平面平行大气中偏振辐射传输的数值计算

Numerical calculations for the vector discrete-ordinate radiative transfer in a plane-parallel atmosphere

利用离散纵坐标(DISORT)法的基本原理,开发了平面平行大气中偏振辐射传输的数值计算模型,并利用解析插值原理实现了对任意天顶方向散射斯托克斯参量的求解。为检验计算模型的可靠性,分别针对分子和气溶胶散射大气进行了数值模拟,并与Coulson等1960年、Garcia等1989年的计算结果进行了比较。结果表明,模型计算结果与上述作者的计算结果的最大偏差小于0.7%。并对不同粒子谱、不同光学厚度计算程序的稳定性进行了验证分析。

Based on the DISORT theory,a numerical scheme is developed to calculated the vector radiative transfer（VDISORT） in a plane-parallel atmosphere at arbitrary angles and optical depths by the analytical interpolation method.The scheme is tested for Rayleigh scattering and Mie scattering.In both test cases,the yield results fit the benchmark values within 0.7% from Coulson et al and Garcia et al.At last,the stability of the scheme is tested at the different optical depth for the different particle size distribution atmosphere.