22 December 2000 Novel algorithm for sea water quality monitoring by NOAA-AVHRR optical channels
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Abstract
Many techniques have ben developed for the assessment and monitoring of sea suspended matter (SSM) by the two optical channels of the NOAA-AVHRR. However, they are useful only for cloudless conditions. In this work a new algorithm is proposed, which is based on the two AVHRR optical channels revealing SSM patterns also in hazy conditions or under thin clouds. It combines two indexes derived from the AVHRR optical bands in order to account for the effect of the atmosphere on albedo and moreover on the sea spatial patterns. A criterion based on the statistical comparison of the two indexes discriminates between clear areas and pixels belonging to one of two different classes of suspended sediments. The performance of the proposed algorithm has been tested on a set of NOAA-AVHRR imagery of the Adriatic sea acquired in the winter and summer 1997-98. The results showed spatial patterns steadily varying in time, which are recognized as inorganic sediments or chlorophyll.
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Roberto Carla, Andrea Maccioni, "Novel algorithm for sea water quality monitoring by NOAA-AVHRR optical channels", Proc. SPIE 4172, Remote Sensing of the Ocean and Sea Ice 2000, (22 December 2000); doi: 10.1117/12.411690; https://doi.org/10.1117/12.411690
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