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Implications of MERIS surface anomalies for the quality of the MERIS straylight correction

Jean-Paul Huot(1), Steven Delwart(1), Isabelle Muguet(2), Ludovic Bourg(2), Richard Santer(3) and Didier Ramon(4)

(1) ESA/ESTEC, Keplerlaan 1,, 2200 AG Noordwijk, Netherlands
(2) ACRI-ST, 260 Route du Pin Montard, 06904 Sophia-Antipolis, France
(3) ULCO, Station Marine, 62930 Wimereux, France
(4) HYGEOS, CIEL, 5 Rue Héloïse, 59650 Villeneuce d'Ascq, France

Abstract

The MERIS surface pressure product exhibits discontinuities at camera interfaces. A simple assumption on the distribution of straylight in the instrument spectrometers allows to derive a simple model of the impact of poorly-corrected straylight on the surface pressure product. This in turn allows to propose an a posteriori correction for the surface pressure product, and more importantly provides the first quantitative estimate of the quality of the MERIS straylight correction in band 11. Implications on the derivation of a better straylight correction are explored.

 

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