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Article Dans Une Revue Biogeosciences Discussions Année : 2007

Detailed validation of the bidirectional effect in various Case 1 waters for application to Ocean Color imagery

Résumé

The radiance viewed from the ocean depends on the illumination and viewing geometry along with the water properties and this variation is called the bidirectional effect, or BRDF of the water. This BRDF depends on the inherent optical properties of the water, including the volume scattering function, and is important when comparing data from different satellite sensors. The current model by Morel et al. (2002) depends on modeled water parameters, thus must be carefully validated. In this paper we combined upwelling radiance distribution data from several cruises, in varied water types and with a wide range of solar zenith angles. We found that the average error of the model, when compared to the data was less than 1%, while the RMS difference between the model and data was on the order of 0.02–0.03. This is well within the statistical noise of the data, which was on the order of 0.04–0.05, due to environmental noise sources such as wave focusing.
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Dates et versions

hal-00330251 , version 1 (18-06-2008)

Identifiants

  • HAL Id : hal-00330251 , version 1

Citer

K. J. Voss, A. Morel, David Antoine. Detailed validation of the bidirectional effect in various Case 1 waters for application to Ocean Color imagery. Biogeosciences Discussions, 2007, 4 (3), pp.2069-2093. ⟨hal-00330251⟩
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