摘要
该文对卷云和高层云分别构造了１５种冰晶尺度分布，３种云高和云厚，总共３０种冰水含量、９０种冰水程长模式．对尺度小于与大于３０μｍ的冰晶粒子的单次散射特性分别用表面积等效冰球Ｍｉｅ理论和射线光学理论进行计算．采用ｄｅｌｔａ－Ｅｄｄｉｎｇｔｏｎ法计算了在４种不同地面反射率下冰云的多重散射辐射传输特性，提出了冰云辐射特性的参数化公式，指出参数化公式可以用于气候模式或大气环流模式．
The 15 kinds of ice crystal size distributions, 3 kinds of cloud heights and thickness, 30 kinds of ice water contents and 90 kinds of ice water path models for cirrus (Ci) and altostratus (As) are constructed, respectively. The single scattering properties of ice crystal particles, with sizes larger or smaller than 30 μm, are derived based on Mie theory and ray optical theory. The multiple scattering radiation transmission properties of the ice clouds for 4 kinds of ground surface albedos are calculated by using delta Eddington method, and the new parameterization of ice cloud radiation characteristics is formulated. The formula can be used in climate model or atmospheric circulation model.
出处
《应用气象学报》
CSCD
北大核心
1997年第3期283-291,共9页
Journal of Applied Meteorological Science
基金
国家自然科学基金
关键词
冰云
短波辐射特征
参数化
云
Mie theory Ray optical theory Parameterization of radiation properties
