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

ERDDAP > info > ACG_NAAMES-1_Atlantis_main

Grid
DAP
Data
Sub-
set
Table
DAP
Data
Make
A
Graph
W
M
S
Source
Data
Files
Title Sum-
mary
FGDC,
ISO,
Metadata
Back-
ground
Info
RSS E
mail
Institution Dataset ID
   set  data   graph     files  PMEL Atmospheric Chemistry NAAMES-1 Aerosol Main Data, 1 min data    ?   F   I   M   background (external link) RSS Subscribe NOAA ACG_NAAMES-1_Atlantis_main

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Trajectory
attribute NC_GLOBAL cdm_trajectory_variables String trajectory_id
attribute NC_GLOBAL comment String Navigation and Meteorological Measurements

Ship Position (Latitude and Longitude):
In the one minute files the position is treated somewhat differently from all the other data. The position given is the ship's position at the start of the one minute 'averaging' period. All other data are a true average. The PMEL GPS was the primary source. The Ship's GPS was used when there were missing data in the PMEL record.

Ship Speed, Course and Gyro:
The ship's GPS speed in knots (Speed Over Ground) and GPS Course in compass degrees (Course Over Ground) are the one minute averages from the GPS (the PMEL GPS as the primary source, the Ship's GPS was the secondary source). To make the one minute averages the 1-second recorded motion vector was separated into east and north components that were averaged into one minute bins. The one minute components were then combined into the ship Velocity Vector. The GyroCompass in compass degrees is the one minute average heading. The primary source was the PMEL GPS compass (Si-TEX Vector Pro), the ship gyro compass data were used when the primary data were missing. The 1-second data were separated into an east and north component before averaging and then recombined. NOTE: The GPS-Course is the direction the ship is moving. The GyroCompass is the direction the ship's bow is pointing. When the ship is moving at 6 or more knots they generally are the same. Due to water currents, at slow speeds there can be quite a difference between the two. When the ship is stationary, the two are totally unrelated.

Relative Wind:
The primary source for the relative wind data was the PMEL Vaisala WX520 sonic anemometer, located on the aerosol sampling mast. For periods of missing data, the PSD Sonic anemometer on the ship’s foremast was used. The one second relative wind speed and direction data were separated into orthogonal components of "keel" and "beam". These components were averaged into 1 minute averages, and then recombined to relative wind vectors. Wind speed is reported in meters per second and wind direction is in degrees with -90 being wind approaching the ship on the port beam, 0 degrees being wind approaching the ship directly on the bow, and +90 degrees being wind approaching the ship on the starboard beam.

Wind Components/ True Wind Speed/ True Wind Direction:
The primary source for the true wind data was the average of the PMEL Vaisala WX520 and WX536 sonic anemometers, both located on the aerosol sampling mast, 17 m above sea level. For periods of missing data the average of the ship’s two WXT sensors, located above the ship’s navigation bridge, were used. True wind speed and direction were calculated from the relative wind taking into account the ship's motion from the GPS and the ship heading from the GPS compass. The true wind vector is given as wind speed in m/s and wind direction in compass degrees (0 degrees meaning wind arriving from the north). The WindU and WindV are the east and north components of the wind vector in m/s. WindU and WindV are positive for wind going in the east and north directions.

Atmospheric Temperature:
One minute averages in degrees C. The following data sources were used. The PMEL Vaisala WXT536 and the PMEL Vaisala WXT520 sensor (both on the sampling aerosol mast at 17 m above sea level) and the NOAA PSD sensor on the bow foremast also at 17 meters above the sea surface. These 3 sensors generally agreed to better than 0.5 deg C. For this project the average of the two PMEL WXT sensors was used. During periods of missing data in the PMEL record the PSD sensor was used.

Relative humidity:
One minute averages in %. The following data sources were used. The PMEL Vaisala WXT536 and the PMEL Vaisala WXT520 sensor (both on the sampling aerosol mast at 17 m above sea level) and the NOAA PSD sensor on the bow foremast also at 17 meters above the sea surface. These 3 sensors generally agreed within 5% in rh. For this project the average of the two PMEL WXT sensors was used. During periods of missing data in the PMEL record the PSD sensor was used.

Barometric Pressure:
One minute averages in units of mb. There were two sources of raw data, the PMEL WXT sensors (corrected to sea level) and the NOAA PSD sensor (corrected to sea level). For this project the average of the sea level corrected PMEL WXT sensors was used. Missing data were filled in with the PSD sea level corrected pressure.

Insolation:
One minute averages in units of watts per square meter. Total solar radiation was measured with an Epply black and white pyranometer (horizontal surface receiver -180, model 8-48, serial number 12946) and an Epply precision pyranometer (horizontal surface receiver -180, twin hemispheres, model PSP, serial number 133035F3) that were mounted on the top of Areophys van. Both instruments were calibrated by the Epply Laboratory on October 11, 1994. There were times when the sampling mast shaded one or both sensors. There were also times when the ship's mast/bridge shaded the sensors. The shaded data have not been edited out of the 1 minute data record. The data reported here are from the model 8-48, serial number 12946 radiometer and are in watts per square meter and are the average value over the 1 minute sampling period.

Rain Rate (Precipitation):
The rain rate, in mm/hr, was measured by the PMEL-Vaisala WX520 and WX536 Met sensors located near the top of the aerosol sampling mast. The average of the two sensors was used. During periods of high wind speed (above about 15 m/s), sea spray causes drops that will impact the rain sensor and register as rain, thus there are periods where rain is recorded when there is no rain falling. We have no way of editing this out of the data record so the measured rain rate at these higher wind speeds is unreliable.

