GMIS - SeaWiFS Monthly mean photosynthetically available radiation (4km) in E.m^-2.d^-1

Frederic Melin

Description

Photosynthetically Active Radiation (PAR in Einstein.m^-2.day^-1 at 4km resolution): PAR is defined as the quantum energy flux from the sun in the spectral range 400 to 700 nm, usable in the process of photosynthesis by phytoplankton, benthic algae and seagrass.

Contact

Email: jrc-emis (at) ec.europa.eu

Contributors

Frederic Melin

How to cite

Melin, Frederic (2013): GMIS - SeaWiFS Monthly mean photosynthetically available radiation (4km) in E.m^-2.d^-1. European Commission, Joint Research Centre (JRC) [Dataset] PID: http://data.europa.eu/89h/29fd33e8-d521-46f4-b780-97a89520a6e6

Keywords

climate change coastal environment GIS digital format marine environment marine monitoring ocean color photosynthetically available radiation satellite observations sea water protection

Data access

GMIS - Download access (GMIS_S_PAR)

Use conditions: European Commission reuse notice
Access conditions: No limitations

URL

Direct NetCDF download

Spatial coverage

GML

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GML

<gml:Polygon xmlns:gml="http://www.opengis.net/gml/3.2">  <gml:exterior>    <gml:LinearRing>      <gml:posList>-180 90 180 90 180 -90 -180 -90 -180 90</gml:posList>    </gml:LinearRing>  </gml:exterior></gml:Polygon>

WKT

POLYGON ((-180 90, 180 90, 180 -90, -180 -90, -180 90))

Temporal coverage

From date	To date
1997-09-01	2010-12-31

Lineage information

General information: Monthly mean photosynthetically available radiation in E.m^-2.d^-1 (mol photons per square meter and per day) derived from the SeaWiFS sensor. Processing information: PAR data is reprocessed using the NASA SeaDAS 6.4 software (Frouin et al., 2003). Description of observation methods/instruments: The approach is described by Frouin et al. (2003).The content of the atmosphere in terms of aerosols and clouds is inferred from the spectrum of top-of-atmosphere radiance collected by the sensor in space. In turn, the downwelling irradiance reaching the surface of the ocean is computed using plane parallel theory. Eventually, by integration spectrally and over time, PAR is expressed as a daily value. Quality/Accuracy/Calibration information: The approach and results are described by Frouin et al. (2003). PAR represents the radiation in the spectral domain of relevance for photosynthesis (400-700 nm), and is used in model of primary production. References: Frouin, R., Franz, B.A., Werdell, P.J.: The SeaWiFS PAR product. In "Algorithm updates for the fourth SeaWiFS data reprocessing", S.B. Hooker and E.R. Firestone (Eds.) NASA/ NASA Technical Memorandum, 2003-206892, 22: 46-50.

Additional information

Published by: European Commission, Joint Research Centre
Created date: 2020-11-23
Modified date: 2020-11-23
Issued date: 2013-08-29
Landing page: http://gmis.jrc.ec.europa.eu/
Language(s): English
Data theme(s): Environment
Update frequency: unknown
Identifier: http://data.europa.eu/89h/29fd33e8-d521-46f4-b780-97a89520a6e6
Popularity