satellite/9km/GMIS_A_APH_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 - MODIS-AQUA Monthly mean absorption coefficient due to phytoplankton at 443nm (9km) in m^-1
2013-08-22
creation
2013-06-11T11:15:00
revision
2013-08-29
publication
satellite/9km/GMIS_A_APH_MM_YYYY
https://jeodpp.jrc.ec.europa.eu/ftp/public/JRC-OpenData/GMIS
Absorption Coefficient of Phytoplankton at 443nm (aph in m^-1 at 9km resolution): The absorption coefficient aph represents the fraction of incident light absorbed by phytoplankton organisms. It is an index of variability of the phytoplankton biomass in marine and coastal turbid waters.
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
absorption coefficient due to phytoplankton
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
9
eng
oceans
environment
-180.0
180.0
-90.0
90.0
2002-07-01
2017-10-31
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/9km/
GMIS - Download access (GMIS_A_APH)
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 mean absorption coefficient due to phytoplankton at 443nm in m^-1 derived from the MODIS-AQUA sensor.
Processing information: aph(443) data is processed using SeaDAS 6.4 software and the QAA algorithm (Lee et al., 2002).
Temporal characteristics: This dataset consists of standard mapped image monthly mean sea surface layer aph(443) maps at 9km resolution (L3 product).
Description of observation methods/instruments: The remote sensing of 'Ocean Colour' 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. The electromagnetic signal collected by the sensor on-board the satellite is largely determined by photons that have never reached the water surface, but have been backscattered within the atmosphere through multiple interactions between gas molecules and aerosols. After removing the atmospheric contribution, the water leaving radiance recorded at a given time by the satellite reflects the optical properties of the water which, in turn, mirrors a specific structure and biogeochemical composition of the marine waters. The satellite-derived reflectance at the air-sea interface is related to inherent optical properties of the water constituents including aph(443).
Quality/accuracy/calibration information: The calculation is based on a semi-analytical bio-optical algorithm. More details as well as validation results are given in Lee et al. (2002), IOCCG (2006) or Melin et al. (2007). References: Lee, Z.-P., Carder, K.L., Arnone, R.: Deriving inherent optical properties from water color: A multiband quasi-analytical algorithm for optically deep waters. Appl. Opt., 41, 5755-5772, 2002. IOOCG Report 5: Remote sensing of inherent optical properties: Fundamentals, tests of algorithms, and applications, Eds. Z.-P. Lee, 126pp., 2006. Mélin,F., Zibordi, G., Berthon, J.-F.: Assessment of satellite ocean color products at a coastal site. Remote Sens. Environ., 110, 192-215, 2007. Other contextual information: The product is stored in NetCDF data confirming to the COARDS-CF conventions and delivered through FTP, OpenDAP and Live Access Server (work in progress).
Other contextual information: The product is stored in NetCDF data and available for download.