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.

CN and UFCN:
One of the twenty one 1.6 cm diameter tubes was used to supply ambient air to TSI 3010 (CN_Direct) and TSI 3025A (UFCN_Direct) particle counters. Another one of tubes was used to supply ambient air to a TSI3785 (UFCN_Chem) particle counter. A separate 1/4" line was used to supply air from the top of the mast directly to a TSI 3760 particle counter. The 3760, 3010, 3025 and 3785 measure all particles larger than roughly 12, 12, 3 and 5 nm respectively. The total particle counts from each instrument were recorded each second. The data were filtered to eliminate periods of calibration and instrument malfunction and zero air periods, and periods of obvious ship contamination (based on relative wind and high CN counts). The "best" filtered values were chosen to represent CN>12 (CN) and ultra-fine (UFCN) particle concentrations. The best CN values are primarily from CN_Direct with data from CN_Stack used to fill in periods where the CN_Direct data were not available. Similarly, the UFCN values are primarily from UFCN_Direct with the UFCN_Chem data used to fill in periods where UFCN_Direct data were not available.

Aerosol in-situ Light Scattering and Absorption, Scattering and Absorption angstrom exponents, Single Scatter Albedo, and RH dependence of scattering.
A suite of instruments was used to measure aerosol light scattering and absorption. Two TSI integrating nephelometers (Model 3563) measured integrated total scattering at wavelengths of 450, 550, and 700nm (Anderson et al, 1996; Anderson and Ogren, 1998). Sample flow was taken from the AeroPhysics sampling van inlet. One nephelometer (neph_sub10) always measured aerosols of aerodynamic diameter Dae < 10 micrometers; the second nephelometer (neph_sub1) measured only aerosol of aerodynamic diameter Dae < 1.1 micrometer. When possible, both nephelometers were operated at a sensing volume RH approximately that of the indicated target sample RH. This RH was controlled by controlling the temperature of the insulated cabinet that housed the nephelometers.

The 10 and 1.1 micrometer cut-offs were made with Berner multi-jet cascade impactors. Two Radiance Research Particle Soot Absorption Photometers were used to measure light absorption by aerosols at 467, 530, and 660nm (Bond et al., 1999; Virkkula et al.,2005) under 'dry' (<25% RH) conditions for sub 10 (psap_sub10) and sub 1 (psap_sub1) micrometer aerosols at the outlet of the respective nephelometers.

A separate humidity controlled system measured submicrometric light scattering at two different relative humidities, approximately 25% RH and 85% RH (neph_sub1_lo and neph_sub1_hi) with two TSI integrating 3-wavelength nephelometers operated in series downstream of a Berner impactor. There are no backscattering values available from the _hi or _lo nephelometers as the backscatter shutter mode was set to "total" due to problematic backscatter shutters. The first nephelometer measured scattering of the ~60% conditioned aerosol from the AeroPhysics sampling van inlet at approximately 25% RH after drying of the sample flow using a PermaPure, multiple-tube nafion dryer model PR-94. Downstream of this nephelometer a humidifier was used to add water vapor to the sample flow (6 microporous teflon tubes surrounded by a heatable water-jacket). The sample was conditioned to approximately 80% RH, scattering was measured by the second TSI neph. Humidity was measured by using a chilled mirror dew point hygrometer downstream of the second neph.

On the PMEL Data Sever the neph_sub1_lo data are in the SUBSCATloRH file, the neph_sub1_hi data are in the SUBSCAThiRH file.

DATA COLLECTION AND PROCESSING
Data from both systems were collected and processed at 1 sec resolution but are reported as 60-second averages. Data from each instrument are corrected and adjusted as described below, allowing for derivation of extensive parameters (light scattering and absorption) and intensive parameters (single scatter albedo, Angstrom exponent). Light absorption is box-car averaged by the instrument over a window 10-seconds wide.

For all parameters, the bad value code is NaN. Intensive parameters are set to NaN when the extensive properties used in their calculation fell below the measurement noise threshold. Both extensive and intensive properties are set to NaN during certain events, such as during filter changes, instrument calibration, obvious instrument failure etc. Negative values of absorption might occur during periods of absorption signals near or in the range of the instrument noise, and are partly shifted into the negative range due to scattering correction.

STP are p_STP=1013.2 hPa, T_STP=273.2 K.

DERIVATION OF MEAN VALUES
EXTENSIVE PARAMETERS
Data from the TSI integrating nephelometers, Neph sub10 and Neph sub1, and f(RH=low) and f(RH=high) are processed as follows:

Span gas (air and CO2) calibrations were made before the field campaign using the standard TSI program. During the campaign zero (particle free air at ambient water vapor conc.) and CO2 span checks were made at three to four day intervals. The resulting zero offset and span factors were applied to the data.
The TSI nephelometers measure integrated light scattering into 7-170 degrees. To derive total scatter (0-180 degrees) and hemispheric backscatter (90-180 degrees) angular truncation correction factors were applied as recommended by Anderson and Ogren (1998).
Total and hemispheric backscatter were adjusted to STP. (NOTE: There are no backscattering values available from the f(RH=low) and f(RH=high) nephelometers as discussed above.)
Data from the Radiance Research Particle Soot Absorption Photometers, PSAPs sub1, sub10, and _lo,

are processed as follows:

Reported values of light absorption are corrected for spot size, flow rate, artifact response to scattering, and error in the manufacturer's calibration, all given by Bond et al. (1999). Except the spot size, all corrections were made after data collection, i.e. they are not integrated into the PSAP firmware. However, the PSAP's were flow-calibrated prior to the campaign, and a flow correction was applied based on routine flow checks during the cruise.
Light absorption is adjusted to STP
The f(RH) of scattering data is processed as follows:

Reported values of light scattering at low RH and high RH were corrected to STP.
the exponent describing the f(RH) dependence of scattering was determined using the scattering values of neph_lo_1min (fRH-optics) and neph_hi_1min (fRH-optics) and applying a linear regression of the relationship
log(scat_hi/scat_lo) = -gamma*log((1-fracRH_hi)/(1-fracRH_lo))
based on the Kasten & Hanel formula
scat_hi=scat_lo(1-fracRH)^(-gamma) [Wang et. al.,2006]
The fRH values given on the data server (SUBFRH) are at the measured high and low RH values. The gamma factor calculated from the equation above is available upon request.

