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Proceedings Paper

Mesoscale and seasonal bio-optical properties variability in coastal waters using the example of the eastern English Channel during Spring, 2000
Author(s): Vincent Vantrepotte; Christophe Brunet; Xavier Meriaux; Eric Lecuyer; Eric Dilligeard; Richard P. Santer
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Paper Abstract

Remote sensed chlorophyll α (chlα) maps are useful to proceed to phytoplankton dynamics study and primary production modelization in coastal waters. However, chlα remote sensing depend on the bio-optical characteristics of waters masses which are site-specific and highly variable according to space and time in coastal waters. In order to study the seasonal variability of phytoplankton and bio-optic parameters as well as the factors controlling their spatio-temporal distributions, five mesoscale cruises (BIOPTEL) were carried out in the eastern English Channel during the spring 2000 (between February and October). Phytoplankton absorption spectrum showed a high variability according to space and time due to the algal community composition and the physiological state. Considering these scales of variation, a local model was defined. The variability of the two other components of marine absorption: yellow substances and non algal particles are also presented and related to exogenous parameters such as river flow, temperature and hydrodynamism. Furthermore, in order to appreciate how important are the local IOPs (Inherent Optical Properties) variability on AOPs (Apparent Optical Properties) restitution a sensitivity analysis was realized. In the frame of biomass estimation, marine reflectance were simulated considering the local absorption coefficients rather than the standard ones.

Paper Details

Date Published: 8 May 2003
PDF: 12 pages
Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); doi: 10.1117/12.467320
Show Author Affiliations
Vincent Vantrepotte, Univ. du Littoral Cote d'Opale (France)
Christophe Brunet, Stazione Zoologica Anton Dohrn Napoli (Italy)
Xavier Meriaux, Univ. du Littoral Cote d'Opale (France)
Eric Lecuyer, Univ. du Littoral Cote d'Opale (France)
Eric Dilligeard, Univ. du Littoral Cote d'Opale (France)
Richard P. Santer, Univ. du Littoral Cote d'Opale (France)


Published in SPIE Proceedings Vol. 4892:
Ocean Remote Sensing and Applications
Robert J. Frouin; Yeli Yuan; Hiroshi Kawamura, Editor(s)

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