Iteration of Source Function Method for Radiance Angular Distribution in Coupled Atmosphere and Ocean Systems
Abstract
The methods to solve the radiative transfer equation in a turbid medium can be divided into two categories: stochastic and deterministic. The stochastic approach is also called the Monte Carlo method, with which the estimation technique can be used to efficiently get radiance at arbitrary user-defined angles. Nevertheless, the Monte Carlo method is generally time-consuming in terms of radiance simulation. On the other hand, the deterministic solutions discretize the radiation field in both the angular and Cartesian spatial spaces. As a result the radiation field by the deterministic solutions is provided only at discrete quadrature angles. To find solutions at arbitrary viewing angles, the iteration of source function (IOSF) method has been developed for the DIScrete Ordinates Radiative Transfer (DISORT) code, which has been proven to be efficient and accurate. In this work we apply the IOSF method to the successive order of scattering method to obtain the polarized radiation field at arbitrary viewing angles with a special focus on the coupled atmosphere and ocean systems (CAOS). The IOSF method is combined with an exact analytical single scattering solution of the polarized radiative transfer in CAOS to achieve superior accuracy even when discontinuity is present in the radiation field.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFM.A54D..06Z
- Keywords:
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- 3359 ATMOSPHERIC PROCESSES / Radiative processes;
- 4504 OCEANOGRAPHY: PHYSICAL / Air/sea interactions