INTENSIVE PARAMETERS
The Angstrom exponent for scattering at (450,550,700nm),

A_Blue = -log(Bs/Gs)/log(450/550)

A_Green = -log(Bs/Rs)/log(450/700)

A_Red = -log(Gs/Rs)/log(550/700)

where Bs, Gs and Rs are light scattering values that apply to 450, 550 and 700 nm, respectively and where these values have been smoothed by averaging over a 30-sec wide window.

The Angstrom exponent for absorption at (467,530,660nm),

A_Blue = -log(Ba/Ga)/log(467/530)

A_Green = -log(Bs/Rs)/log(467/660)

A_Red = -log(Gs/Rs)/log(530/660)

where Ba, Ga and Ra are light absorption values that apply to 467, 530 and 660 nm, respectively and where these values have been smoothed by averaging over a 30-sec wide window.

The single scatter albedo of the sub-micron aerosol was calculated as follows:

SSA = Neph1_scat / (Neph1_scat + PSAP1_abs)

where light absorption values and scattering have been averaged over 60 seconds. SSA is given for 532nm, i.e. the nephelometer data was wavelength-shifted to match the PSAP wavelength using the nephelometer based Angstrom exponent.

The sub 1 micron and sub 10 micron Scattering Angstrom exponents can be found on the PMEL Data Server in the SUBSCATANG and TOTSCATANG files. The sub 1 micron and sub 10 micron Absorption Angstrom exponents can be found in the SUBABSANG and TOTABSANG files. The sub 1 micron and sub 10 micron single scatter albedo values can be found in the SUBSSA and TOTSSA files.

REFERENCES
Anderson, T.L., D.S. Covert, S.F. Marshall, M. L. Laucks, R.J. Charlson, A.P. Waggoner, J.A. Ogren, R. Caldow, R. Holm, F. Quant, G. Sem, A. Wiedensohler, N.A. Ahlquist, and T.S. Bates, "Performance characteristics of a high-sensitivity, three-wavelength, total scatter/backscatter nephelometer", J. Atmos. Oceanic Technol., 13, 967-986, 1996.
Anderson, T.L., and J.A. Ogren, "Determining aerosol radiative properties using the TSI 3563 integrating nephelometer", Aerosol Sci. Technol., 29, 57-69, 1998.
Bond, T.C., T.L. Anderson, and D. Campbell, "Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols", Aerosol Sci. and Tech., 30, 582-600, 1999.

A. Virkkula, N. C. Ahquist, D. S. Covert, P. J. Sheridan, W. P. Arnott, J. A Ogren,"A three-wavelength optical extinction cell for measuring aerosol light extinction and its application to determining absorption coefficient", Aero. Sci. and Tech., 39,52-67, 2005
A. Virkkula, N. C. Ahquist, D. S. Covert, W. P. Arnott, P. J. Sheridan, P. K. Quinn,D. J. Coffman, "Modification, calibration and a field test of an instrument for measuring light absorption by particles", Aero. Sci. and Tech., 39, 68-83, 2005
Wang et. al, Aerosol optical properties over the Northwestern Atlantic Ocean during NEAQS-ITCT 2004, and the influence of particulate matter on aerosol hygroscopicity, submitted to J. Geo. Phys. Res., 2006

Ozone
Air was pulled from 16 m above sea level through a 1/4 inch teflon line at approximately 1 liter min-1 into a Thermo Environmental Instruments Model 49c ozone analyzer. The air inlet was approximately 2 meters below the aerosol inlet. During periods when the relative wind was behind the beam, there were obvious periods when ship exhaust was reacting with ozone, resulting in sudden spikes of low ozone. These spikes of low ozone have been edited out. The data are reported as one minute averages in units of ppb.

