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Dataset Title:  Products of the Regional Deterministic Wave Prediction System | Produits du
système régional de prévision déterministe de vague
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Institution:  Environment and Climate Change Canada   (Dataset ID: ecccRdwpsNautilo)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      49    1h 0m 0s (even)
  < slider >
 latitude (degrees_north) ?      501    -0.0225 (even)
  < slider >
 longitude (degrees_east) ?      801    0.0225 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 height (Waves height, m) ?
 direction (Direction of peak waves, degrees_true) ?
 period (Period of peak waves, s) ?

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 {
    UInt32 _ChunkSizes 49;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.7869464e+9, 1.7871192e+9;
    String axis "T";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/";
    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 41.988749999999996, 53.23875;
    String axis "Y";
    String description "Latitude coordinates in decimal degree (degrees north)";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -71.98875, -53.988749999999996;
    String axis "X";
    String description "Longitude coordinates in decimal degree (degrees east)";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0554/";
    String units "degrees_east";
  }
  height {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String colorBarPalette "KT_haline";
    String description "Significant height of combined wind waves and swell";
    String ioos_category "Surface Waves";
    String long_name "Waves height";
    String standard_name "sea_surface_wave_significant_height";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0385/";
    String units "m";
    String var_name "HTSGW";
  }
  direction {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String colorBarPalette "KT_curl";
    String ioos_category "Surface Waves";
    String long_name "Direction of peak waves";
    String standard_name "sea_surface_wave_from_direction";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0384/";
    String units "degrees_true";
    String var_name "WVDIR";
  }
  period {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String colorBarPalette "YellowRed";
    String description "Peak Period of Wind Waves";
    String long_name "Period of peak waves";
    String standard_name "sea_surface_period_of_highest_wave";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/OCVYVB2M/";
    String units "s";
    String var_name "PPERWW";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.12, COARDS ACDD-1.3";
    String creator_name "Environment and Climate Change Canada";
    String creator_url "https://eccc-msc.github.io/open-data/msc-data/nwp_rdwps/readme_rdwps_en/";
    String data_source "Environment and Climate Change Canada";
    String dataset_status "OnGoing";
    Float64 Easternmost_Easting -53.988749999999996;
    Float64 geospatial_lat_max 53.23875;
    Float64 geospatial_lat_min 41.988749999999996;
    Float64 geospatial_lat_resolution 0.022500000000000013;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -53.988749999999996;
    Float64 geospatial_lon_min -71.98875;
    Float64 geospatial_lon_resolution 0.0225;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_epsg_code "EPSG:4326";
    String grid_mapping_epsg_code_url "https://epsg.io/4326";
    String grid_mapping_geographic_crs_name "WGS 84";
    String grid_mapping_inverse_flattening "298.2572236";
    String grid_mapping_name "latitude_longitude";
    String grid_mapping_prime_meridian_name "Greenwich";
    String grid_mapping_semi_major_axis "6378137";
    String history 
"Metadata were standardized by the SLGO. Files created from georeferenced .grib2 files on 2025-05-23T17:19:57Z
2026-08-18T00:41:17Z (local files)
2026-08-18T00:41:17Z http://erddap.cioos.ca/erddap/griddap/ecccRdwpsNautilo.das";
    String infoUrl "https://eccc-msc.github.io/open-data/msc-data/nwp_rdwps/readme_rdwps_en/";
    String institution "Environment and Climate Change Canada";
    String institution_fr "Environnement et Changement Climatique Canada";
    String institution_identifier "https://ror.org/026ny0e17";
    String keywords "sea state, waves";
    String keywords_fr "vagues, état de la mer";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Environment and Climate Change Canada Data Servers End-use Licence";
    String licenseUrl "https://eccc-msc.github.io/open-data/licence/readme_en/";
    String marine_region "Gulf of Saint Lawrence";
    String marine_region_identifier "http://marineregions.org/mrgid/4290";
    Float64 Northernmost_Northing 53.23875;
    String platform "unknown";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String publisher_email "info@ogsl.ca";
    String publisher_name "St. Lawrence Global Observatory";
    String publisher_name_fr "Observatoire global du Saint-Laurent";
    String publisherID "https://ror.org/03wfagk22";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.988749999999996;
    String standard_name_vocabulary "CF Standard Name Table v86";
    String summary "RDWPS data produced by Environment and Climate Change Canada.";
    String summary_fr "données du modèle RDWPS produites par Environnement et Changement Climatique Canada.";
    String testOutOfDate "now+1day";
    String time_coverage_end "2026-08-19T06:00:00Z";
    String time_coverage_start "2026-08-17T06:00:00Z";
    String title "Products of the Regional Deterministic Wave Prediction System | Produits du système régional de prévision déterministe de vague";
    Float64 Westernmost_Easting -71.98875;
  }
}

 

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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