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Correction of Fresnel reflection of the sky dome accounting for the polarisation
Santer, R.; Zagolski, F. (2013). Correction of Fresnel reflection of the sky dome accounting for the polarisation. Association pour le Développement de la Recherche et de l'Innovation dans le Nord-Pas de Calais (ADRINORD): Lille. 26 pp.

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Documenttype: Projectrapport

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  • Santer, R., meer
  • Zagolski, F.

    The ocean colour from satellite measurements is characterized by the water reflectance. In situ measurements of the water reflectance are performed in our 2Seas region to validate the satellite products. A field radiometer measures the water leaving radiance which has two sources: (i) The signal from the ocean which is the useful component. (ii) The reflection of the atmospheric radiance which has to be subtracted A second radiometer measured the atmospheric radiance. The standard correction is based on applying the Fresnel coefficient for the view angle. This approach ignored the polarisation both of the atmospheric scattering and of the Fresnel reflection. This report after a sensitivity study, aims defining a new protocol to better correct from the sky dome reflection. This new protocol will be applied to the in situ data base collected in the 2Seas region.

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