基于多重散射的卷云辐射传输特性

采用空间离散化，并利用散射矩阵方法计算了卷云在3．72tim和6．85tim波长上的辐射传输特性，研究了卷云的冰晶粒子形状、组分和光学厚度等因素对卷云的辐射传榆特性的影响。仿真结果表明，随着平均冰晶尺度的增加，卷云的反射函数会逐渐减小；对于不同形状，但具有相同最大粒子尺寸的粒子组成的卷云，反射函数也会有所不同；随着光学厚度的增加，卷云的反射函数会逐渐增大，直至饱和，而透射函数逐渐减小；随着太阳天顶角的增大，卷云的反射函数逐渐增大。透射函数逐渐减小。

Radiation Transmission Properties of Cirrus Based on Multiple Scattering

Radiation transmission properties were computed by space discretization and the method of scattering matrix, researching the affect of ice particle shape, average size and optical thickness etc. to radiation transmission properties of cirrus. With the increase in the average size of ice crystals, the reflection function of cirrus reduced gradually. For the cirrus with the same maximum particle size and different ice particle shapes, the reflection function of cirrus is different. With the increase in optical thickness, the reflection function of cirrus increased gradually until the saturation, and the transmission function reduced. With the increase inthe angle, the reflection function of cirrus increased gradually too, but the transmission function reduced.