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MERIS Validation at the BOUSSOLE site

David Antoine(1), Constant Mazeran(2), Ludovic Bourg(2), Marc Bouvet(3), Fabrizio D'Ortenzio(1), Samantha Lavender(4), Kathryn Barker(4), Bernard Gentili(1), Vincenzo Vellucci(5) and Dominique Tailliez(5)

(1) Laboratoire d'Océanographie de Villefranche (LOV), Caserne Nicolas, Quai de la Darse, 06230 Villefranche sur mer, France
(2) ACRI-ST, 260 route du Pin Montard, 06904 Sophia Antipolis, France
(3) ESA - ESTEC, Keplerlaan 1, PB 299, NL-2200 AG Noordwijk, Netherlands
(4) ARGANS limited, Tamar Science Park, 1 Davy Road, Derriford, Plymouth, Devon, PL6 8BX, United Kingdom
(5) Laboratoire d'Océanographie de Villefranche (LOV), Caserne Nicolas, Quai de la Darse, 06230, Villefranche sur mer, France

Abstract

The BOUSSOLE project has been set up to provide a long-term record of the ocean reflectance in support to the vicarious calibration of ocean colour sensors observations, and to the validation of the geophysical products retrieved from these observations. The site is located in the northwestern Mediterranean Sea. The results of the validation of the operational MERIS level-2 products are presented (water-leaving reflectances and chlorophyll concentration), under the form of a comparison with the in-situ data. The same exercise is also performed for the products of similar sensors, i.e., MODIS and SeaWiFS, which allows the performance of the different missions to be compared. They show that a vicarious calibration could be advantageously applied to MERIS, in the same way than already done for other sensors, in order to eventually decrease the uncertainty in the retrieved water-leaving reflectances, in particular for blue bands. The rationale for this vicarious calibration and its application to MERIS are presented.

 

Workshop presentation

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry