Evaluation of coastal zone color scanner diffuse attenuation coefficient algorithms for application to coastal waters

James L. Mueller; Charles C. Trees; Robert A. Arnone

doi:10.1117/12.21435

1 September 1990 Evaluation of coastal zone color scanner diffuse attenuation coefficient algorithms for application to coastal waters

James L. Mueller, Charles C. Trees, Robert A. Arnone

Author Affiliations +

Proceedings Volume 1302, Ocean Optics X; (1990) https://doi.org/10.1117/12.21435
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

The Coastal Zone Color Scannez (ZCS) and associated atmospheric and in-water algorithms have allowed synoptic analyses of regional and large scale variability of bio-optical properties [phytoplankton pigments and diffuse auenuation coefficient K(490)}. Austin and Petzold (1981) developed a robust in-water K(490) algorithm which related the diffuse attenuation coefficient at one optical depth [1/K(490)] to the ratio of the water-leaving radiances at 443 and 550 nm. Their regression analysis included diffuse attenuation coefficients K(490) up to 0.40 nm, but excluded data from estuarine areas, and other Case II waters, where the optical properties are not predominantly determined by phytoplankton. In these areas, errors are induced in the retrieval of remote sensing K(490) by extremely low water-leaving radiance at 443 nm [L_w(443) as viewed at the sensor may only be 1 or 2 digital counts], and improved cury can be realized using algorithms based on wavelengths where L_w(λ) is larger. Using ocean optical profiles quired by the Visibility Laboratory, algorithms are developed to predict K(490) from ratios of water leaving radiances at 520 and 670, as well as 443 and 550 nm.

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James L. Mueller, Charles C. Trees, and Robert A. Arnone "Evaluation of coastal zone color scanner diffuse attenuation coefficient algorithms for application to coastal waters", Proc. SPIE 1302, Ocean Optics X, (1 September 1990); https://doi.org/10.1117/12.21435

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