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ERDDAP > info > bio_remote_sensing_occci_nwa_poly4_spring_bloom

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 data       graph  M    files  Northwest Atlantic per-pixel spring bloom metrics derived from OC-CCI POLY4 satellite
Chlorophyll-a, 1998-present 		   ?   F   I   M   background (external link) RSS Subscribe dfo_bio bio_remote_sensing_occci_nwa_poly4_spring_bloom

The Dataset's Variables and Attributes

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/ (external link)
attribute NC_GLOBAL date_created String 2025-08-31T11:52:23Z
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 65.97916666666667
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 -75.97916666666667
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 map_and_write_to_netcdf.R. Input data were 4km-resolution spring bloom metrics and annual average chlorophyll-a (chl-a) concentration per bin. Bloom metrics for each bin and year were derived from a shifted gaussian curve fitted to the time series of daily logged chl-a data within that bin. Chl-a data were taken from the POLY4 chl-a dataset which was generated using remote sensing reflectances (Rrs) from the OC-CCI multisensor product (www.oceancolour.org) and regionally-tuned coefficients, and subsequently gap-filled using DINEOF (https://github.com/aida-alvera/DINEOF).
attribute NC_GLOBAL infoUrl String https://bio-rsg.github.io/ (external link)
attribute NC_GLOBAL institution String dfo_bio
attribute NC_GLOBAL keywords String agencies, agencies-non-us, amplitude, amplitude_real, annual_mean, average, based, between, bio, bloom, ca/dfo/bio, canada, chemistry, chl, chl-a, chlorophyll, chlorophyll-a, color, concentration, data, day, days, department, dfo, dineof, duration, during, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Pigments > Chlorophyll, Earth Science > Oceans > Ocean Optics > Chlorophyll > Chlorophyll Concentration, error, estimated, fisheries, fitted, gaussian, government, latitude, longitude, magnitude_real, mass, mass_concentration_of_chlorophyll_a_in_sea_water, maximum, mean, metrics, non, normalized, NRMSE_bloom, nwa, observation, occci, ocean, ocean color, oceans, optics, over, percent_dineof, percentage, period, phytoplankton, pigments, pixel, platforms, Platforms > Space-based Platforms > Earth Observation Satellites >, produced, providers, Providers > GOVERNMENT AGENCIES-NON-US > CANADA > CA/DFO/BIO, real, root, satellites, science, sea, seawater, space, space-based, spring, square, start, t_duration, t_start, time, total, using, values, water, with, year
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL map_projection String Equidistant Cylindrical (Plate Carrée)
attribute NC_GLOBAL mission String Multiple missions
attribute NC_GLOBAL Northernmost_Northing double 65.97916666666667
attribute NC_GLOBAL platform String Multiple platforms
attribute NC_GLOBAL POLY4_coefficients String 0.59779,-3.15824,-0.80348,0.93129,0.78322
attribute NC_GLOBAL processing_level String L4 Mapped
attribute NC_GLOBAL product_name String gaussian_fit_metrics_2024.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; Layton, C., Devred, E., DeTracey B.. 2022. A comparison of phytoplankton spring bloom fitting methods using MODIS satellite-derived chlorophyll-a concentration for the Maritimes region. Can. Tech. Rep. Hydrogr. Ocean Sci. 340: vii + 22 p.; Stephanie Clay, Chantelle Layton, & Emmanuel Devred. (2021). BIO-RSG/PhytoFit: First release (v1.0.0). Zenodo. https://doi.org/10.5281/zenodo.4770754; doi:10.1016/j.ocemod.2004.08.001
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 Spring bloom metrics and annual average chlorophyll-a (chl-a) derived from DINEOF-filled POLY4 chl-a. POLY4 chl-a were created using remote sensing reflectance (Rrs) data from the OC-CCI multisensor product, which were 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 4.64km at equator
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v79
attribute NC_GLOBAL summary String NWA OCCCI spring bloom metrics 2024
attribute NC_GLOBAL temporal_range String year
attribute NC_GLOBAL time int 2024
attribute NC_GLOBAL time_coverage_end String 2024-01-01T00:00:00Z
attribute NC_GLOBAL time_coverage_start String 1998-01-01T00:00:00Z
attribute NC_GLOBAL title String Northwest Atlantic per-pixel spring bloom metrics derived from OC-CCI POLY4 satellite Chlorophyll-a, 1998-present
