ERDDAP > griddap > Data Access Form

Dataset Title:	HRDPS, Salish Sea, Atmospheric Forcing Grid, Geo-location, v1
Institution:	UBC EOAS   (Dataset ID: ubcSSaAtmosphereGridV1)
Information:	Summary | License | Metadata | Background | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
gridY (m)				266	2500.0 (even)
gridX (m)				256	2500.0 (even)

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

longitude (degrees_east)

latitude (degrees_north)

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .graph - View a Make A Graph web page. .help - View a web page with a description of griddap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

(Documentation / Bypass this form)
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  gridY {
    UInt32 _ChunkSizes 266;
    Float64 actual_range 0.0, 662500.0;
    Float64 grid_spacing 2500.0;
    String ioos_category "location";
    String long_name "Y Coordinate of Projection";
    String standard_name "projection_y_coordinate";
    String units "m";
  }
  gridX {
    UInt32 _ChunkSizes 256;
    Float64 actual_range 0.0, 637500.0;
    Float64 grid_spacing 2500.0;
    String ioos_category "location";
    String long_name "X Coordinate of Projection";
    String standard_name "projection_x_coordinate";
    String units "m";
  }
  longitude {
    UInt32 _ChunkSizes 266, 256;
    String ioos_category "location";
    String long_name "Longitude";
    String units "degrees_east";
  }
  latitude {
    UInt32 _ChunkSizes 266, 256;
    String ioos_category "location";
    String long_name "Latitude";
    String units "degrees_north";
  }
  NC_GLOBAL {
    String acknowledgement "Environment and Climate Change Canada";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String coverage_content_type "modelResult";
    String creator_email "sallen@eaos.ubc.ca";
    String creator_name "SalishSeaCast Project Contributors";
    String creator_url "https://salishsea-meopar-docs.readthedocs.io/";
    String drawLandMask "over";
    Int32 GRIB2_grid_template 20;
    String history 
"[Mon Mar  7 10:07:34 2016] ncks -4 -L4 -O /results/forcing/atmospheric/GEM2.5/operational/ops_y2016m03d07.nc /results/forcing/atmospheric/GEM2.5/operational/ops_y2016m03d07.nc
    [Mon Mar  7 10:07:00 2016] created by wgrib2
2025-05-10T02:57:01Z (local files)
2025-05-10T02:57:01Z https://salishsea.eos.ubc.ca/erddap/griddap/ubcSSaAtmosphereGridV1.das";
    String infoUrl "https://salishsea.eos.ubc.ca/";
    String institution "UBC EOAS";
    String institution_fullname "Dept of Earth, Ocean & Atmospheric Sciences, University of British Columbia";
    String keywords "atmosphere, HRDPS, latitude, longitude, model results, polar-stereographic grid, Salish Sea";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The SalishSeaCast NEMO model results are copyright
by the SalishSeaCast Project Contributors and The University of British Columbia.

They are licensed under the Apache License, Version 2.0. http://www.apache.org/licenses/LICENSE-2.0

This dataset is derived from a product of the Environment and Climate Change Canada HRDPS
(High Resolution Deterministic Prediction System) model.
The Terms and conditions of use of Meteorological Data from Environment and Climate Change Canada
are available at http://dd.weather.gc.ca/doc/LICENCE_GENERAL.txt.";
    String NCO "4.4.2";
    String project "SalishSeaCast NEMO Model";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary 
"HRDPS, SalishSeaCast, Atmospheric Forcing Grid, Geo-location, v1

Longitude and latitude of the Environment and Climate Change Canada HRDPS West polar-stereographic model grid.
This is the model grid that was used for atmospheric forcing for the SalishSeaCast NEMO model between
2014-09-12 and 2023-02-22.
The model grid includes the Juan de Fuca Strait, the Strait of Georgia, Puget Sound,
and Johnstone Strait on the coasts of Washington State and British Columbia.

v1: longitude and latitude variables";
    String title "HRDPS, Salish Sea, Atmospheric Forcing Grid, Geo-location, v1";
  }
}

 

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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 Data Access Protocol (DAP) and its projection constraints.

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.

 

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