 500nm)
aod_675 (Aerosol Optical Depth at 675nm)
aod_870 (Aerosol Optical Depth at 870nm)
air_mass (Integrated Air Density Along Solar Ray Path, atm)


PMEL Atmospheric Chemistry VOCALS DMS data

Summary:
The VAMOS Ocean-Cloud-Atmosphere-Land Study - Regional Experiment (VOCALS-REx) is an international field experiment designed to better understand physical and chemical processes central to the climate system of the Southeast Pacific (SEP) region. The climate of the SEP region is a tightly coupled system involving poorly understood interactions between the ocean, the atmosphere, and the land. VOCALS-REx will focus on interactions between clouds, aerosols, marine boundary layer (MBL) processes, upper ocean dynamics and thermodynamics, coastal currents and upwelling, large-scale subsidence, and regional diurnal circulations, to the west of the Andes mountain range. The field experiment is ultimately driven by a need for improved model simulations of the coupled climate system in both the SEP and over the wider tropics and subtropics.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
dms_seawater (Seawater DMS concentration, nmol L-1)


PMEL Atmospheric Chemistry VOCALS Radon data

Summary:
The VAMOS Ocean-Cloud-Atmosphere-Land Study - Regional Experiment (VOCALS-REx) is an international field experiment designed to better understand physical and chemical processes central to the climate system of the Southeast Pacific (SEP) region. The climate of the SEP region is a tightly coupled system involving poorly understood interactions between the ocean, the atmosphere, and the land. VOCALS-REx will focus on interactions between clouds, aerosols, marine boundary layer (MBL) processes, upper ocean dynamics and thermodynamics, coastal currents and upwelling, large-scale subsidence, and regional diurnal circulations, to the west of the Andes mountain range. The field experiment is ultimately driven by a need for improved model simulations of the coupled climate system in both the SEP and over the wider tropics and subtropics.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
radon (mBq m-3)


PMEL Atmospheric Chemistry WACS Aerosol Chemistry data

Summary:
WACS 2014 Objectives

    Multiple deployments and recoveries of
an in situ sea spray particle generator, Sea Sweep, for characterization of properties and
cloud-nucleating ability of nascent ocean-derived aerosol. In addition, atmospheric
particles and gases and surface seawater will be sampled to assess the impact of ocean
emissions on atmospheric composition.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
end_time (endpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
IC_MSA_sub1 (Particulate MSA Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_MSA_super1 (Particulate MSA Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Cl_sub1 (Particulate Cl Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Cl_super1 (Particulate Cl Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Br_sub1 (Particulate Br Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Br_super1 (Particulate Br Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_NO3_sub1 (Particulate NO3 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_NO3_super1 (Particulate NO3 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_SO4_sub1 (Particulate SO4 Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_SO4_super1 (Particulate SO4 Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Oxalate_sub1 (Particulate Oxalate Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
IC_Oxalate_super1 (Particulate Oxalate Concentration for 1.1 um < Dp < 10 um, ug m-3, micrograms m-3)
IC_Na_sub1 (Particulate Na Concentration for Dp < 1.1 um, ug m-3, micrograms m-3)
... (14 more variables)


PMEL Atmospheric Chemistry WACS Aerosol Main Data, 1 min data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry WACS Aerosol Main Data - 1 min data. WACS 2014 Objectives

    Multiple deployments and recoveries of
an in situ sea spray particle generator, Sea Sweep, for characterization of properties and
cloud-nucleating ability of nascent ocean-derived aerosol. In addition, atmospheric
particles and gases and surface seawater will be sampled to assess the impact of ocean
emissions on atmospheric composition.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
ship_course (Ship Course over Ground, degree)
ship_heading (degree)
air_temp (Air Temperature, degree_C)
rh (Relative Humidity, percent)
baro_pressure (Barometric Pressure, hPa)
insolation (Shortwave Flux, W m-2)
rain_rate (MM' 'Hour-1)
wind_speed (m s-1)
wind_direction (degree)
wind_u (east component of the wind, m s-1)
wind_v (north component of the wind, m s-1)
relative_wind_speed (Wind Speed Relative to Ship, m s-1)
relative_wind_direction (Wind Direction Relative to Ship, degree)
... (36 more variables)


PMEL Atmospheric Chemistry WACS Aerosol Size Distribution (APS) data

Summary:
Pacific Marine Environmental Laboratory (PMEL) Size Distributions

    Aerosol inlet:
Ambient 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].

