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Dataset Title:  Gulf of America Absolute Dynamic Topography daily average data 2024 Subscribe RSS
Institution:  CLS, CNES   (Dataset ID: SSH_GoA_2024)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      31    1 day (even)
  < slider >
 latitude (degrees_north) ?      120    0.125 (even)
  < slider >
 longitude (degrees_east) ?      160    0.125 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 adt (Absolute dynamic topography, m) ?

File type: (more information)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.7330112e+9, 1.7356032e+9;
    String axis "T";
    String calendar "gregorian";
    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 17.0625, 31.9375;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String unit_long "Degrees North";
    String units "degrees_north";
    Float32 valid_max 89.9375;
    Float32 valid_min -89.9375;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -98.9375, -79.0625;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String unit_long "Degrees East";
    String units "degrees_east";
  }
  adt {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String comment "The absolute dynamic topography is the sea surface height above geoid; the adt is obtained as follows: adt=sla+mdt where mdt is the mean dynamic topography; see the product user manual for details";
    String ioos_category "Sea Level";
    String long_name "Absolute dynamic topography";
    String standard_name "sea_surface_height_above_geoid";
    String units "m";
  }
  NC_GLOBAL {
    String acknowledgment "E.U. Copernicus Marine Service Information; https://doi.org/10.48670/moi-00148";
    String cdm_data_type "Grid";
    String comment "Sea Surface Height measured by Altimetry and derived variables";
    String contact "servicedesk.cmems@mercator-ocean.eu";
    String contributor_country "USA";
    String contributor_email "leben@colorado.edu";
    String contributor_institution "Colorado Center for Astrodynamics Research";
    String contributor_name "Robert Leben";
    String contributor_role "mediator";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String contributor_url "https://www.colorado.edu/ccar/robert-leben";
    String Conventions "CF-1.11, COARDS, ACDD-1.3, IOOS-1.2";
    String creator_country "European Union";
    String creator_email "servicedesk.cmems@mercator-ocean.eu";
    String creator_institution "CLS, CNES";
    String creator_name "CLS, CNES";
    String creator_sector "other";
    String creator_type "institution";
    String creator_url "http://marine.copernicus.eu";
    Float64 Easternmost_Easting -79.0625;
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 31.9375;
    Float64 geospatial_lat_min 17.0625;
    Float64 geospatial_lat_resolution 0.125;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -79.0625;
    Float64 geospatial_lon_min -98.9375;
    Float64 geospatial_lon_resolution 0.125;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-28 01:30:30Z: Creation
2025-02-22T22:44:21Z (local files)
2025-02-22T22:44:21Z https://gcoos5.geos.tamu.edu/erddap/griddap/SSH_GoA_2024.das";
    String id "SSH_GoA_2024";
    String infoUrl "http://marine.copernicus.eu";
    String institution "CLS, CNES";
    String instrument "radar altimeter";
    String instrument_vocabulary "GCMD Science Keywords Version 9.1.5";
    String keywords "above, absolute, adt, all, centre, cls, cnes, collecte, data, derived, duacs, dynamic, earth, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, Earth Science > Solid Earth > Geodetics/Gravity > Geoid Properties, etudes, geodetics, geoid, global, gravity, gridded, height, L4, latitude, localisation, longitude, merged, national, near, nrt, ocean, oceans, product, properties, real, satellites, science, sea, sea_surface_height_above_geoid, solid, spatiales, ssalto, ssh, surface, time, topography";
    String keywords_vocabulary "GCMD Science Keywords Version 9.1.5, CF Standard Names v72";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String naming_authority "Copernicus Marine Service";
    Float64 Northernmost_Northing 31.9375;
    String platform "satellites";
    String platform_name "multiple";
    String platform_vocabulary "https://mmisw.org/ont/ioos/platform";
    String publisher_country "USA";
    String publisher_email "data@gcoos.org";
    String publisher_institution "GCOOS";
    String publisher_name "GCOOS";
    String publisher_phone "+1-979-845-3900";
    String publisher_type "group";
    String publisher_url "https://gcoos.org";
    String references "http://marine.copernicus.eu";
    String source "Altimetry measurements";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 17.0625;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subset_datasetId "cmems_obs-sl_glo_phy-ssh_nrt_allsat-l4-duacs-0.125deg_P1D_202411";
    String subset_date "2025-01-07T14:18:16.899Z";
    String subset_productId "SEALEVEL_GLO_PHY_L4_NRT_008_046";
    String subset_source "ARCO data downloaded from the Marine Data Store using the MyOcean Data Portal";
    String summary "Gulf of America Sea Surface Height measured by satellite altimetry and derived variables";
    String testOutOfDate "now-98days";
    String time_coverage_end "2024-12-31T00:00:00Z";
    String time_coverage_start "2024-12-01T00:00:00Z";
    String title "Gulf of America Absolute Dynamic Topography daily average data 2024";
    Float64 Westernmost_Easting -98.9375;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
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