Seawater Measurements
Sea Surface Temperature and Salinity:
Sea Surface Temperature (SST) in degrees C is from the ship’s Hull Probe, Salinity in PSU is from the ship's SeaBird thermosalinograph. The temperature probe and water inlet for the thermosalinograph were located 5.3 meters below the water line. The underway chlorophyll data are from the ship’s Seapoint fluorometer.
Chlorophyll:
Chlorophyll concentrations were measured from the continuous flow seawater system (inlet 5.3 meters below the water line at the bow of the ship) by Emmanuel Boss of the University of Maine and their data are presented here. Data are given in mg/m-3.
attribute NC_GLOBAL contributor_name String Coffman, Derek/NOAA-PMEL/Address: 7600 Sand Pt. Wy. NE,Seattle,WA 98115 /email: derek.coffman@noaa.gov
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3, NCCSV-1.0
attribute NC_GLOBAL creator_email String derek.coffman at noaa.gov
attribute NC_GLOBAL creator_name String Coffman, Derek
attribute NC_GLOBAL creator_url String https://www.pmel.noaa.gov/ (external link)
attribute NC_GLOBAL dimensions String time=33120
attribute NC_GLOBAL Easternmost_Easting double -37.3384
attribute NC_GLOBAL featureType String Trajectory
attribute NC_GLOBAL geospatial_lat_max double 54.1082
attribute NC_GLOBAL geospatial_lat_min double 40.2813
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -37.3384
attribute NC_GLOBAL geospatial_lon_min double -70.9079
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 18.0
attribute NC_GLOBAL geospatial_vertical_min double 18.0
attribute NC_GLOBAL geospatial_vertical_positive String up
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.pmel.noaa.gov/acg/data/index.html (external link)
attribute NC_GLOBAL institution String NOAA
attribute NC_GLOBAL keywords String above, absorb_467_sub1, absorb_467_sub10, absorb_530_sub1, absorb_530_sub10, absorb_660_sub1, absorb_660_sub10, absorption, aerosol, air, air_pressure, air_temp, air_temperature, altitude, ambient, atmosphere, atmospheric, baro_pressure, barometric, chemistry, chlorophyll, coefficient, color, component, concentration, course, data, datetime, density, dependence, diffuse, diffuse_downwelling_shortwave_flux_in_air, direction, downwelling, dried, due, duration, earth, Earth Science > Atmosphere > Altitude > Station Height, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation, Earth Science > Atmosphere > Atmospheric Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Atmosphere > Precipitation > Precipitation Rate, Earth Science > Atmosphere > Precipitation > Rain, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Salinity/Density > Salinity, east, eastward, eastward_wind, environmental, flux, frh, ground, heading, heat, heat flux, height, humidity, identifier, insolation, laboratory, latitude, level, light, longitude, main, marine, mass, mass_concentration_of_chlorophyll_in_sea_water, mean, measurements, meteorology, min, mm-1, naames, naames-1, noaa, north, northward, northward_wind, number, number_concentration_of_aerosol_particles_at_stp_in_air, ocean, ocean color, oceans, optical, optical properties, orientation, over, pacific, particle, particles, percent, platform, platform_course, platform_orientation, platform_speed_wrt_ground, pmel, practical, precipitation, pressure, properties, radiation, radiative, rain, rain_rate, rainfall, rainfall_rate, rate, relative, relative_humidity, relative_wind_direction, relative_wind_speed, salinity, sample, scatter_450_sub1, scatter_550_sub1, scatter_700_sub1, scatter_frh_450_sub1, scatter_frh_550_sub1, scatter_frh_700_sub1, scatter_rh_sub10, scattering, science, sea, sea_surface_temperature, sea_water_practical_salinity, seawater, ship, ship_course, ship_heading, ship_speed, shortwave, speed, static, station, statistics, stp, surface, temperature, time, trajectory, trajectory_id, ufcn, ultrafine, vapor, volume, volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles, volume_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles, water, wind, wind_direction, wind_from_direction, wind_speed, wind_u, wind_v, winds, wrt
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0).
attribute NC_GLOBAL Northernmost_Northing double 54.1082
attribute NC_GLOBAL platform String Atlantis
attribute NC_GLOBAL product_version String 0
attribute NC_GLOBAL project String NAAMES-1
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 40.2813
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v70
attribute NC_GLOBAL subsetVariables String trajectory_id, duration, altitude
attribute NC_GLOBAL summary String Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry NAAMES-1 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.
attribute NC_GLOBAL time_coverage_end String 2015-11-29T11:59:00Z
attribute NC_GLOBAL time_coverage_start String 2015-11-06T12:00:00Z
attribute NC_GLOBAL title String PMEL Atmospheric Chemistry NAAMES-1 Aerosol Main Data, 1 min data
attribute NC_GLOBAL Westernmost_Easting double -70.9079
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.4468112E9, 1.44879834E9
attribute time axis String T
attribute time comment String Start of sampling period
attribute time coords String time
attribute time ioos_category String Time
attribute time long_name String Datetime UTC
attribute time source_name String datetime_utc
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable trajectory_id   String  
attribute trajectory_id cf_role String trajectory_id
attribute trajectory_id coords String time
attribute trajectory_id ioos_category String Identifier
attribute trajectory_id long_name String Trajectory ID
variable duration   int  
attribute duration _FillValue int 2147483647
attribute duration actual_range int 60, 60
attribute duration coords String time
attribute duration ioos_category String Time
attribute duration long_name String Duration
attribute duration units String second
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range double 40.2813, 54.1082