attribute NC_GLOBAL tools String https://github.com/BIO-RSG/oceancolouR (external link)
attribute NC_GLOBAL Westernmost_Easting double -75.97916666666667
dimension time   double nValues=27, evenlySpaced=false, averageSpacing=365 days 5h 32m 18s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 8.836128E8, 1.7040672E9
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=648, evenlySpaced=true, averageSpacing=-0.04166666666666667
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range double 39.020833333333336, 65.97916666666667
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=816, evenlySpaced=true, averageSpacing=0.04166666666666667
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range double -75.97916666666667, -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 t_start   float time, latitude, longitude
attribute t_start _FillValue float NaN
attribute t_start colorBarMaximum double 200.0
attribute t_start colorBarMinimum double 0.0
attribute t_start ioos_category String Ocean Color
attribute t_start long_name String Day of year of the start of the spring phytoplankton bloom
attribute t_start valid_max float 176.0
attribute t_start valid_min float 1.0
variable t_duration   float time, latitude, longitude
attribute t_duration _FillValue float NaN
attribute t_duration colorBarMaximum double 250.0
attribute t_duration colorBarMinimum double 0.0
attribute t_duration ioos_category String Ocean Color
attribute t_duration long_name String Duration of the spring phytoplankton bloom
attribute t_duration units String days
attribute t_duration valid_max float 220.0
attribute t_duration valid_min float 1.0
variable amplitude_real   float time, latitude, longitude
attribute amplitude_real _FillValue float NaN
attribute amplitude_real colorBarMaximum double 150.0
attribute amplitude_real colorBarMinimum double 0.0
attribute amplitude_real ioos_category String Ocean Color
attribute amplitude_real long_name String Maximum concentration during the spring phytoplankton bloom period
attribute amplitude_real units String mg/m3
attribute amplitude_real valid_max float 100.0
attribute amplitude_real valid_min float 0.0
variable magnitude_real   float time, latitude, longitude
attribute magnitude_real _FillValue float NaN
attribute magnitude_real colorBarMaximum double 30.0
attribute magnitude_real colorBarMinimum double 0.03
attribute magnitude_real colorBarScale String Log
attribute magnitude_real ioos_category String Ocean Color
attribute magnitude_real long_name String Total chlorophyll-a produced during the spring phytoplankton bloom period
attribute magnitude_real units String days*mg/m3
attribute magnitude_real valid_max float 22000.0
attribute magnitude_real valid_min float 0.0
variable annual_mean   float time, latitude, longitude
attribute annual_mean _FillValue float NaN
attribute annual_mean colorBarMaximum double 30.0
attribute annual_mean colorBarMinimum double 0.03
attribute annual_mean colorBarScale String Log
attribute annual_mean ioos_category String Ocean Color
attribute annual_mean long_name String Average chlorophyll-a over the year
attribute annual_mean standard_name String mass_concentration_of_chlorophyll_a_in_sea_water
attribute annual_mean units String mg/m3
attribute annual_mean valid_max float 100.0
attribute annual_mean valid_min float 0.0
variable NRMSE_bloom   float time, latitude, longitude
attribute NRMSE_bloom _FillValue float NaN
attribute NRMSE_bloom colorBarMaximum double 0.1
attribute NRMSE_bloom colorBarMinimum double 0.0
attribute NRMSE_bloom ioos_category String Ocean Color
attribute NRMSE_bloom long_name String Root mean square error between the fitted Gaussian and real chl-a values during the bloom period, normalized to amplitude_real
attribute NRMSE_bloom units String mg/m3
attribute NRMSE_bloom valid_max float 1.0
attribute NRMSE_bloom valid_min float 0.0
variable percent_dineof   float time, latitude, longitude
attribute percent_dineof _FillValue float NaN
attribute percent_dineof colorBarMaximum double 100.0
attribute percent_dineof colorBarMinimum double 0.0
attribute percent_dineof ioos_category String Ocean Color
attribute percent_dineof long_name String Percentage of days with pixel values estimated using DINEOF
attribute percent_dineof valid_max float 100.0
attribute percent_dineof valid_min float 0.0

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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