The 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.

DMPS (datasets denoted by _aerosol_sizedist_dmps_):
One 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.

APS (datasets denoted by _aerosol_sizedist_aps_):
One 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.

Merged (datasets denoted by _aerosol_sizedist):
These 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.

All datasets include number size distributions (normalized and non-normalized) as well as the higher moments for each: surface area and volume.

Additional datasets may be included for a give project that include:
 - ambient (_ambient_): includes size distributions shifted to ambient RH using gRH factors
 - filter (_filter_): includes size distributions where additional cleaning was performed for periods of unstable CN concentrations

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (13 more variables)


PMEL Atmospheric Chemistry WACS Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry WACS Aerosol Size Distribution data


PMEL Atmospheric Chemistry WACS AOD data

Summary:
WACS 2014 Objectives

    Multiple deployments and recoveries of
an in situ sea spray particle generator, Sea Sweep, for characterization of properties and
cloud-nucleating ability of nascent ocean-derived aerosol. In addition, atmospheric
particles and gases and surface seawater will be sampled to assess the impact of ocean
emissions on atmospheric composition.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
aod_440 (Aerosol Optical Depth at 440nm)
aod_500 (Aerosol Optical Depth at 500nm)
aod_675 (Aerosol Optical Depth at 675nm)
aod_870 (Aerosol Optical Depth at 870nm)
air_mass (Integrated Air Density Along Solar Ray Path, atm)


PMEL Atmospheric Chemistry WACS DMS data

Summary:
WACS 2014 Objectives

    Multiple deployments and recoveries of
an in situ sea spray particle generator, Sea Sweep, for characterization of properties and
cloud-nucleating ability of nascent ocean-derived aerosol. In addition, atmospheric
particles and gases and surface seawater will be sampled to assess the impact of ocean
emissions on atmospheric composition.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
dms_seawater (Seawater DMS concentration, nmol L-1)


PMEL Atmospheric Chemistry WACS Radon data

Summary:
WACS 2014 Objectives

    Multiple deployments and recoveries of
an in situ sea spray particle generator, Sea Sweep, for characterization of properties and
cloud-nucleating ability of nascent ocean-derived aerosol. In addition, atmospheric
particles and gases and surface seawater will be sampled to assess the impact of ocean
emissions on atmospheric composition.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
radon (mBq m-3)


PMEL Atmospheric Chemistry WACS-2 Aerosol Chemistry data

Summary:
Core WACS 2014 Objectives

    1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with
NOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle
generator. Sea Sweep allows for the generation and sampling of nascent
particles without contamination and modification by existing atmospheric particles
and gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be
characterized include chemical composition, size distribution, number concentration,
cloud-nucleating ability, light scattering as a function of relative humidity, and light
absorption.

2. Characterization of surface and column seawater properties. Surface seawater
properties to be measured include fluorescence (chlorophyll-a), particulate organic
carbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,
salinity, bubble surface tension, exopolymer gels, phytoplankton species composition,
and nutrients.

3. Assessment of the impact of surface seawater properties on SSA. The response of
nascent SSA properties (composition, size distribution, cloud-nucleating ability) to
changes in ocean biological regime will be determined.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
mid_time (midpoint Datetime UTC, seconds since 1970-01-01T00:00:00Z)
... (22 more variables)


PMEL Atmospheric Chemistry WACS-2 Aerosol Main Data, 1 min data

Summary:
PMEL Atmospheric Chemistry WACS-2 Aerosol Main Data - 1 min data. Core WACS 2014 Objectives

    1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with
NOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle
generator. Sea Sweep allows for the generation and sampling of nascent
particles without contamination and modification by existing atmospheric particles
and gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be
characterized include chemical composition, size distribution, number concentration,
cloud-nucleating ability, light scattering as a function of relative humidity, and light
absorption.

