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 |
| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | M | files | POLY4 Chlorophyll-a OC-CCI Data in the Northwest Atlantic, 1997-Present | 
| F I M | background
| 
| 
| dfo_bio | bio_remote_sensing_occci_poly4 |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | cdm_data_type | String | Grid |
| attribute | NC_GLOBAL | Conventions | String | CF-1.10, COARDS, ACDD-1.3 |
| attribute | NC_GLOBAL | creator_email | String | Stephanie.Clay at dfo-mpo.gc.ca |
| attribute | NC_GLOBAL | creator_group | String | SOPhyE (Satellite Ocean colour and Phytoplankton Ecology group), Ocean Monitoring and Modelling Section |
| attribute | NC_GLOBAL | creator_name | String | Stephanie Clay |
| attribute | NC_GLOBAL | creator_type | String | person |
| attribute | NC_GLOBAL | creator_url | String | https://bio-rsg.github.io/ |
| attribute | NC_GLOBAL | date_created | String | 2025-07-29T13:57:57Z |
| attribute | NC_GLOBAL | Easternmost_Easting | double | -42.020833333333336 |
| attribute | NC_GLOBAL | geographic_crs_epsg_code | String | EPSG:4326 |
| attribute | NC_GLOBAL | geospatial_lat_max | double | 81.97916666666667 |
| attribute | NC_GLOBAL | geospatial_lat_min | double | 39.020833333333336 |
| attribute | NC_GLOBAL | geospatial_lat_resolution | double | 0.04166666666666667 |
| attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
| attribute | NC_GLOBAL | geospatial_lon_max | double | -42.020833333333336 |
| attribute | NC_GLOBAL | geospatial_lon_min | double | -94.97916666666667 |
| attribute | NC_GLOBAL | geospatial_lon_resolution | double | 0.04166666666666667 |
| attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
| attribute | NC_GLOBAL | history | String | Created with make_mapped_netcdf.R. Input data are 4km-resolution level-3 binned remote sensing reflectances (Rrs) from the OC-CCI multisensor product (www.oceancolour.org) generated by the Plymouth Marine Laboratory (PML) as part of the European Space Agency (ESA) climate change initiative. Rrs are subset to the region of interest and used in conjunction with the most recent set of regionally-tuned parameters to create 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. |
| attribute | NC_GLOBAL | infoUrl | String | https://bio-rsg.github.io/ |
| attribute | NC_GLOBAL | institution | String | dfo_bio |
| attribute | NC_GLOBAL | keywords | String | 2025-03-31, agencies, agencies-non-us, atlantic, based, bio, ca/dfo/bio, canada, cci, 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, latitude, longitude, mass, mass_concentration_of_chlorophyll_a_in_sea_water, model, multisensor, non, northwest, nwa, observation, oc-cci, occci, ocean, ocean color, oceans, optics, optimized, pigments, platforms, Platforms > Space-based Platforms > Earth Observation Satellites >, poly4, poly4v1, product, providers, Providers > GOVERNMENT AGENCIES-NON-US > CANADA > CA/DFO/BIO, satellites, science, sea, seawater, space, space-based, time, water, with |
| attribute | NC_GLOBAL | keywords_vocabulary | String | GCMD Science Keywords |
| attribute | NC_GLOBAL | license | String | https://creativecommons.org/licenses/by/4.0/ |
| attribute | NC_GLOBAL | map_projection | String | Equidistant Cylindrical (Plate Carrée) |
| attribute | NC_GLOBAL | mission | String | Multiple missions |
| attribute | NC_GLOBAL | Northernmost_Northing | double | 81.97916666666667 |
| attribute | NC_GLOBAL | platform | String | Multiple platforms |
| attribute | NC_GLOBAL | POLY4v1_coefficients | String | 0.59779,-3.15824,-0.80348,0.93129,0.78322 |
| attribute | NC_GLOBAL | processing_level | String | L3 Mapped |
| attribute | NC_GLOBAL | product_name | String | OCCCI.20250331.L3b.DAY.CHL_POLY4.NWA.mapped.nc |
| attribute | NC_GLOBAL | projected_crs_epsg_code | String | EPSG:4087 |
| attribute | NC_GLOBAL | references | String | doi:10.3390/s19194285; https://catalogue.ceda.ac.uk/uuid/690fdf8f229c4d04a2aa68de67beb733; doi:10.3390/rs11222609 |
| attribute | NC_GLOBAL | region | String | Northwest Atlantic |
| attribute | NC_GLOBAL | reprocessing | String | v6.0 |
| attribute | NC_GLOBAL | sensor | String | Multiple sensors |
| attribute | NC_GLOBAL | source | String | POLY4 chlorophyll-a created using remote sensing reflectance (Rrs) data from the OC-CCI multisensor product generated by the Plymouth Marine Laboratory (PML) as part of the European Space Agency (ESA) climate change initiative (www.oceancolour.org). |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | Southernmost_Northing | double | 39.020833333333336 |
