基于组合拟合法的冰晶粒子的光散射计算

利用组合拟合法计算了冰晶粒子的单次散射特性。给出了消光效率因子、单次散射反照度及非对称因子的拟合公式,利用拟合公式对有效粒子尺度为20μm和120μm的六种冰晶粒子的消光效率因子、单次散射反照度及非对称因子进行了计算。结果表明,粒子的消光效率因子、单次散射反照率和非对称因子随着入射波长的增加有着较大的起伏,后两者随着波长的增加而变化趋势基本一致;对于单次散射反照率来说,在可见光波段,反照率非常接近于1;在短波段,粒子的非对称因子变化较小,并且随着波长的增加,非对称因子会逐渐增大。

Calculation of Light Scattering on Ice Crystals Particles by Using Combination Fitted Method

The calculation of Single-scattering properties on ice crystals by using combination method is presented.The fitted formulations of the extinction efficiencies,single-scattering albedo,and asymmetry factors are presented.These parameters are calculated by using fitted formulation at the effective particles size of 20 μm and 120 μm.The simulation results show that,the extinction efficiencies,single-scattering albedo and asymmetry factors change evident with the incident wavelength;single-scattering albedo and asymmetry factors change identical with the incident wavelength;at the visible band,the single-scattering albedo tends to the value of 1 and the value of the asymmetry factors is small,as the incident wavelength increase,the asymmetry factors increases.