The Pacific Marine Environmental Laboratory's ERDDAP data server for public access to scientific data
NOAA OAR 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 |
| Dataset Title: | PMEL Atmospheric Chemistry MAGE-92 Aerosol Chemistry data
|
| Institution: | NOAA (Dataset ID: ACG_MAGE-92_Vickers_chemistry) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Files
| Make a graph
|
Attributes {
s {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 6.992121e+8, 7.0023708e+8;
String axis "T";
String comment "Start of sampling period";
String coords "time";
String ioos_category "Time";
String long_name "Datetime UTC";
String source_name "datetime_utc";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00Z";
String units "seconds since 1970-01-01T00:00:00Z";
}
trajectory_id {
String cf_role "trajectory_id";
String coords "time";
String ioos_category "Identifier";
String long_name "Trajectory ID";
}
duration {
Int32 _FillValue 2147483647;
Int32 actual_range 9360, 40020;
String coords "time";
String ioos_category "Time";
String long_name "Duration";
String units "second";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 actual_range -12.514, 10.298;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String coords "time";
String instrument "GPS";
String ioos_category "Location";
String long_name "Latitude";
String source "surface observation";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float64 actual_range -140.009, -134.271;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String coords "time";
String instrument "GPS";
String ioos_category "Location";
String long_name "Longitude";
String source "surface observation";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
altitude {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "up";
Float64 actual_range 18.0, 18.0;
String axis "Z";
Float64 colorBarMinimum 0.0;
String coords "time";
String ioos_category "Location";
String long_name "height above mean sea level";
String positive "up";
String standard_name "altitude";
String units "m";
Float64 valid_min 0.0;
}
mid_time {
String _CoordinateAxisType "Time";
Float64 actual_range 6.9923211e+8, 7.0024878e+8;
String axis "T";
String comment "Midpoint of sampling period";
String coords "time";
String ioos_category "Time";
String long_name "midpoint Datetime UTC";
String source_name "datetime_utc";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00Z";
String units "seconds since 1970-01-01T00:00:00Z";
}
end_time {
String _CoordinateAxisType "Time";
Float64 actual_range 6.9925212e+8, 7.0026048e+8;
String axis "T";
String comment "End of sampling period";
String coords "time";
String ioos_category "Time";
String long_name "endpoint Datetime UTC";
String source_name "datetime_utc";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00Z";
String units "seconds since 1970-01-01T00:00:00Z";
}
IC_Cl_sub1 {
Float64 actual_range 0.0, 0.831;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Unknown";
String long_name "Particulate Cl Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
IC_NO3_sub1 {
Float64 actual_range 0.0, 0.01;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Dissolved Nutrients";
String long_name "Particulate NO3 Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String standard_name "mass_concentration_of_nitrate_dry_aerosol_particles_in_air";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
IC_SO4_sub1 {
Float64 actual_range 0.157, 4.272;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Optical Properties";
String long_name "Particulate SO4 Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String standard_name "mass_concentration_of_sulfate_dry_aerosol_particles_in_air";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
IC_Na_sub1 {
Float64 actual_range 0.008, 0.483;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Unknown";
String long_name "Particulate Na Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
IC_NH4_sub1 {
Float64 actual_range 0.035, 0.568;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Dissolved Nutrients";
String long_name "Particulate NH4 Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String standard_name "mass_concentration_of_ammonium_dry_aerosol_particles_in_air";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
IC_K_sub1 {
Float64 actual_range 0.0, 0.149;
Float64 colorBarMaximum 60.0;
Float64 colorBarMinimum 0.0;
String coords "time";
String instrument "2-stage impactor -- ion chromatographic analysis";
String ioos_category "Unknown";
String long_name "Particulate K Concentration for Dp < 1.1 um, ug m-3";
String source "surface observation";
String units "micrograms m-3";
Float64 valid_max 50.0;
Float64 valid_min 0.0;
}
}
NC_GLOBAL {
String cdm_data_type "Trajectory";
String cdm_trajectory_variables "trajectory_id";
String contributor_name "Coffman, Derek/NOAA-PMEL/Address: 7600 Sand Pt. Wy. NE,Seattle,WA 98115 /email: derek.coffman@noaa.gov";
String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.0";
String creator_email "derek.coffman@noaa.gov";
String creator_name "Coffman, Derek";
String creator_url "https://www.pmel.noaa.gov/";
String dimensions "time=42";
Float64 Easternmost_Easting -134.271;
String featureType "Trajectory";
Float64 geospatial_lat_max 10.298;
Float64 geospatial_lat_min -12.514;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -134.271;
Float64 geospatial_lon_min -140.009;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 18.0;
Float64 geospatial_vertical_min 18.0;
String geospatial_vertical_positive "up";
String geospatial_vertical_units "m";
String history
"2025-12-11T09:55:48Z (local files)
2025-12-11T09:55:48Z https://data.pmel.noaa.gov/pmel/erddap/tabledap/ACG_MAGE-92_Vickers_chemistry.html";
String infoUrl "https://www.pmel.noaa.gov/acg/data/index.html";
String institution "NOAA";
String keywords "above, aerosol, air, altitude, ammonium, atmosphere, atmospheric, chemistry, concentration, data, datetime, dissolved, dissolved nutrients, dry, duration, earth, Earth Science > Atmosphere > Altitude > Station Height, end_time, endpoint, environmental, flux, global, gofs, height, IC_Cl_sub1, IC_K_sub1, IC_Na_sub1, IC_NH4_sub1, IC_NO3_sub1, IC_SO4_sub1, identifier, jgofs, joint, laboratory, latitude, level, longitude, m-3, mage, mage-92, marine, mass, mass_concentration_of_ammonium_dry_aerosol_particles_in_air, mass_concentration_of_nitrate_dry_aerosol_particles_in_air, mass_concentration_of_sulfate_dry_aerosol_particles_in_air, mean, mid_time, midpoint, n02, nh4, nitrate, no3, noaa, nutrients, ocean, optical, optical properties, pacific, particles, particulate, pmel, properties, science, sea, so4, station, study, sulfate, time, trajectory, trajectory_id";
String keywords_vocabulary "GCMD Science Keywords";
String license "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).";
Float64 Northernmost_Northing 10.298;
String platform "Vickers";
String product_version "0";
String project "MAGE-92";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -12.514;
String standard_name_vocabulary "CF Standard Name Table v70";
String subsetVariables "trajectory_id, altitude";
String summary
"This was the first field project of the International Global Atmospheric Chemistry Program's Marine Aerosol and Gas Exchange project (IGAC-MAGE). The experiment was planned to coordinate with the Joint Global Ocean Flux Study (JGOFS) in order to complement their oceanographic program with trace gas and atmospheric chemistry measurements. The specific goals of the IGAC/MAGE 1992 equatorial field program were to:
1. Calculate air-sea exchange of short-lived biogenic trace gases using shipboard measurements of the important seawater and atmospheric species, air-sea exchange models and micro-budget flux estimates.
2. Measure deposition of nutrients to the sea surface and the effects of these nutrients on ocean primary productivity.
3. Compare the atmospheric chemistry and aerosol properties over productive (equatorial) and oligotrophic (12°S) waters.
4. Calculate the cycling of trace gases in the upper water column using measurements of the key species as a function of depth and microbiological rate studies.";
String time_coverage_end "1992-03-10T14:18:00Z";
String time_coverage_start "1992-02-27T17:35:00Z";
String title "PMEL Atmospheric Chemistry MAGE-92 Aerosol Chemistry data";
Float64 Westernmost_Easting -140.009;
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.