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Opt Express. 2010 Mar 29;18(7):7521-7. doi: 10.1364/OE.18.007521.

Estimation of near-infrared water-leaving reflectance for satellite ocean color data processing.

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  • 1Futuretech Corporation, 7307 Hanover Parkway, Suite D, Greenbelt, Maryland 20770, USA.


The atmospheric correction algorithm employed by the NASA Ocean Biology Processing Group requires an assumption of negligible water-leaving reflectance in the near-infrared region of the spectrum. For waters where this assumption is not valid, an optical model is used to estimate near-infrared water-leaving reflectance. We describe this optical model as implemented for the sixth reprocessing of the SeaWiFS mission-long time-series (September 2009). Application of the optical model resulted in significant reductions in the number of negative water-leaving reflectance retrievals in turbid and optically complex waters, and improved agreement with in situ chlorophyll-a observations. The incidence of negative water-leaving reflectance retrievals at 412 nm was reduced by 40%, while negative reflectance at 490 nm was nearly eliminated.

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