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude coords String time
attribute latitude instrument String GPS
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude source String surface observation
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
attribute latitude valid_max double 90.0
attribute latitude valid_min double -90.0
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range double -70.9079, -37.3384
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude coords String time
attribute longitude instrument String GPS
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude source String surface observation
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
attribute longitude valid_max double 180.0
attribute longitude valid_min double -180.0
variable altitude   double  
attribute altitude _CoordinateAxisType String Height
attribute altitude _CoordinateZisPositive String up
attribute altitude actual_range double 18.0, 18.0
attribute altitude axis String Z
attribute altitude colorBarMinimum double 0.0
attribute altitude coords String time
attribute altitude ioos_category String Location
attribute altitude long_name String height above mean sea level
attribute altitude positive String up
attribute altitude standard_name String altitude
attribute altitude units String m
attribute altitude valid_min double 0.0
variable ship_speed   double  
attribute ship_speed actual_range double 0.0, 13.19
attribute ship_speed colorBarMaximum double 25.0
attribute ship_speed colorBarMinimum double 0.0
attribute ship_speed coords String time
attribute ship_speed instrument String GPS
attribute ship_speed ioos_category String Unknown
attribute ship_speed long_name String Ship Speed over Ground
attribute ship_speed source String surface observation
attribute ship_speed standard_name String platform_speed_wrt_ground
attribute ship_speed units String knots
attribute ship_speed valid_max double 20.0
attribute ship_speed valid_min double 0.0
variable ship_course   double  
attribute ship_course actual_range double 0.0, 360.0
attribute ship_course colorBarMaximum double 400.0
attribute ship_course colorBarMinimum double 0.0
attribute ship_course coords String time
attribute ship_course instrument String GPS
attribute ship_course ioos_category String Unknown
attribute ship_course long_name String Ship Course over Ground
attribute ship_course source String surface observation
attribute ship_course standard_name String platform_course
attribute ship_course units String degree
attribute ship_course valid_max double 360.0
attribute ship_course valid_min double 0.0
variable ship_heading   double  
attribute ship_heading actual_range double 0.0, 360.0
attribute ship_heading colorBarMaximum double 400.0
attribute ship_heading colorBarMinimum double 0.0
attribute ship_heading coords String time
attribute ship_heading instrument String GPS Compass and Ship Gyrocompass
attribute ship_heading ioos_category String Unknown
attribute ship_heading long_name String Ship Heading
attribute ship_heading source String surface observation
attribute ship_heading standard_name String platform_orientation
attribute ship_heading units String degree
attribute ship_heading valid_max double 360.0
attribute ship_heading valid_min double 0.0
variable air_temp   double  
attribute air_temp actual_range double 0.01, 20.1
attribute air_temp colorBarMaximum double 40.0
attribute air_temp colorBarMinimum double -10.0
attribute air_temp coords String time
attribute air_temp instrument String Ship and PMEL sensor
attribute air_temp ioos_category String Temperature
attribute air_temp long_name String Air Temperature
attribute air_temp source String surface observation
attribute air_temp standard_name String air_temperature
attribute air_temp units String degree_C
attribute air_temp valid_max double 50.0
attribute air_temp valid_min double -20.0
variable rh   double  
attribute rh actual_range double 41.73, 93.3
attribute rh colorBarMaximum double 100.0
attribute rh colorBarMinimum double 0.0
attribute rh coords String time
attribute rh instrument String Ship and PMEL Sensors
attribute rh ioos_category String Meteorology
attribute rh long_name String Relative Humidity
attribute rh source String surface observation
attribute rh standard_name String relative_humidity
attribute rh units String percent
attribute rh valid_max double 110.0
attribute rh valid_min double 0.0
variable baro_pressure   double  
attribute baro_pressure actual_range double 981.11, 1048.63
attribute baro_pressure colorBarMaximum double 1050.0
attribute baro_pressure colorBarMinimum double 950.0
attribute baro_pressure coords String time
attribute baro_pressure instrument String SHIP and PMEL sensors
attribute baro_pressure ioos_category String Pressure
attribute baro_pressure long_name String Barometric Pressure
attribute baro_pressure source String surface observation
attribute baro_pressure standard_name String air_pressure
attribute baro_pressure units String hPa
attribute baro_pressure valid_max double 1050.0
attribute baro_pressure valid_min double 950.0
variable insolation   double  
attribute insolation _FillValue double NaN
attribute insolation actual_range double 6.5, 773.8
attribute insolation colorBarMaximum double 10.0
attribute insolation colorBarMinimum double -10.0
attribute insolation coords String time
attribute insolation instrument String Epply radiometer 8-48
attribute insolation ioos_category String Heat Flux
attribute insolation long_name String Shortwave Flux
attribute insolation source String surface observation
attribute insolation standard_name String diffuse_downwelling_shortwave_flux_in_air
attribute insolation units String W m-2
attribute insolation valid_max double 1500.0
attribute insolation valid_min double -10.0
variable rain_rate   double  
attribute rain_rate _FillValue double NaN
attribute rain_rate actual_range double 0.0, 87.38
attribute rain_rate colorBarMaximum double 1.0E-4
attribute rain_rate colorBarMinimum double 0.0
