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Numerical computations of rough sea surface emissivity using the interaction probability density

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Abstract

The Cox–Munk–Plass interaction probability density is used for computing emissivity from a two-dimensional anisotropic model of a rough sea surface. The infrared wavelengths of interest are the 3–5-μm and 8–14-μm bands, and computations are performed in the co-wind and crosswind directions for receiver polar angles varying from the zenith to the horizon. Comparisons between co-wind and crosswind results are made as a function of windspeed, wavelength, and the polar angle of the receiver, with an emphasis on results at the horizon. A method for obtaining upper and lower bounds on the surface emissivity is also given which, in the context of reflection, provides a measure of the effects of multiple reflections.

© 1997 Optical Society of America

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