19 August 2009 Influence of thin cirrus clouds on ocean color products
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Abstract
Scanning radiometers on earth-orbiting satellites are used to measure the chlorophyll content of the oceans via analysis of the water-leaving radiances. These radiances are very sensitive to the atmospheric correction process. In the standard atmospheric correction algorithms, two bands in the NIR wavelength region are used to determine the radiance contributions of aerosols to the top-of-atmosphere radiance. In the standard algorithms, thin cirrus clouds are treated as aerosols. The MODIS instruments on the Terra and Aqua satellites have a band at 1380nm that allows the detection of thin cirrus clouds. This paper shows that the presence of thin cirrus clouds causes a small bias in the water-leaving radiances derived with the traditional algorithms for the MODIS Aqua instrument. The bias is insignificant when averaging over large areas.
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Gerhard Meister, Gerhard Meister, Bryan A. Franz, Bryan A. Franz, Charles R. McClain, Charles R. McClain, } "Influence of thin cirrus clouds on ocean color products", Proc. SPIE 7459, Ocean Remote Sensing: Methods and Applications, 745903 (19 August 2009); doi: 10.1117/12.827272; https://doi.org/10.1117/12.827272
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