attribute rain_rate coords String time
attribute rain_rate instrument String PEML Vaisala WX520 Precipitation Sensor
attribute rain_rate ioos_category String Meteorology
attribute rain_rate long_name String Rain Rate
attribute rain_rate source String surface observation
attribute rain_rate standard_name String rainfall_rate
attribute rain_rate units String MM' 'Hour-1
attribute rain_rate valid_max double 200.0
attribute rain_rate valid_min double 0.0
variable wind_speed   double  
attribute wind_speed actual_range double 0.1, 27.57
attribute wind_speed colorBarMaximum double 15.0
attribute wind_speed colorBarMinimum double 0.0
attribute wind_speed coords String time
attribute wind_speed instrument String Ship SSSSG IMET wind
attribute wind_speed ioos_category String Wind
attribute wind_speed long_name String Wind Speed
attribute wind_speed source String surface observation
attribute wind_speed standard_name String wind_speed
attribute wind_speed units String m s-1
attribute wind_speed valid_max double 50.0
attribute wind_speed valid_min double 0.0
variable wind_direction   double  
attribute wind_direction actual_range double 0.0, 360.0
attribute wind_direction colorBarMaximum double 360.0
attribute wind_direction colorBarMinimum double 0.0
attribute wind_direction coords String time
attribute wind_direction instrument String Ship SSSSG IMET wind
attribute wind_direction ioos_category String Wind
attribute wind_direction long_name String Wind Direction
attribute wind_direction source String surface observation
attribute wind_direction standard_name String wind_from_direction
attribute wind_direction units String degree
attribute wind_direction valid_max double 360.0
attribute wind_direction valid_min double 0.0
variable wind_u   double  
attribute wind_u actual_range double -22.1, 21.48
attribute wind_u colorBarMaximum double 15.0
attribute wind_u colorBarMinimum double -15.0
attribute wind_u coords String time
attribute wind_u instrument String Wind to East: Ship SSSSG IMET wind
attribute wind_u ioos_category String Wind
attribute wind_u long_name String east component of the wind
attribute wind_u source String surface observation
attribute wind_u standard_name String eastward_wind
attribute wind_u units String m s-1
attribute wind_u valid_max double 50.0
attribute wind_u valid_min double 0.0
variable wind_v   double  
attribute wind_v actual_range double -22.82, 17.82
attribute wind_v colorBarMaximum double 15.0
attribute wind_v colorBarMinimum double -15.0
attribute wind_v coords String time
attribute wind_v instrument String Wind to North: Ship SSSG IMET wind
attribute wind_v ioos_category String Wind
attribute wind_v long_name String north component of the wind
attribute wind_v source String surface observation
attribute wind_v standard_name String northward_wind
attribute wind_v units String m s-1
attribute wind_v valid_max double 50.0
attribute wind_v valid_min double 0.0
variable relative_wind_speed   double  
attribute relative_wind_speed actual_range double 0.06, 24.46
attribute relative_wind_speed colorBarMaximum double 15.0
attribute relative_wind_speed colorBarMinimum double 0.0
attribute relative_wind_speed coords String time
attribute relative_wind_speed instrument String PMEL WX520 anamometer and ship WX520 anamometer
attribute relative_wind_speed ioos_category String Wind
attribute relative_wind_speed long_name String Wind Speed Relative to Ship
attribute relative_wind_speed source String surface observation
attribute relative_wind_speed standard_name String wind_speed
attribute relative_wind_speed units String m s-1
attribute relative_wind_speed valid_max double 50.0
attribute relative_wind_speed valid_min double 0.0
variable relative_wind_direction   double  
attribute relative_wind_direction actual_range double -180.0, 180.0
attribute relative_wind_direction colorBarMaximum double 360.0
attribute relative_wind_direction colorBarMinimum double 0.0
attribute relative_wind_direction coords String time
attribute relative_wind_direction instrument String PMEL WX520 anamometer and ship WX520 anamometer
attribute relative_wind_direction ioos_category String Wind
attribute relative_wind_direction long_name String Wind Direction Relative to Ship
attribute relative_wind_direction source String surface observation
attribute relative_wind_direction standard_name String wind_from_direction
attribute relative_wind_direction units String degree
attribute relative_wind_direction valid_max double 180.0
attribute relative_wind_direction valid_min double -180.0
variable cn   double  
attribute cn _FillValue double NaN
attribute cn actual_range double 0.0, 11634.9
attribute cn colorBarMaximum double 100.0
attribute cn colorBarMinimum double 0.0
attribute cn coords String time
attribute cn instrument String TSI 3010
attribute cn ioos_category String Statistics
attribute cn long_name String Particle number concentration
attribute cn source String surface observation
attribute cn units String cm-3
attribute cn valid_max double 500000.0
attribute cn valid_min double 0.0
variable ufcn   double  
attribute ufcn _FillValue double NaN
attribute ufcn actual_range double 0.0, 13981.5
attribute ufcn colorBarMaximum double 100.0
attribute ufcn colorBarMinimum double 0.0
attribute ufcn coords String time
attribute ufcn instrument String TSI 3785 and TSI 3025A
attribute ufcn ioos_category String Statistics
attribute ufcn long_name String Ultrafine particle number concentration
attribute ufcn source String surface observation
attribute ufcn standard_name String number_concentration_of_aerosol_particles_at_stp_in_air
attribute ufcn units String cm-3
attribute ufcn valid_max double 1200000.0
attribute ufcn valid_min double 0.0
variable sea_surface_temperature   double  
attribute sea_surface_temperature _FillValue double NaN
attribute sea_surface_temperature actual_range double 2.773, 23.954
attribute sea_surface_temperature colorBarMaximum double 32.0
attribute sea_surface_temperature colorBarMinimum double 0.0
