26 February 2004 Bio-optics and primary production model in case-2 waters: example of the eastern English Channel
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Abstract
Remote sensing represent a powerful tool to estimate chla concentrations and to predict primary production in coastal waters. However, in order to use this tool efficiently in such variable ecosystems we need to increase our knowledge concerning bio-optical properties, phytoplankton community and photosynthetic parameters variability in order to develop adapted regional algorithms. Spatial and temporal variations of these key parameters were investigated during spring 2000 in the English Channel across five mesoscale cruises (BIOPTEL) realised between February and October 2000. From this in situ data set (phytoplankton pigments obtained by HPLC, nutrients concentration, phytoplankton productivity estimated by variable fluorescence technique (Phyto-Pam), yellow substance absorption, particulate matter absorption), we assessed the scales of variation of primary production model inputs in the several identified biological provinces and throughout spring. These in situ observations were used to proceed to sensitivity analyses of a local primary production model. Further, from this local modelisation we discussed on (i) the biases induced by the using of existing algorithms developed to obtain primary production directly from satellite data in such ecosystems and (ii) of the improvements which should be done concerning such general models.
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Vincent Vantrepotte, Vincent Vantrepotte, Christophe Brunet, Christophe Brunet, Richard P. Santer, Richard P. Santer, Xavier Meriaux, Xavier Meriaux, Sami Souissi, Sami Souissi, Eric Lecuyer, Eric Lecuyer, } "Bio-optics and primary production model in case-2 waters: example of the eastern English Channel", Proc. SPIE 5233, Remote Sensing of the Ocean and Sea Ice 2003, (26 February 2004); doi: 10.1117/12.511194; https://doi.org/10.1117/12.511194
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