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Proceedings Paper

Polarized MODTRAN 3.7 applied to characterization of ocean color in the presence of aerosols
Author(s): Walter G. Egan; Quanhua Liu
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Paper Abstract

The color of the ocean and estuarine waters are key indicators of pollutants as well as biological phenomenon. However atmospheric aerosols can be produce a significant bias in the observations. Of particular importance is dust from the Sahara and Gobi Deserts on the Atlantic and Pacific Ocean photometric observations. Polarization can be used to deconvolute the effects of aerosols. In comparison to non- absorbing aerosols, the desert aerosol has opposite behavior for epsilon function with wavelength. Results show the degree of plane polarization decreases with the increase of the aerosol optical thickness and is wavelength dependent. The degree of polarization increases as the viewing zenith angle increase. An additional fallout of this analysis is the effect of aerosols on the ocean heat exchange; warming or cooling can occur depending upon the optical properties of the aerosols. Further, the visibility of military targets is strongly a function of aerosol scattering properties.

Paper Details

Date Published: 9 January 2002
PDF: 14 pages
Proc. SPIE 4481, Polarization Analysis and Measurement IV, (9 January 2002); doi: 10.1117/12.452893
Show Author Affiliations
Walter G. Egan, CUNY/York College (United States)
Quanhua Liu, National Oceanic and Atmospheric Administration (United States)

Published in SPIE Proceedings Vol. 4481:
Polarization Analysis and Measurement IV
Dennis H. Goldstein; David B. Chenault; Walter G. Egan; Michael J. Duggin; Walter G. Egan; Michael J. Duggin, Editor(s)

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