attribute sea_surface_temperature coords String time
attribute sea_surface_temperature instrument String Ship Thermosalinograph
attribute sea_surface_temperature ioos_category String Temperature
attribute sea_surface_temperature long_name String Sea Surface Temperature
attribute sea_surface_temperature source String surface ocean observation
attribute sea_surface_temperature standard_name String sea_surface_temperature
attribute sea_surface_temperature units String degree_C
attribute sea_surface_temperature valid_max double 45.0
attribute sea_surface_temperature valid_min double -10.0
variable salinity   double  
attribute salinity _FillValue double NaN
attribute salinity actual_range double 31.293, 36.563
attribute salinity colorBarMaximum double 37.0
attribute salinity colorBarMinimum double 32.0
attribute salinity coords String time
attribute salinity instrument String Ship Thermosalinograph
attribute salinity ioos_category String Salinity
attribute salinity long_name String Sea Surface Salinity
attribute salinity source String surface ocean observation
attribute salinity standard_name String sea_water_practical_salinity
attribute salinity units String PSU
attribute salinity valid_max double 45.0
attribute salinity valid_min double 0.0
variable chlorophyll   double  
attribute chlorophyll _FillValue double NaN
attribute chlorophyll actual_range double 0.11, 5.748
attribute chlorophyll colorBarMaximum double 30.0
attribute chlorophyll colorBarMinimum double 0.03
attribute chlorophyll colorBarScale String Log
attribute chlorophyll coords String time
attribute chlorophyll instrument String PMEL Turner fluorometer and Ship fluorometer
attribute chlorophyll ioos_category String Ocean Color
attribute chlorophyll long_name String Sea Surface Chlorophyll
attribute chlorophyll source String surface ocean observation
attribute chlorophyll standard_name String mass_concentration_of_chlorophyll_in_sea_water
attribute chlorophyll units String mg m-3
attribute chlorophyll valid_max double 10.0
attribute chlorophyll valid_min double 0.0
variable scatter_450_sub1   double  
attribute scatter_450_sub1 _FillValue double NaN
attribute scatter_450_sub1 actual_range double 2.07063, 88.5143
attribute scatter_450_sub1 colorBarMaximum double 500.0
attribute scatter_450_sub1 colorBarMinimum double -500.0
attribute scatter_450_sub1 coords String time
attribute scatter_450_sub1 instrument String TSI Model 3563 Nephelometer
attribute scatter_450_sub1 ioos_category String Optical Properties
attribute scatter_450_sub1 long_name String Aerosol light scattering coefficient for Dp < 1.1 um at 450 nm, Mm-1
attribute scatter_450_sub1 source String surface observation
attribute scatter_450_sub1 standard_name String volume_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles
attribute scatter_450_sub1 units String MM-1
attribute scatter_450_sub1 valid_max double 10000.0
attribute scatter_450_sub1 valid_min double 0.0
variable scatter_550_sub1   double  
attribute scatter_550_sub1 _FillValue double NaN
attribute scatter_550_sub1 actual_range double 1.05414, 74.455
attribute scatter_550_sub1 colorBarMaximum double 500.0
attribute scatter_550_sub1 colorBarMinimum double -500.0
attribute scatter_550_sub1 coords String time
attribute scatter_550_sub1 instrument String TSI Model 3563 Nephelometer
attribute scatter_550_sub1 ioos_category String Optical Properties
attribute scatter_550_sub1 long_name String Aerosol light scattering coefficient for Dp < 1.1 um at 550 nm, Mm-1
attribute scatter_550_sub1 source String surface observation
attribute scatter_550_sub1 standard_name String volume_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles
attribute scatter_550_sub1 units String MM-1
attribute scatter_550_sub1 valid_max double 1000.0
attribute scatter_550_sub1 valid_min double 0.0
variable scatter_700_sub1   double  
attribute scatter_700_sub1 _FillValue double NaN
attribute scatter_700_sub1 actual_range double 0.721178, 53.0729
attribute scatter_700_sub1 colorBarMaximum double 500.0
attribute scatter_700_sub1 colorBarMinimum double -500.0
attribute scatter_700_sub1 coords String time
attribute scatter_700_sub1 instrument String TSI Model 3563 Nephelometer
attribute scatter_700_sub1 ioos_category String Optical Properties
attribute scatter_700_sub1 long_name String Aerosol light scattering coefficient for Dp < 1.1 um at 700 nm, Mm-1
attribute scatter_700_sub1 source String surface observation
attribute scatter_700_sub1 standard_name String volume_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles
attribute scatter_700_sub1 units String MM-1
attribute scatter_700_sub1 valid_max double 10000.0
attribute scatter_700_sub1 valid_min double 0.0
variable scatter_rh_sub10   double  
attribute scatter_rh_sub10 _FillValue double NaN
attribute scatter_rh_sub10 actual_range double 80.3387, 88.1143
attribute scatter_rh_sub10 colorBarMaximum double 100.0
attribute scatter_rh_sub10 colorBarMinimum double 0.0
attribute scatter_rh_sub10 coords String time
attribute scatter_rh_sub10 instrument String TSI Model 3563 Nephelometer with viasala sensor
attribute scatter_rh_sub10 ioos_category String Meteorology
attribute scatter_rh_sub10 long_name String Sample RH of aerosol light scattering coefficient for Dp < 10 um, %
attribute scatter_rh_sub10 source String surface observation
attribute scatter_rh_sub10 standard_name String relative_humidity
attribute scatter_rh_sub10 units String percent
attribute scatter_rh_sub10 valid_max double 100.0
attribute scatter_rh_sub10 valid_min double 0.0
variable absorb_467_sub1   double  
attribute absorb_467_sub1 _FillValue double NaN
attribute absorb_467_sub1 actual_range double 3.58665E-6, 6.20351
attribute absorb_467_sub1 colorBarMaximum double 1500.0
attribute absorb_467_sub1 colorBarMinimum double 0.0
attribute absorb_467_sub1 coords String time
attribute absorb_467_sub1 instrument String PSAP
attribute absorb_467_sub1 ioos_category String Optical Properties
