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Dataset Title:	Global Ocean Data Analysis Project (GLODAP) v2.2021
Institution:	GLODAP (Dataset ID: GLODAPv2_2021)
Range:	longitude = -180.0 to 180.0°E, latitude = -78.638 to 90.0°N, time = 1972-07-24T00:00:00Z to 2020-01-22T04:29:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  G2cruise {
    String _Unsigned "false";
    Byte actual_range 1, 126;
    String long_name "G2cruise";
  }
  G2region {
    String _Unsigned "false";
    Byte actual_range 1, 16;
    String long_name "G2region";
  }
  G2station {
    Int16 actual_range 0, 32058;
    String long_name "G2station";
  }
  G2cast {
    String _Unsigned "false";
    Byte actual_range 0, 126;
    String long_name "G2cast";
  }
  G2year {
    Int16 actual_range 1972, 2020;
    String long_name "G2year";
  }
  G2month {
    String _Unsigned "false";
    Byte actual_range 1, 12;
    String long_name "G2month";
  }
  G2day {
    String _Unsigned "false";
    Byte actual_range 1, 31;
    String long_name "G2day";
  }
  G2hour {
    String _Unsigned "false";
    Byte actual_range 0, 23;
    String long_name "G2hour";
  }
  G2minute {
    String _Unsigned "false";
    Byte actual_range 0, 59;
    String long_name "G2minute";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 8.0784e+7, 1.57966734e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -78.638, 90.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "G2latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -180.0, 180.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "G2longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  G2bottomdepth {
    Float32 actual_range 1.0, 9739.0;
    String long_name "G2bottomdepth";
  }
  G2maxsampdepth {
    Float32 actual_range -9999.0, 8004.0;
    String long_name "G2maxsampdepth";
  }
  G2bottle {
    String _Unsigned "false";
    Byte actual_range 0, 126;
    String long_name "G2bottle";
  }
  G2pressure {
    Float32 actual_range 0.0, 8004.0;
    String long_name "G2pressure";
    Float32 missing_value -9999.0;
  }
  G2depth {
    Float32 actual_range -9999.0, 7808.0;
    String long_name "G2depth";
  }
  G2temperature {
    Float32 actual_range -2.3138, 34.501;
    String long_name "G2temperature";
    Float32 missing_value -9999.0;
  }
  G2theta {
    Float32 actual_range -2.329, 34.49937;
    String long_name "G2theta";
    Float32 missing_value -9999.0;
  }
  G2salinity {
    Float32 actual_range 0.0, 40.613;
    String long_name "Sea Water Practical Salinity";
    Float32 missing_value -9999.0;
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  G2salinityf {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "Sea Water Practical Salinity";
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  G2salinityqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2salinityqc";
  }
  G2sigma0 {
    Float32 actual_range -1.8621, 29.331;
    String long_name "G2sigma0";
    Float32 missing_value -9999.0;
  }
  G2sigma1 {
    Float32 actual_range 2.6221, 33.87;
    String long_name "G2sigma1";
    Float32 missing_value -9999.0;
  }
  G2sigma2 {
    Float32 actual_range 7.0052, 38.461;
    String long_name "G2sigma2";
    Float32 missing_value -9999.0;
  }
  G2sigma3 {
    Float32 actual_range 11.29, 42.948;
    String long_name "G2sigma3";
    Float32 missing_value -9999.0;
  }
  G2sigma4 {
    Float32 actual_range 15.48, 47.332;
    String long_name "G2sigma4";
    Float32 missing_value -9999.0;
  }
  G2gamma {
    Int16 actual_range -8, 29;
    String long_name "G2gamma";
    Int16 missing_value -9999;
  }
  G2oxygen {
    Float32 actual_range -1.54, 712.9;
    String long_name "G2oxygen";
    Float32 missing_value -9999.0;
  }
  G2oxygenf {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2oxygenf";
  }
  G2oxygenqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2oxygenqc";
  }
  G2aou {
    Float32 actual_range -345.32, 327.13;
    String long_name "G2aou";
    Float32 missing_value -9999.0;
  }
  G2aouf {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2aouf";
  }
  G2nitrate {
