Assimilation of satellite cloudy radiances: forward and adjoint radiative transfer modeling

Fuzhong Weng; Quanhua Liu

doi:10.1117/12.466701

14 April 2003 Assimilation of satellite cloudy radiances: forward and adjoint radiative transfer modeling

Fuzhong Weng, Quanhua Liu

Proceedings Volume 4899, Atmospheric and Oceanic Processes, Dynamics, and Climate Change; (2003) https://doi.org/10.1117/12.466701
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

Satellite sensor designs, data assimilation and retrievals of geophysical parameters all require a fast and accurate radiative transfer model. In general, Stokes vector can be derived from the differential and integral radiative transfer equation. The discrete ordinate method was developed to approximate the integral term so that the equation is linearized to a set of the ordinary differential equations that are then solved from the eigenvalue method. In this study, we further derives the radiance gradient (Jacobian) for a scattering and emission atmosphere, which is a crucial component in satellite data assimilation. In addition, we also review land and ocean surface emissivity models affecting both the forward and adjoint computations.

Citation Download Citation

Fuzhong Weng and Quanhua Liu "Assimilation of satellite cloudy radiances: forward and adjoint radiative transfer modeling", Proc. SPIE 4899, Atmospheric and Oceanic Processes, Dynamics, and Climate Change, (14 April 2003); https://doi.org/10.1117/12.466701

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