Data Access Form

Dataset Title:	Global NCOM for the Gulf of Mexico, 2D aggregation
Dataset ID:	NCOM_gulf_of_mexico_2d_agg
Institution:	Naval Oceanographic Office
Information:	Summary \| Variables \| Background \| Make A Graph

Dimensions	Size	Spacing
time (forecast time coordinate, UTC)	1738	03:12:20 (uneven)

latitude (degrees_north)	241	0.125 (even)

longitude (degrees_east)	337	0.125 (even)

Grid Variables (which always also download all of the dimension variables)
surf_el (Water Surface Elevation, meters)

File type:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.2642048e+9, 1.2842496e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "forecast time coordinate";
    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";
    Float64 actual_range 8.0, 38.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    Int32 NAVO_code 1;
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 262.0, 304.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    Int32 NAVO_code 2;
    String standard_name "longitude";
    String units "degrees_east";
  }
  surf_el {
    Float32 _FillValue -30000.0;
    String coordinates "lon lat time ";
    String ioos_category "Other";
    String long_name "Water Surface Elevation";
    Int32 NAVO_code 32;
    String units "meters";
  }
  NC_GLOBAL {
    String _CoordinateModelBaseDate "2010-01-23T00:00:00Z";
    String cdm_data_type "Grid";
    String classification_authority "not applicable";
    String classification_level "UNCLASSIFIED";
    String comment "...";
    String contact "NAVO, N33";
    String Conventions "Global NCOM";
    String distribution_statement "Approved for public release. Distribution unlimited.";
    String downgrade_date "not applicable";
    String generating_model "Global NCOM";
    String history 
"created on 20100907; Synthetic dataset from TDS fmrc (best) aggregation, 
original data from ncom_gomex_agg
2010-09-09 http://edac-dap.northerngulfinstitute.org/thredds/dodsC/ncom_
gomex_agg/NCOM_Gulf_of_Mexico_Aggregation_best.ncd
2010-09-09 http://edac-dap2.northerngulfinstitute.org/erddap/griddap/NCOM_
gulf_of_mexico_2d_agg.das";
    String infoUrl 
"http://edac-dap.northerngulfinstitute.org/thredds/catalog/ncom_gomex_agg/
catalog.html?dataset=ncom_gomex_agg/NCOM_Gulf_of_Mexico_Aggregation_best.ncd";
    String input_data_source "FNMOC NOGAPS, NAVO MODAS, NAVO NLOM";
    String institution "Naval Oceanographic Office";
    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 message "UNCLASSIFIED";
    String model_type "x-curvilinear lon, y-curvilinear lat, z-sigma_z";
    String operational_status "development";
    String reference "https://www.navo.navy.mil/";
    String sourceUrl 
"http://edac-dap.northerngulfinstitute.org/thredds/dodsC/ncom_gomex_agg/NCOM_
Gulf_of_Mexico_Aggregation_best.ncd";
    String standard_name_vocabulary "CF-1.0";
    String summary 
"Global NCOM for the Gulf of Mexico, 2-dimensional time series fields from 
the best time series aggregation.";
    String title "Global NCOM for the Gulf of Mexico, 2D aggregation";
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request gridded data (for example, environmental data from satellites) and graphs of gridded data, via specially formed URLs.
The URLs specify everything: the dataset, the desired file type for the response, and the subset of data that you want to receive.
You can form these URLs by hand or with a computer program,
or (much easier) you can use the dataset's "Data Access Form" (oriented to requests for data)
or the dataset's "Make A Graph" form (oriented to requests for graphs and maps),
both of which generate the URL when the form is submitted.
griddap is a superset of the OPeNDAP DAP hyperslab protocol.

griddap request URLs must be in the form
http://edac-dap2.northerngulfinstitute.org/erddap/griddap/ datasetID fileType {?query}
For example,
http://edac-dap2.northerngulfinstitute.org/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]

For details, see the griddap Documentation.

ERDDAP Version 1.22

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