冰晶粒子散射相函数的多项式展开可以应用于卷云条件下大气辐射传输模式的计算。本文利用广义球函数对表面严重粗糙的冰晶粒子相函数进行展开,并对表面严重粗糙的实心棱柱模型、实心棱柱聚合物模型和一般种类混合模型3种冰晶粒子的展开系数特性进行分析研究,数值计算结果表明了广义球函数对表面严重粗糙的冰晶粒子多项式展开的有效性。

Expansion coefficients of ice crystal phase function can be used as input parameter in atmospheric radiative transfer calculations.In this paper,the phase functions of ice crystal with surface severe roughness are expanded by the generalized spherical functions,and the characteristics of expansion coefficients are analyzed for GHM,COL and ASC ice crystal particle model.The simulating results present the efficiency of generalized spherical function method for ice crystal particles with severe surface roughness.