satellite/4km/anomalies/GMIS_M_ANO_CHLA_MM_YYYY
eng
File Identifier of the parent series
series
Global Marine Information System, Directorate D - Sustainable Resources, Joint Research
Centre
JRC-EMIS@ec.europa.eu
pointOfContact
2013-10-16
ISO19115
2003/Cor.1:2006
http://www.opengis.net/def/crs/EPSG/0/4936
GMIS - MERIS Monthly anomalies sea surface Chlorophyll-a concentration (4km) in %
2013-08-22
creation
2013-06-11T11:15:00
revision
2013-08-29
publication
satellite/4km/anomalies/GMIS_M_ANO_CHLA_MM_YYYY
https://jeodpp.jrc.ec.europa.eu/ftp/public/JRC-OpenData/GMIS
Monthly anomalies sea surface Chlorophyll-a concentration (in mg.m^-3 (log10) at 4km resolution) derived from the MERIS sensor (Satellite remote sensing Ocean color data):
Chlorophyll is a photosynthetic pigment commonly present in all phytoplankton species. It is used as a proxy for phytoplankton biomass.
Chlorophyll concentration is a standard product from satellite-based optical sensors, usually retrieved from empirical algorithms using reflectance ratios at two or more wavebands.
Global Marine Information System, Directorate D - Sustainable Resources, Joint Research
Centre
JRC-EMIS@ec.europa.eu
pointOfContact
Melin, Frederic
European Commission, Joint Research Centre (JRC)
frederic.melin@ec.europa.eu
author
sea surface Chlorophyll-a concentration anomalies
ocean color
satellite observations
marine environment
coastal environment
sea water protection
marine monitoring
GIS digital format
climate change
Environmental monitoring facilities
Oceanographic geographical features
Protected sites
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
environmental data
GEMET - Concepts, version 2.4
2010-01-13
publication
HYDROSPHERE (freshwater, marine water, waters)
GEMET - Groups, version 2.4
2010-01-13
publication
NATURAL ENVIRONMENT, ANTHROPIC ENVIRONMENT
GEMET - Supergroups, version 2.4
2010-01-13
publication
water
GEMET - Themes, version 2.4
2010-01-13
publication
OCEANS
GEOSS - Earth Observation Vocabulary, version 1.0
2011-05-01
publication
no conditions apply
otherRestrictions
no limitations
4
eng
oceans
environment
-180.0
180.0
-90.0
90.0
2002-05-01
2012-03-31
https://jeodpp.jrc.ec.europa.eu/ftp/public/JRC-OpenData/GMIS/
Global Marine Information System
WWW:LINK
The Global Marine Information System (GMIS) provides information on marine ecosystems and coastal state, using biological and physical variables generated by satellite remote sensing. GMIS allows visualisation and download of Remote Sensing Ocean color data and derived products hosted at the Directorate D - Sustainable Resources.
information
https://jeodpp.jrc.ec.europa.eu/ftp/public/JRC-OpenData/GMIS/satellite/4km/anomalies/
GMIS - Download access (GMIS_M_ANO_CHLA)
WWW:DOWNLOAD
Direct NetCDF download
download
series
COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
2010-12-08
publication
See the referenced specification
false
General information: Monthly anomalies sea surface Chlorophyll-a concentration in mg.m^-3 (log10 scalling) derived from the MERIS sensor.
Processing information: Chlorophyll-a data is processed using NASA SeaDAS 6.4 software and the standard OC3M algorithm for chla.
Temporal characteristics: This product consists of standard Monthly anomalies sea surface chlorophyll-a concentrations (L3 product) at 9km resolution (projection: Equidistant cylindrical Grid mapping: equirectangular).
Description of observation methods/instruments: The remote sensing of 'Ocean Color' represents a measure of the spectral variations in the light leaving the water surface, subsequently interpreted in terms of concentrations of optically-significant constituents in the water. After removing the atmospheric contribution, the water leaving radiance recorded at a given time and wavelength by the satellite reflects the optical properties of the water which, in turn, mirrors a specific structure and biogeochemical composition of the marine waters. Accordingly, the satellite-derived reflectance at the air-sea interface can be related to the concentration of an optically-significant constituent (e.g. chlorophyll). The retrieval of chlorophyll from SeaWiFS for case 1 waters (optically dominated by phytoplankton and associated products) uses a 4th order polynomial algorithm (O'Reilly et al. 2000).
Quality/accuracy/calibration information: The 'standard' algorithm proposed by space agencies to process data from their sensors has a nominal accuracy of ~35% in the retrieval of surface chlorophyll in case 1 waters. References: J. E. O'Reilly and co-authors, SeaWiFS Postlaunch Calibration and Validation Analyses, Part 3. NASA Tech. Memo. 2000-206892, Vol. 11, S.B. Hooker and E.R. Firestone, Eds., NASA Goddard Space Flight Center, Greenbelt, Maryland, 9-23.
Other contextual information: The product is stored in NetCDF data and available for download.