2. Characterization of surface and column seawater properties. Surface seawater
properties to be measured include fluorescence (chlorophyll-a), particulate organic
carbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,
salinity, bubble surface tension, exopolymer gels, phytoplankton species composition,
and nutrients.

3. Assessment of the impact of surface seawater properties on SSA. The response of
nascent SSA properties (composition, size distribution, cloud-nucleating ability) to
changes in ocean biological regime will be determined.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ship_speed (Ship Speed over Ground, knots)
... (36 more variables)


PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution (APS) data


PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution (DMPS) data


PMEL Atmospheric Chemistry WACS-2 Aerosol Size Distribution data


PMEL Atmospheric Chemistry WACS-2 AOD data

Summary:
Core WACS 2014 Objectives

    1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with
NOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle
generator. Sea Sweep allows for the generation and sampling of nascent
particles without contamination and modification by existing atmospheric particles
and gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be
characterized include chemical composition, size distribution, number concentration,
cloud-nucleating ability, light scattering as a function of relative humidity, and light
absorption.

2. Characterization of surface and column seawater properties. Surface seawater
properties to be measured include fluorescence (chlorophyll-a), particulate organic
carbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,
salinity, bubble surface tension, exopolymer gels, phytoplankton species composition,
and nutrients.

3. Assessment of the impact of surface seawater properties on SSA. The response of
nascent SSA properties (composition, size distribution, cloud-nucleating ability) to
changes in ocean biological regime will be determined.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
aod_380 (Aerosol Optical Depth at 380nm)
... (5 more variables)


PMEL Atmospheric Chemistry WACS-2 CCN data

Summary:
Core WACS 2014 Objectives

    1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with
NOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle
generator. Sea Sweep allows for the generation and sampling of nascent
particles without contamination and modification by existing atmospheric particles
and gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be
characterized include chemical composition, size distribution, number concentration,
cloud-nucleating ability, light scattering as a function of relative humidity, and light
absorption.

2. Characterization of surface and column seawater properties. Surface seawater
properties to be measured include fluorescence (chlorophyll-a), particulate organic
carbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,
salinity, bubble surface tension, exopolymer gels, phytoplankton species composition,
and nutrients.

3. Assessment of the impact of surface seawater properties on SSA. The response of
nascent SSA properties (composition, size distribution, cloud-nucleating ability) to
changes in ocean biological regime will be determined.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
ccn_ss (Supersaturation of CCN measurement, percent)
ccn (Cloud Condensation Nuclei Concentration at ccn_ss, cm-3)
ccn_cn_ratio (Ratio of CCN to CN)


PMEL Atmospheric Chemistry WACS-2 DMS data

Summary:
Core WACS 2014 Objectives

    1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with
NOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle
generator. Sea Sweep allows for the generation and sampling of nascent
particles without contamination and modification by existing atmospheric particles
and gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be
characterized include chemical composition, size distribution, number concentration,
cloud-nucleating ability, light scattering as a function of relative humidity, and light
absorption.

2. Characterization of surface and column seawater properties. Surface seawater
properties to be measured include fluorescence (chlorophyll-a), particulate organic
carbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,
salinity, bubble surface tension, exopolymer gels, phytoplankton species composition,
and nutrients.

3. Assessment of the impact of surface seawater properties on SSA. The response of
nascent SSA properties (composition, size distribution, cloud-nucleating ability) to
changes in ocean biological regime will be determined.

cdm_data_type = Trajectory
VARIABLES:
time (Datetime UTC, seconds since 1970-01-01T00:00:00Z)
trajectory_id
duration (second)
latitude (degrees_north)
longitude (degrees_east)
altitude (height above mean sea level, m)
dms_seawater (Seawater DMS concentration, nmol L-1)