论文部分内容阅读
Though the single-layer solutions have been found for the delta-four-stream spherical harmonic expansion method (SHM) in radiative transfer, there is lack of a corresponding doubling-adding method (4SDA), which enables to calculate radiative transfer through a vertically inhomogeneous atmosphere with multi-layers.The doubling-adding method is based on the Chandrasekhars invariance principle, which was originally developed for discrete ordinates approximation.