ERDDAP
Easier access to data
Easier access to data
| Dataset Title: | Operational Hydrodynamic Prediction System (OHPS) : River Current | Système de simulation hydrodynamique opérationnelle (SHOP) : Courant fluvial 
|
| Institution: | Environment and Climate Change Canada (Dataset ID: ecccShopNautilo) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Files
| Make a graph
|
Attributes {
time {
UInt32 _ChunkSizes 49;
String _CoordinateAxisType "Time";
Float64 actual_range 1.786968e+9, 1.7871408e+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 45.25651135537644, 47.54866736939348;
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 -74.47075597623737, -70.00782493283515;
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";
}
x_velocity {
Float64 colorBarMaximum 1.0;
Float64 colorBarMinimum -1.0;
String colorBarPalette "KT_curl";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0336/";
}
y_velocity {
Float64 colorBarMaximum 1.0;
Float64 colorBarMinimum -1.0;
String colorBarPalette "KT_curl";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0337/";
}
magnitude {
Float32 _FillValue NaN;
Float64 colorBarMaximum 2.5;
Float64 colorBarMinimum 0.0;
String colorBarPalette "KT_curl";
String comment "Computed by SLGO from current velocities x and y";
String description "Speed component of the sea water velocity";
String ioos_category "Currents";
String long_name "Magnitude of seawater velocity";
String short_name "magnitude";
String standard_name "sea_water_speed";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0334/";
String units "m s-1";
}
direction {
Float32 _FillValue NaN;
Float64 colorBarMaximum 360.0;
Float64 colorBarMinimum 0.0;
String colorBarPalette "KT_balance";
String comment "Computed by SLGO from current velocities x and y";
String description "Direction component of the sea water velocity. Measurements are positive clockwise from north.";
String ioos_category "Currents";
String long_name "Direction of seawater velocity";
String short_name "direction";
String standard_name "sea_water_velocity_to_direction";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/5D4D7YMF/";
String units "degree";
}
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_ohps/readme_ohps_en/";
String data_source "Meteorological Service of Canada: Operational Hydrodynamic Prediction System (OHPS)";
String dataset_status "OnGoing";
Float64 Easternmost_Easting -70.00782493283515;
Float64 geospatial_lat_max 47.54866736939348;
Float64 geospatial_lat_min 45.25651135537644;
Float64 geospatial_lat_resolution 8.492612130481803e-4;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -70.00782493283515;
Float64 geospatial_lon_min -74.47075597623737;
Float64 geospatial_lon_resolution 0.0012400475252576332;
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
"Files created from the combinaison of georeferenced .nc files interpolate on a regular grid by SLGO on 2025-08-12T14:24:24Z
2026-08-18T00:41:25Z (local files)
2026-08-18T00:41:25Z http://erddap.cioos.ca/erddap/griddap/ecccShopNautilo.das";
String infoUrl "https://eccc-msc.github.io/open-data/msc-data/nwp_ohps/readme_ohps_en/";
String institution "Environment and Climate Change Canada";
String institution_fr "Environnement et Changement Climatique Canada";
String keywords "surface currents";
String keywords_fr "courants de surface";
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 "St. Lawrence River";
String marine_region_identifier "http://marineregions.org/mrgid/23551";
Float64 Northernmost_Northing 47.54866736939348;
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 resolution "100 m";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 45.25651135537644;
String standard_name_vocabulary "CF Standard Name Table v86";
String summary "OHPS data produced by Environment and Climate Change Canada.";
String summary_fr "Données du modèle SHOP produites par Environnement et Changement Climatique Canada.";
String testOutOfDate "now+1day";
String time_coverage_end "2026-08-19T12:00:00Z";
String time_coverage_start "2026-08-17T12:00:00Z";
String title "Operational Hydrodynamic Prediction System (OHPS) : River Current | Système de simulation hydrodynamique opérationnelle (SHOP) : Courant fluvial";
Float64 Westernmost_Easting -74.47075597623737;
}
}
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.
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.