Atmosphere, Volume 10, Issue 6 (June 2019) – 57 articles
Cover Story (view full-size image): To accurately process the high spatial resolution data coming from satellite spectrometers, it is important to account for three-dimensional effects caused by cloud inhomogeneities. Retrieval algorithms require the partial derivatives of the outgoing radiances with respect to some atmospheric parameters of interest. Models with such capabilities are called linearized. In our paper, linearizations of the three-dimensional radiative transfer model SHDOM by means of a forward and a forward–adjoint approach are presented. SHDOM is specialized for derivative calculations and radiative transfer problems involving the spherical harmonics and discrete ordinate methods as well as adaptive grid splitting, while practical formulas for computing the derivatives are derived. The accuracies and efficiencies of the proposed methods are analyzed for several problems. View this paper.
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