Data Access Form

Dataset Title:	COAMPS Surface Fields Grid
Institution:	Naval Research Laboratory, Monterey Marine Meteorology Division (Dataset ID: nrlCOAMPS3kmGrid)
Information:	Summary \| License \| Metadata \| Background \| Make a graph

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Dimensions	Size	Spacing
lat (count)	319	1.0 (even)

lon (count)	220	1.0 (even)

Grid Variables (which always also download all of the dimension variables)

lat_coamps (Latitude, degrees_north)

lon_coamps (Longitude, degrees_east)

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 {
  lat {
    Int32 actual_range 0, 318;
    String ioos_category "Location";
    String long_name "Lat";
    String units "count";
  }
  lon {
    Int16 actual_range 0, 219;
    String ioos_category "Location";
    String long_name "Lon";
    String units "count";
  }
  lat_coamps {
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  lon_coamps {
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String fileid "none";
    String history 
"Mon Jul  2 15:16:34 2012: ncks -d time,0,719 all_template-n-save2.nc all_template-n-save.nc
Mon Jun 18 18:34:07 2012: ncatted -O -along_name,time,o,c,Days since 2009-01-01 00 UTC all_template-n-save2.nc
Mon Jun 11 10:51:17 2012: ncatted -along_name,time,o,c,Days since 2009-01-01, 00 UTC coamps_sfc_3km_jan2012.nc
Sat Jun  9 08:54:31 2012: ncks -d time,0,743 all_template-n-save.nc all_template-month.nc
Fri Jun  8 20:26:40 2012: ncatted -O -along_name,time,o,c,Days since 00 UTC on the first day of the month and year in the filename all_template-n-save.nc
none
2026-02-18T06:24:05Z https://oceanview.pfeg.noaa.gov/thredds/dodsC/Model/COAMPS/sfc_3km_gap_free
2026-02-18T06:24:05Z https://coastwatch.pfeg.noaa.gov/erddap/griddap/nrlCOAMPS3kmGrid.das";
    String infoUrl "https://www.nrlmry.navy.mil/coamps-web/web/home";
    String institution "Naval Research Laboratory, Monterey Marine Meteorology Division";
    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.";
    Int32 nco_openmp_thread_number 1;
    String sourceUrl "https://oceanview.pfeg.noaa.gov/thredds/dodsC/Model/COAMPS/sfc_3km_gap_free";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "COAMPS Surface Fields Grid";
    String title "COAMPS Surface Fields Grid";
    String type "COAMPS";
  }
}

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.

(easy) You can get data by using the dataset's Data Access Form. It makes 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.

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.