    Float32 actual_range -1.3, 48.21;
    String long_name "Mole Concentration Of Nitrate In Sea Water";
    Float32 missing_value -9999.0;
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
  }
  G2nitratef {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "Mole Concentration Of Nitrate In Sea Water";
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
  }
  G2nitrateqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2nitrateqc";
  }
  G2nitrite {
    Float32 actual_range -0.195, 11.59;
    String long_name "Mole Concentration Of Nitrite In Sea Water";
    Float32 missing_value -9999.0;
    String standard_name "mole_concentration_of_nitrite_in_sea_water";
  }
  G2nitritef {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "Mole Concentration Of Nitrite In Sea Water";
    String standard_name "mole_concentration_of_nitrite_in_sea_water";
  }
  G2silicate {
    Float32 actual_range -2.02, 241.95;
    String long_name "Mass Concentration Of Silicate In Sea Water";
    Float32 missing_value -9999.0;
    String standard_name "mass_concentration_of_silicate_in_sea_water";
  }
  G2silicatef {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "Mass Concentration Of Silicate In Sea Water";
    String standard_name "mass_concentration_of_silicate_in_sea_water";
  }
  G2silicateqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2silicateqc";
  }
  G2phosphate {
    Float32 actual_range -0.2142, 6.879;
    String long_name "Mass Concentration Of Phosphate In Sea Water";
    Float32 missing_value -9999.0;
    String standard_name "mass_concentration_of_phosphate_in_sea_water";
  }
  G2phosphatef {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "Mass Concentration Of Phosphate In Sea Water";
    String standard_name "mass_concentration_of_phosphate_in_sea_water";
  }
  G2phosphateqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2phosphateqc";
  }
  G2tco2 {
    Float32 actual_range 310.5, 2651.2;
    String long_name "G2tco2";
    Float32 missing_value -9999.0;
  }
  G2tco2f {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2tco2f";
  }
  G2tco2qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2tco2qc";
  }
  G2talk {
    Float32 actual_range 284.3, 2647.3;
    String long_name "G2talk";
    Float32 missing_value -9999.0;
  }
  G2talkf {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2talkf";
  }
  G2talkqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2talkqc";
  }
  G2fco2 {
    Int16 actual_range 21, 22747;
    String long_name "G2fco2";
    Int16 missing_value -9999;
  }
  G2fco2f {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2fco2f";
  }
  G2fco2temp {
    Int16 actual_range 20, 20;
    String long_name "G2fco2temp";
    Int16 missing_value -9999;
  }
  G2phts25p0 {
    Int16 actual_range 6, 9;
    String long_name "G2PHTS25P0";
    Int16 missing_value -9999;
  }
  G2phts25p0f {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2PHTS25P0F";
  }
  G2phtsinsitutp {
    Int16 actual_range 6, 9;
    String long_name "G2phtsinsitutp";
    Int16 missing_value -9999;
  }
  G2phtsinsitutpf {
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String long_name "G2phtsinsitutpf";
  }
  G2phtsqc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2PHTSQC";
  }
  G2cfc11 {
    Float32 actual_range -0.137, 9.98;
    String long_name "G2CFC11";
    Float32 missing_value -9999.0;
  }
  G2pcfc11 {
    Float32 actual_range -4.8649, 462.1;
    String long_name "G2PCFC11";
    Float32 missing_value -9999.0;
  }
  G2cfc11f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2CFC11F";
  }
  G2cfc11qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2CFC11QC";
  }
  G2cfc12 {
    Float32 actual_range -0.07, 6.224;
    String long_name "G2CFC12";
    Float32 missing_value -9999.0;
  }
  G2pcfc12 {
    Float32 actual_range -10.754, 1601.4;
    String long_name "G2PCFC12";
    Float32 missing_value -9999.0;
  }
  G2cfc12f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2CFC12F";
  }
  G2cfc12qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2CFC12QC";
  }
  G2cfc113 {
