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

被引:353
作者
Bailey, Sean W. [1 ,2 ]
Franz, Bryan A. [2 ]
Werdell, P. Jeremy [2 ,3 ]
机构
[1] Futuretech Corp, Greenbelt, MD 20770 USA
[2] NASA, Goddard Space Flight Ctr, Ocean Biol Proc Grp, Greenbelt, MD 20771 USA
[3] Sci Syst & Applicat Inc, Lanham, MD 20706 USA
来源
OPTICS EXPRESS | 2010年 / 18卷 / 07期
关键词
CHLOROPHYLL-A; RADIANCE; SEAWIFS; CASE-1;
D O I
10.1364/OE.18.007521
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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. (C) 2010 Optical Society of America
引用
收藏
页码:7521 / 7527
页数:7
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