【摘要】 采用离散纵标程序DISORT和矩阵算法．分别计算了波长为0．763μm的太阳辐射在大气气溶胶介质内部、波长1．39μm的辐射在卷云和水云中的多次散射过程.得到不同太阳天顶角下不同光学厚度的气溶胶层内以及卷云和水云在各方向的透射与反射分布，并且．对两种算法的计算结果作了比较．分析和考察了两种算法的差异和速度．更多还原

【Abstract】 The discrete ordinate method and the matrix method are two numerical models for radiativetransfer calculations in anisotropically scattering atmospheres. and DISORT is the established calculatingprogram based on the discrete ordinate method. In this paper. DISORT and the matrix method are employed to calculate the radiation Intensity of the aerosol. cirrus and water cloud in different emergent angleand optical depth. The wavelegths are 0. 763pm for aerosol and 1.39μm for clouds. Comparisons of the results of the two methods indicate the differences in forward radiation intensity. It is also found that for thecase of relatively small forward peak of phase function. the results of the two methods agree with eachother very well except in the forward direction. while difference appear when the phase function has astronger forward peak. In computing the matrix method is faster than DISORT.更多还原