Joint Seminar: Marine phytplankton studied with global biooptical methods

nformation on phytoplankton light absorption is necessary to derive
accurate estimates of marine chl /a/ concentration and primary
production. Global satellite data on photosynthetically active radiation
and chl /a/ concentration are available from a suite of satellite
imagers like CZCS, SeaWiFS, MODIS, MERIS and others, but spectral
information of absorption by phytoplankton and other water constituents
is still lacking. Therefore, we use Differential Optical Absorption
Spectroscopy (DOAS) to study the retrieval of phytoplankton distribution
and absorption with the satellite sensor Scanning Imaging Absorption
Spectrometer for Atmospheric Chartography (SCIAMACHY). SCIAMACHY
measures back scattered solar radiation in the UV-Vis-NIR spectral
region with a high spectral resolution (0.2 to 1.5 nm). First results
showing global phytoplankton distribution and the distinction of
phytoplankton absorption signatures from different phytoplankton
communities are presented.




13:30 h


Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg


Astrid Bracher, AWI Bremerhaven


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