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Proceedings Paper

Obtaining Inherent Water Optical Properties From Apparent Water Optical Properties
Author(s): W S Helliwell; S D Gasster
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Paper Abstract

Modeling the radiative transfer in the ocean requires the volume absorption coefficient, a, and the volume scattering coefficient, b. These are generally not measured during ocean optical field experiments, rather one typically finds that the apparent optical properties are measured or at least derived from irradiance measurements. For modeling purposes it would be useful to be able to retrieve the inherent optical properties a and b from the measured apparent optical properties (Kd, RR and rw for example). We report here some preliminary investigations into a general method for obtaining a and b from the AOP, given the incident radiance distribution and the scattering phase function. The method uses the technique of nonlinear parameter estimation in conjunction with a finite difference discrete ordinate solution to the radiative transfer equation. The numerical radiative transfer solution is compared to previous work, and an attempt is made to obtain a and b from measured values of the diffuse attenuation coefficient and the water reflectivity. This technique includes all orders of scattering and is computationally efficient.

Paper Details

Date Published: 12 August 1988
PDF: 8 pages
Proc. SPIE 0925, Ocean Optics IX, (12 August 1988); doi: 10.1117/12.945705
Show Author Affiliations
W S Helliwell, Arete Associates (United States)
S D Gasster, Arete Associates (United States)

Published in SPIE Proceedings Vol. 0925:
Ocean Optics IX
Marvin A. Blizard, Editor(s)

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