    Float32 actual_range -0.073, 2.7;
    String long_name "G2CFC113";
    Float32 missing_value -9999.0;
  }
  G2pcfc113 {
    Float32 actual_range -11.474, 273.05;
    String long_name "G2PCFC113";
    Float32 missing_value -9999.0;
  }
  G2cfc113f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2CFC113F";
  }
  G2cfc113qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2CFC113QC";
  }
  G2ccl4 {
    Float32 actual_range -0.243, 17.327;
    String long_name "G2CCL4";
    Float32 missing_value -9999.0;
  }
  G2pccl4 {
    Float32 actual_range -10.101, 691.42;
    String long_name "G2PCCL4";
    Float32 missing_value -9999.0;
  }
  G2ccl4f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2CCL4F";
  }
  G2ccl4qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2CCL4QC";
  }
  G2sf6 {
    Int16 actual_range 0, 7;
    String long_name "G2SF6";
    Int16 missing_value -9999;
  }
  G2psf6 {
    Int16 actual_range 0, 22;
    String long_name "G2PSF6";
    Int16 missing_value -9999;
  }
  G2sf6f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2SF6F";
  }
  G2c13 {
    Int16 actual_range -6, 3;
    String long_name "G2C13";
    Int16 missing_value -9999;
  }
  G2c13f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2C13F";
  }
  G2c13qc {
    String _Unsigned "false";
    Byte actual_range 0, 1;
    String long_name "G2C13QC";
  }
  G2c14 {
    Int16 actual_range -268, 206;
    String long_name "G2C14";
    Int16 missing_value -9999;
  }
  G2c14f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2C14F";
  }
  G2c14err {
    Int16 actual_range -9, 72;
    String long_name "G2c14err";
    Int16 missing_value -9999;
  }
  G2h3 {
    Float32 actual_range -0.18, 70.29;
    String long_name "G2H3";
    Float32 missing_value -9999.0;
  }
  G2h3f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2H3F";
  }
  G2h3err {
    Int16 actual_range -1, 15;
    String long_name "G2h3err";
    Int16 missing_value -9999;
  }
  G2he3 {
    Int16 actual_range -15, 51;
    String long_name "G2he3";
    Int16 missing_value -9999;
  }
  G2he3f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2he3f";
  }
  G2he3err {
    Int16 actual_range 0, 90;
    String long_name "G2he3err";
    Int16 missing_value -9999;
  }
  G2he {
    Int16 actual_range -1, 26;
    String long_name "G2he";
    Int16 missing_value -9999;
  }
  G2hef {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2hef";
  }
  G2heerr {
    Int16 actual_range 0, 39;
    String long_name "G2heerr";
    Int16 missing_value -9999;
  }
  G2neon {
    Int16 actual_range 0, 24;
    String long_name "G2neon";
    Int16 missing_value -9999;
  }
  G2neonf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2neonf";
  }
  G2neonerr {
    Int16 actual_range -7, 80;
    String long_name "G2neonerr";
    Int16 missing_value -9999;
  }
  G2o18 {
    Float32 actual_range -19.7, 12.456;
    String long_name "G2o18";
    Float32 missing_value -9999.0;
  }
  G2o18f {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2o18f";
  }
  G2toc {
    Int16 actual_range 28, 506;
    String long_name "G2toc";
    Int16 missing_value -9999;
  }
  G2tocf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2tocf";
  }
  G2doc {
    Int16 actual_range 23, 423;
    String long_name "G2doc";
    Int16 missing_value -9999;
  }
  G2docf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2docf";
  }
  G2don {
    Int16 actual_range 1, 606;
    String long_name "G2don";
    Int16 missing_value -9999;
  }
  G2donf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2donf";
  }
  G2tdn {
    Int16 actual_range 1, 53;
    String long_name "G2TDN";
    Int16 missing_value -9999;
  }
  G2tdnf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2TDNF";
  }
  G2chla {
    Int16 actual_range 0, 48;
    String long_name "G2chla";
    Int16 missing_value -9999;
  }
  G2chlaf {
    String _Unsigned "false";
    Byte actual_range 2, 9;
    String long_name "G2chlaf";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String citation 
