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Proceedings Paper

Remote sensing reflectance and inherent optical properties of oceanic waters derived from above-water measurements
Author(s): Zhongping Lee; Kendall L. Carder; Robert G. Steward; Thomas G. Peacock; Curtiss O. Davis; James L. Mueller
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Paper Abstract

Remote-sensing reflectance and inherent optical properties of oceanic properties of oceanic waters are important parameters for ocean optics. Due to surface reflectance, Rrs or water-leaving radiance is difficult to measure from above the surface. It usually is derived by correcting for the reflected skylight in the measured above-water upwelling radiance using a theoretical Fresnel reflectance value. As it is difficult to determine the reflected skylight, there are errors in the Q and E derived Rrs, and the errors may get bigger for high chl_a coastal waters. For better correction of the reflected skylight,w e propose the following derivation procedure: partition the skylight into Rayleigh and aerosol contributions, remove the Rayleigh contribution using the Fresnel reflectance, and correct the aerosol contribution using an optimization algorithm. During the process, Rrs and in-water inherent optical properties are derived at the same time. For measurements of 45 sites made in the Gulf of Mexico and Arabian Sea with chl_a concentrations ranging from 0.07 to 49 mg/m3, the derived Rrs and inherent optical property values were compared with those from in-water measurements. These results indicate that for the waters studied, the proposed algorithm performs quite well in deriving Rrs and in- water inherent optical properties from above-surface measurements for clear and turbid waters.

Paper Details

Date Published: 6 February 1997
PDF: 7 pages
Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); doi: 10.1117/12.266436
Show Author Affiliations
Zhongping Lee, University of South Florida (United States)
Kendall L. Carder, University of South Florida (United States)
Robert G. Steward, University of South Florida (United States)
Thomas G. Peacock, University of South Florida (United States)
Curtiss O. Davis, Naval Research Laboratory (United States)
James L. Mueller, San Diego State University (United States)

Published in SPIE Proceedings Vol. 2963:
Ocean Optics XIII
Steven G. Ackleson; Robert J. Frouin, Editor(s)

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