| attribute | NC_GLOBAL | spatial_resolution | String | 4 km at equator |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v79 |
| attribute | NC_GLOBAL | summary | String | Chlorophyll-a concentration (Chl-a) is used as a proxy for phytoplankton biomass to track blooms and monitor the state of the ecosystem. This dataset contains daily satellite Chl-a since Sep 1997. The data is at a 4.64x4.64 km spatial resolution covering an area of the Northwest Atlantic from 39-82°N, 42-95°W. Regionally-tuned coefficients for POLY4 Chl-a (Clay et al., 2019, see resources) were obtained by matching level-3 gridded 1km-resolution satellite pixels to in situ HPLC (High Performance Liquid Chromatography) Chl-a samples within the region of interest. POLY4 Chl-a was then optimized by forcing the linear regression of POLY4 against HPLC to the 1:1 line to reduce the negative bias observed in higher concentrations in the default global Chl-a models. Daily Chl-a images were generated by applying the optimized POLY4 algorithm on level-3 binned remote sensing reflectance (Rrs) data from the OC-CCI multisensor product generated by the Plymouth Marine Laboratory (PML) as part of the European Space Agency (ESA) climate change initiative. The Chl-a data were then projected onto an Equidistant Cylindrical grid (4.64x4.64 km per pixel) using a nearest neighbour method. This model and the Northwest Atlantic coefficients are available in the R package oceancolouR (https://github.com/BIO-RSG/oceancolouR). |
| attribute | NC_GLOBAL | temporal_range | String | day |
| attribute | NC_GLOBAL | time | String | 2025-03-31 |
| attribute | NC_GLOBAL | time_coverage_end | String | 2025-03-31T00:00:00Z |
| attribute | NC_GLOBAL | time_coverage_start | String | 1997-09-04T00:00:00Z |
| attribute | NC_GLOBAL | title | String | POLY4 Chlorophyll-a OC-CCI Data in the Northwest Atlantic, 1997-Present |
| attribute | NC_GLOBAL | tools | String | https://github.com/BIO-RSG/oceancolouR |
| attribute | NC_GLOBAL | Westernmost_Easting | double | -94.97916666666667 |
| dimension | time | double | nValues=10027, evenlySpaced=false, averageSpacing=1 day 0h 6m 19s | |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 8.733312E8, 1.7433792E9 |
| attribute | time | axis | String | T |
| attribute | time | calendar | String | standard |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | Time |
| attribute | time | standard_name | String | time |
| attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
| attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
| dimension | latitude | double | nValues=1032, evenlySpaced=true, averageSpacing=-0.04166666666666667 | |
| attribute | latitude | _CoordinateAxisType | String | Lat |
| attribute | latitude | actual_range | double | 39.020833333333336, 81.97916666666667 |
| attribute | latitude | axis | String | Y |
| attribute | latitude | ioos_category | String | Location |
| attribute | latitude | long_name | String | Latitude |
| attribute | latitude | standard_name | String | latitude |
| attribute | latitude | units | String | degrees_north |
| dimension | longitude | double | nValues=1272, evenlySpaced=true, averageSpacing=0.04166666666666667 | |
| attribute | longitude | _CoordinateAxisType | String | Lon |
| attribute | longitude | actual_range | double | -94.97916666666667, -42.020833333333336 |
| attribute | longitude | axis | String | X |
| attribute | longitude | ioos_category | String | Location |
| attribute | longitude | long_name | String | Longitude |
| attribute | longitude | standard_name | String | longitude |
| attribute | longitude | units | String | degrees_east |
| variable | chlor_a | float | time, latitude, longitude | |
| attribute | chlor_a | _FillValue | float | NaN |
| attribute | chlor_a | colorBarMaximum | double | 30.0 |
| attribute | chlor_a | colorBarMinimum | double | 0.03 |
| attribute | chlor_a | colorBarScale | String | Log |
| attribute | chlor_a | ioos_category | String | Ocean Color |
| attribute | chlor_a | long_name | String | Chlorophyll-a Concentration (POLY4v1 model with coefficients optimized to OC-CCI multisensor product in the Northwest Atlantic) |
| attribute | chlor_a | standard_name | String | mass_concentration_of_chlorophyll_a_in_sea_water |
| attribute | chlor_a | units | String | mg m-3 |
| attribute | chlor_a | valid_max | float | 100.0 |
| attribute | chlor_a | valid_min | float | 0.0 |
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