REMOVAL OF SCATTERED-LIGHT IN THE EARTH ATMOSPHERE

Atmospheric correction algorithm, which means a procedure to remove sc attered light in an atmosphere from the spaced-based data, are shown f or ocean color data given by the satellite ADEOS. In order to achieve better atmospheric correction, this paper proposes two subjects; one i s how to determine aerosol characteristics by referring to both of rad iance and polarization, and the other is introduction of atmospheric c orrection coefficients. At first it is shown that a heterogeneous grai n model according to Maxwell-Garnett mixing rule as small water-solubl e (WS) inclusions in an oceanic (OC) matrix is available to interpret ADEOS/OCTS and POLDER data observed over the Arabian Sea. Our algorith m is based on an idea that aerosol characteristics can be estimated in terms of scattering behavior in the polarization field. Then atmosphe ric correction, which is based on radiative transfer process in an atm osphere-ocean model involving the retrieved aerosol model, is applied to ocean color data given by ADEOS/OCTS. Finally our atmospheric corre ction provides an expected chlorophyll map near the sea surface. It is of interest to mention that retrieval of atmospheric aerosols is impr oved by combination use of radiance and polarization, moreover atmosph eric correction process is progressed by using the correction coeffici ents.