New approach to atmospheric correction of satellite ocean color data

Oleg V. Kopelevich; Sergey V. Sheberstov; Svetlana Vazyulya; Ilia G. Zolotov; Sean W. Bailey

doi:10.1117/12.740433

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13 April 2007 New approach to atmospheric correction of satellite ocean color data

Oleg V. Kopelevich, Sergey V. Sheberstov, Svetlana Vazyulya, Ilia G. Zolotov, Sean W. Bailey

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Proceedings Volume 6615, Current Research on Remote Sensing, Laser Probing, and Imagery in Natural Waters; 661502 (2007) https://doi.org/10.1117/12.740433
Event: Current Research on Remote Sensing, Laser Probing, and Imagery in Natural Waters, 2007, Moscow, Russian Federation

Abstract

Requirements on accuracy of the atmospheric correction of satellite ocean color data are rather high, and so far attempts to solve this problem as needed have not been quite successful, especially at high latitudes and in coastal waters. New approach to the atmospheric correction problem consists in simultaneous retrieval of the unknown aerosol and ocean reflectances ρ_α(λ_i) and ρ_w(λ_i) from the top-of-the-atmosphere reflectance ρ_t(λ_i) with use of all spectral channels of a satellite sensor in infrared and visible ranges. The approach is based on parameterization of the spectral behavior of ρ_α(λ_i) and ρ_w(λ_i) with help of several basic functions. In this way the problem reduces to determination of several weight coefficients at these basic functions. This allows us to cut drastically the size and number of required lookup tables. The inversion problem is solved by a least square method with inequality constraints. It is shown that the new algorithm results in better agreement with in situ measured ρ_w(λ_i), compared with the standard SeaWiFS algorithm, in Case 2 waters.

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Oleg V. Kopelevich, Sergey V. Sheberstov, Svetlana Vazyulya, Ilia G. Zolotov, and Sean W. Bailey "New approach to atmospheric correction of satellite ocean color data", Proc. SPIE 6615, Current Research on Remote Sensing, Laser Probing, and Imagery in Natural Waters, 661502 (13 April 2007); https://doi.org/10.1117/12.740433

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