Un accès facilité aux données scientifiques
Présenté par NOAA NMFS SWFSC ERD
|
ERDDAP
Un accès facilité aux données scientifiques |
Présenté par NOAA NMFS SWFSC ERD |
| Titre de l'ensemble de données: | POLY4 Chlorophyll-a MODIS-Aqua Data in the Northwest Atlantic, 2002-2023
|
| Institution: | dfo_bio (ID de l'ensemble de données: bio_remote_sensing_modis_aqua_chl_poly4) |
| Information: | Résumé
| Licence
| FGDC
| ISO 19115
| Métadonnées
| Arrière-plan
| Des dossiers
| Faire un graphique
|
Attributes {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.0257408e+9, 1.7039808e+9;
String axis "T";
String ioos_category "Time";
String long_name "Time";
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 39.020833333333336, 81.97916666666667;
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 actual_range -94.97916666666667, -42.020833333333336;
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
}
chlor_a {
Float32 _FillValue NaN;
Float64 colorBarMaximum 30.0;
Float64 colorBarMinimum 0.03;
String colorBarScale "Log";
String ioos_category "Ocean Color";
String long_name "Chlorophyll-a Concentration (POLY4v2 model with coefficients optimized to MODIS-AQUA and Northwest Atlantic)";
String standard_name "mass_concentration_of_chlorophyll_a_in_sea_water";
String units "mg m-3";
Float32 valid_max 100.0;
Float32 valid_min 0.0;
}
NC_GLOBAL {
String cdm_data_type "Grid";
String Conventions "CF-1.6, COARDS, ACDD-1.3";
String creator_email "Stephanie.Clay@dfo-mpo.gc.ca";
String creator_group "SOPhyE (Satellite Ocean colour and Phytoplankton Ecology group), Ocean Monitoring and Modelling Section";
String creator_name "Stephanie Clay";
String creator_type "person";
String creator_url "https://bio-rsg.github.io/";
String date_created "2002-07-04";
String date_modified "2025-01-28";
Float64 Easternmost_Easting -42.020833333333336;
String geographic_crs_epsg_code "EPSG:4326";
Float64 geospatial_lat_max 81.97916666666667;
Float64 geospatial_lat_min 39.020833333333336;
Float64 geospatial_lat_resolution 0.04166666666666667;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -42.020833333333336;
Float64 geospatial_lon_min -94.97916666666667;
Float64 geospatial_lon_resolution 0.04166666666666667;
String geospatial_lon_units "degrees_east";
String history
"Created with make_mapped_netcdf.R. Input data are 4km-resolution level-3 binned remote sensing reflectances (Rrs) from NASA OBPG, subset to the region of interest and used in conjunction with the most recent set of regionally-tuned parameters to generate the level-3 binned product. The data are then mapped to a Plate Carrée projection using a nearest-neighbour method implemented in bin_to_raster() from the oceancolouR R package.
2025-10-30T19:13:37Z (local files)
2025-10-30T19:13:37Z https://cioosatlantic.ca/erddap/fr/griddap/bio_remote_sensing_modis_aqua_chl_poly4.das";
String infoUrl "https://bio-rsg.github.io/";
String institution "dfo_bio";
String keywords "agencies, agencies-non-us, aqua, atlantic, based, bio, ca/dfo/bio, canada, chemistry, chl, chlor_a, chlorophyll, chlorophyll-a, coefficients, color, concentration, data, department, dfo, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Pigments > Chlorophyll, Earth Science > Oceans > Ocean Optics > Chlorophyll > Chlorophyll Concentration, fisheries, government, imaging, latitude, longitude, mass, mass_concentration_of_chlorophyll_a_in_sea_water, model, moderate, modis, modis-aqua, non, northwest, nwa, observation, ocean, ocean color, oceans, optics, optimized, pigments, platforms, Platforms > Space-based Platforms > Earth Observation Satellites > Aqua, poly4, poly4v2, providers, Providers > GOVERNMENT AGENCIES-NON-US > CANADA > CA/DFO/BIO, resolution, satellites, science, sea, seawater, space, space-based, spectroradiometer, time, water, with";
String keywords_vocabulary "GCMD Science Keywords";
String license "https://creativecommons.org/licenses/by/4.0/";
String map_projection "Equidistant Cylindrical (Plate Carrée)";
String mission "AQUA";
Float64 Northernmost_Northing 81.97916666666667;
String platform "AQUA";
String POLY4v2_coefficients "0.49318,-3.86911,-0.83267,1.19094,0.9436";
String processing_level "L3 Mapped";
String product_name "AQUA_MODIS.20231231.L3b.DAY.CHL_POLY4.NWA.mapped.nc";
String projected_crs_epsg_code "EPSG:4087";
String references "Clay, S.; Peña, A.; DeTracey, B.; Devred, E. Evaluation of Satellite-Based Algorithms to Retrieve Chlorophyll-a Concentration in the Canadian Atlantic and Pacific Oceans. Remote Sens. 2019, 11, 2609.";
String region "Northwest Atlantic";
String reprocessing "R2022.0";
String sensor "MODIS";
String source "POLY4v2 chlorophyll-a generated using remote sensing reflectance (Rrs) data from NASA Ocean Biology Processing Group (OBPG, https://oceancolor.gsfc.nasa.gov)";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 39.020833333333336;
String spatial_resolution "4.64 km at equator";
String standard_name_vocabulary "CF Standard Name Table v79";
String summary "NWA Moderate Resolution Imaging Spectroradiometer (MODIS)-AQUA CHL_POLY4";
String temporal_range "day";
String time "2023-12-31";
String time_coverage_end "2023-12-31T00:00:00Z";
String time_coverage_start "2002-07-04T00:00:00Z";
String title "POLY4 Chlorophyll-a MODIS-Aqua Data in the Northwest Atlantic, 2002-2023";
String tools "https://github.com/BIO-RSG/oceancolouR";
Float64 Westernmost_Easting -94.97916666666667;
}
}
Protocole d'accès aux données (DAP ) et ses
contraintes de projection .
L'URL spécifie ce que vous souhaitez : l'ensemble de données, une description du graphique ou du sous-ensemble de données et le type de fichier pour la réponse.
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.
