Proceedings Article | 4 November 2010
KEYWORDS: Scattering, Remote sensing, Reflectivity, Absorption, Algorithm development, Computer simulations, Phase measurement, Bidirectional reflectance transmission function, Solids, Optical properties
Inherent optical properties (IOPs), e.g., absorption, back scattering coefficients, and volume scattering function, are
important parameters for radiance transfer simulation. Commercially available instruments (e.g., Wetlabs ACS, BB9, etc,
and HOBILabs a-sphere, HS6, etc) basically only measure absorption and back scattering coefficients. In this paper, we
used the same IOPs of International Ocean-Colour Coordinating Group (IOCCG) report 5 and Hydrolight to simulate the
radiance distribution, however, different phase functions, say, a new phase function derived from the measured data by
multispectral volume scattering meter (MVSM) in coastal waters, the widely used Petzold average phase function, and
the Fournier-Forand (FF) phase function, were employed in the simulations. The simulation results were used to develop
the retrieval algorithm with angular effects correction based on the quasi-analytical algorithm(QAA) developed by Lee et
al.. Results showed that not only the back scattering probability, but also the angular shape of phase function are
important for ocean color retrieval algorithm. Considering the importance of phase function in ocean color remote
sensing, methods to validate the phase function data should be developed.
