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Dataset Title:  Topography, NOAA Coastal Relief Model, 3 arc second, Vol. 4 (Central Gulf of
Mexico)
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Institution:  NOAA NGDC   (Dataset ID: usgsCeCrm4)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 latitude (degrees_north) ?      13201    -8.333333E-4 (even)
  < slider >
 longitude (degrees_east) ?      8401    8.333333E-4 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 topo (Topography, meters) ?

File type: (more info)

(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 {
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 24.0, 35.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -94.0, -87.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  topo {
    Float32 _FillValue -9999.0;
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "Topography";
    String grid_mapping "GDAL_Geographics";
    String ioos_category "Location";
    String long_name "Topography";
    String standard_name "altitude";
    String units "meters";
  }
  NC_GLOBAL {
    String AREA_OR_POINT "Area";
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "Barry.Eakins@noaa.gov";
    Float64 Easternmost_Easting -87.0;
    Float64 geospatial_lat_max 35.0;
    Float64 geospatial_lat_min 24.0;
    Float64 geospatial_lat_resolution 8.333333333333334e-4;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -87.0;
    Float64 geospatial_lon_min -94.0;
    Float64 geospatial_lon_resolution 8.333333333333334e-4;
    String geospatial_lon_units "degrees_east";
    String history 
"Mon Apr 28 13:01:57 2008: ncrename crm_vol4.nc -d x,lon -d y,lat -v Band1,topo
2018-02-21T11:19:01Z http://geoport.whoi.edu/thredds/dodsC/bathy/crm_vol4.nc
2018-02-21T11:19:01Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/usgsCeCrm4.das";
    String infoUrl "https://www.ngdc.noaa.gov/mgg/coastal/coastal.html";
    String institution "NOAA NGDC";
    String keywords "altitude, arc, atmosphere, bathymetry, central, coastal, earth science, Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry, gulf, gulf of mexico, height, mexico, model, ngdc, noaa, oceans, relief, second, station, topography, vol.";
    String keywords_vocabulary "GCMD Science Keywords";
    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 "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 35.0;
    String references "Divins, D.L., and D. Metzger, NGDC Coastal Relief Model, https://www.ngdc.noaa.gov/mgg/coastal/coastal.html";
    String sourceUrl "http://geoport.whoi.edu/thredds/dodsC/bathy/crm_vol4.nc";
    Float64 Southernmost_Northing 24.0;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "This Coastal Relief Gridded database provides the first comprehensive view of the US Coastal Zone; one that extends from the coastal state boundaries to as far offshore as the NOS hydrographic data will support a continuous view of the seafloor. In many cases, this seaward limit reaches out to, and in places even beyond the continental slope. The gridded database contains data for the entire coastal zone of the conterminous US, including Hawaii and Puerto Rico.";
    String title "Topography, NOAA Coastal Relief Model, 3 arc second, Vol. 4 (Central Gulf of Mexico)";
    Float64 Westernmost_Easting -94.0;
  }
}

 

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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