冰晶粒子散射理论模型  

Model of scattering theroy of ice crystal particles

作　　者：贺秀兰[1] 吴健[1] 杨春平[1] 

机构地区：[1]电子科技大学光电信息学院,四川成都610054

出　　处：《红外与激光工程》2006年第z3期385-389,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金委-中国工程物理研究院联合基金(10376007)

摘　　要：由于卷云几乎覆盖了地球表面的20%,卷云中各种形状的冰晶粒子对光的吸收与散射对卫星通信、大气和地面温度等有重要影响。从米氏理论适合均匀球形粒子散射模型出发,把冰晶粒子简化为轴对称形状和球形状的粒子,以单个冰晶粒子为研究对象,引进边界条件和谐波成分,建立 T 矩阵模型,并和经典米氏理论的严格解比较,得出 T 矩阵理论用于解决高层卷云冰晶粒子散射问题与经典米氏理论解的一致性结论。Due to the earth surface is covered about 20% by cirrus clouds,ice crystal particles of various shape in the cirrus clouds which absorb and scatter to light effect on satellite communication,temperature of atmosphere and earth surface etc.severely.Based on Mie theory adapting to scatterer of homogeneous spherical particles,ice crystals are predigested axisymmetric shape or sphericity.Selecting a single particle to be a studying object, introducing into boundary conditions and humorous-waves component,a T-matrix model is set up,which is compared with classical Mie theory strict key,as a result,there is a coherence that is T-matrix theory fit into solving scattering problems of ice crystal particles in high-sky cirrus clouds.

关 键 词：卷云 冰晶单粒子 散射 T矩阵 MIE理论 

分 类 号：P4[天文地球—大气科学及气象学] O43[机械工程—光学工程]