"Olsen, A., R. M. Key, S. van Heuven, S. K. Lauvset, A. Velo, X. Lin, C. Schirnick, A. Kozyr, T. Tanhua, M. Hoppema, S. Jutterström, R. Steinfeldt, E. Jeansson, M. Ishii, F. F. Pérez and T. Suzuki. The Global Ocean Data Analysis Project version 2 (GLODAPv2) - an internally consistent data product for the world ocean, Earth Syst. Sci. Data, 8, 297-323, 2016, doi:10.5194/essd-8-297-2016; 
        Key, R.M., A. Olsen, S. van Heuven, S. K. Lauvset, A. Velo, X. Lin, C. Schirnick, A. Kozyr, T. Tanhua, M. Hoppema, S. Jutterström, R. Steinfeldt, E. Jeansson, M. Ishi, F. F. Perez, and T. Suzuki. 2015. Global Ocean Data Analysis Project, Version 2 (GLODAPv2), ORNL/CDIAC-162, ND-P093. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee. doi:10.3334/CDIAC/OTG.NDP093_GLODAPv2";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "GLODAP";
    String creator_type "institution";
    String creator_url "https://www.glodap.info/";
    Float64 Easternmost_Easting 180.0;
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -78.638;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 180.0;
    Float64 geospatial_lon_min -180.0;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-04-26T04:41:07Z (local files)
2024-04-26T04:41:07Z https://erddap.emodnet-physics.eu/tabledap/GLODAPv2_2021.das";
    String infoUrl "https://www.glodap.info/";
    String institution "GLODAP";
    String keywords "analysis, chemistry, concentration, data, density, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Ocean Chemistry > Silicate, Earth Science > Oceans > Salinity/Density > Salinity, g2aou, g2aouf, g2bottle, g2bottomdepth, g2c13, g2c13f, g2c13qc, g2c14, g2c14err, g2c14f, g2cast, g2ccl4, g2ccl4f, g2ccl4qc, g2cfc11, g2cfc113, g2cfc113f, g2cfc113qc, g2cfc11f, g2cfc11qc, g2cfc12, g2cfc12f, g2cfc12qc, g2chla, g2chlaf, g2cruise, g2day, g2depth, g2doc, g2docf, g2don, g2donf, g2fco2, g2fco2f, g2fco2temp, g2gamma, g2h3, g2h3err, g2h3f, g2he, g2he3, g2he3err, g2he3f, g2heerr, g2hef, g2hour, g2maxsampdepth, g2minute, g2month, g2neon, g2neonerr, g2neonf, G2nitrate, G2nitratef, g2nitrateqc, G2nitrite, G2nitritef, g2o18, g2o18f, g2oxygen, g2oxygenf, g2oxygenqc, g2pccl4, g2pcfc11, g2pcfc113, g2pcfc12, G2phosphate, G2phosphatef, g2phosphateqc, g2phts25p0, g2phts25p0f, g2phtsinsitutp, g2phtsinsitutpf, g2phtsqc, g2pressure, g2psf6, g2region, G2salinity, G2salinityf, g2salinityqc, g2sf6, g2sf6f, g2sigma0, g2sigma1, g2sigma2, g2sigma3, g2sigma4, G2silicate, G2silicatef, g2silicateqc, g2station, g2talk, g2talkf, g2talkqc, g2tco2, g2tco2f, g2tco2qc, g2tdn, g2tdnf, g2temperature, g2theta, g2toc, g2tocf, g2year, global, glodap, latitude, longitude, mass, mass_concentration_of_phosphate_in_sea_water, mass_concentration_of_silicate_in_sea_water, mole, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nitrate, nitrite, no3, ocean, oceans, phosphate, po4, practical, project, salinity, sea, sea_water_practical_salinity, seawater, silicate, v2.2021, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Creative Commons Attribution Share-Alike http://www.opendefinition.org/licenses/cc-by-sa";
    Float64 Northernmost_Northing 90.0;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -78.638;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "G2cruise,G2region,G2station";
    String summary "The Global Ocean Data Analysis Project (GLODAP) is a synthesis activity for ocean surface to bottom biogeochemical data collected through chemical analysis of water samples. Data for 12 core variables (salinity, oxygen, phosphate, nitrate, silicate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113 and CCl4) are subjected to primary and secondary quality control to identify outliers and correct for measurement biases.";
    String time_coverage_end "2020-01-22T04:29:00Z";
    String time_coverage_start "1972-07-24T00:00:00Z";
    String title "Global Ocean Data Analysis Project (GLODAP) v2.2021";
    Float64 Westernmost_Easting -180.0;
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

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.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

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.