attribute absorb_467_sub1 long_name String Aerosol light absorption coefficient for Dp < 1.1 um at 467 nm, Mm-1
attribute absorb_467_sub1 source String surface observation
attribute absorb_467_sub1 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_467_sub1 units String MM-1
attribute absorb_467_sub1 valid_max double 1000.0
attribute absorb_467_sub1 valid_min double 0.0
variable absorb_530_sub1   double  
attribute absorb_530_sub1 _FillValue double NaN
attribute absorb_530_sub1 actual_range double 3.59917E-5, 5.73288
attribute absorb_530_sub1 colorBarMaximum double 1500.0
attribute absorb_530_sub1 colorBarMinimum double 0.0
attribute absorb_530_sub1 coords String time
attribute absorb_530_sub1 instrument String PSAP
attribute absorb_530_sub1 ioos_category String Optical Properties
attribute absorb_530_sub1 long_name String Aerosol light absorption coefficient for Dp < 1.1 um at 530 nm, Mm-1
attribute absorb_530_sub1 source String surface observation
attribute absorb_530_sub1 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_530_sub1 units String MM-1
attribute absorb_530_sub1 valid_max double 1000.0
attribute absorb_530_sub1 valid_min double 0.0
variable absorb_660_sub1   double  
attribute absorb_660_sub1 _FillValue double NaN
attribute absorb_660_sub1 actual_range double 2.64338E-5, 5.11533
attribute absorb_660_sub1 colorBarMaximum double 1500.0
attribute absorb_660_sub1 colorBarMinimum double 0.0
attribute absorb_660_sub1 coords String time
attribute absorb_660_sub1 instrument String PSAP
attribute absorb_660_sub1 ioos_category String Optical Properties
attribute absorb_660_sub1 long_name String Aerosol light absorption coefficient for Dp < 1.1 um at 660 nm, Mm-1
attribute absorb_660_sub1 source String surface observation
attribute absorb_660_sub1 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_660_sub1 units String MM-1
attribute absorb_660_sub1 valid_max double 1000.0
attribute absorb_660_sub1 valid_min double 0.0
variable absorb_467_sub10   double  
attribute absorb_467_sub10 _FillValue double NaN
attribute absorb_467_sub10 actual_range double 2.90933E-5, 28.834
attribute absorb_467_sub10 colorBarMaximum double 1500.0
attribute absorb_467_sub10 colorBarMinimum double 0.0
attribute absorb_467_sub10 coords String time
attribute absorb_467_sub10 instrument String PSAP
attribute absorb_467_sub10 ioos_category String Optical Properties
attribute absorb_467_sub10 long_name String Aerosol light absorption coefficient for Dp < 10 um at 467 nm, Mm-1
attribute absorb_467_sub10 source String surface observation
attribute absorb_467_sub10 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_467_sub10 units String MM-1
attribute absorb_467_sub10 valid_max double 1000.0
attribute absorb_467_sub10 valid_min double 0.0
variable absorb_530_sub10   double  
attribute absorb_530_sub10 _FillValue double NaN
attribute absorb_530_sub10 actual_range double 2.0149E-5, 29.0391
attribute absorb_530_sub10 colorBarMaximum double 1500.0
attribute absorb_530_sub10 colorBarMinimum double 0.0
attribute absorb_530_sub10 coords String time
attribute absorb_530_sub10 instrument String PSAP
attribute absorb_530_sub10 ioos_category String Optical Properties
attribute absorb_530_sub10 long_name String Aerosol light absorption coefficient for Dp < 10 um at 530 nm, Mm-1
attribute absorb_530_sub10 source String surface observation
attribute absorb_530_sub10 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_530_sub10 units String MM-1
attribute absorb_530_sub10 valid_max double 1000.0
attribute absorb_530_sub10 valid_min double 0.0
variable absorb_660_sub10   double  
attribute absorb_660_sub10 _FillValue double NaN
attribute absorb_660_sub10 actual_range double 2.81805E-5, 25.8135
attribute absorb_660_sub10 colorBarMaximum double 1500.0
attribute absorb_660_sub10 colorBarMinimum double 0.0
attribute absorb_660_sub10 coords String time
attribute absorb_660_sub10 instrument String PSAP
attribute absorb_660_sub10 ioos_category String Optical Properties
attribute absorb_660_sub10 long_name String Aerosol light absorption coefficient for Dp < 10 um at 660 nm, Mm-1
attribute absorb_660_sub10 source String surface observation
attribute absorb_660_sub10 standard_name String volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
attribute absorb_660_sub10 units String MM-1
attribute absorb_660_sub10 valid_max double 1000.0
attribute absorb_660_sub10 valid_min double 0.0
variable scatter_frh_450_sub1   double  
attribute scatter_frh_450_sub1 _FillValue double NaN
attribute scatter_frh_450_sub1 actual_range double 0.463275, 6.16379
attribute scatter_frh_450_sub1 coords String time
attribute scatter_frh_450_sub1 instrument String TSI Model 3563 Nephelometers
attribute scatter_frh_450_sub1 ioos_category String Optical Properties
attribute scatter_frh_450_sub1 long_name String Dependence of aerosol light scattering on RH (fRH) for Dp < 1.1 um at 450 nm
attribute scatter_frh_450_sub1 source String surface observation
variable scatter_frh_550_sub1   double  
attribute scatter_frh_550_sub1 _FillValue double NaN
attribute scatter_frh_550_sub1 actual_range double 0.839279, 7.05224
attribute scatter_frh_550_sub1 coords String time
attribute scatter_frh_550_sub1 ioos_category String Optical Properties
attribute scatter_frh_550_sub1 long_name String Dependence of aerosol light scattering on RH (fRH) for Dp < 1.1 um at 550 nm
attribute scatter_frh_550_sub1 source String surface observation
variable scatter_frh_700_sub1   double  
attribute scatter_frh_700_sub1 _FillValue double NaN
attribute scatter_frh_700_sub1 actual_range double 1.81597, 7.74052
attribute scatter_frh_700_sub1 coords String time
attribute scatter_frh_700_sub1 ioos_category String Optical Properties
attribute scatter_frh_700_sub1 long_name String Dependence of aerosol light scattering on RH (fRH) for Dp < 1.1 um at 700 nm
attribute scatter_frh_700_sub1 source String surface observation

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
ERDDAP, Version 2.18
Disclaimers | Privacy Policy | Contact