摘要
卷云一般分布在对流层上部到平流层下部,主要由各种形状的冰晶粒子组成。卷云散射特性的研究利用了前期建立的单个冰晶粒子散射性质数据库,并且假定卷云中粒子谱分布符合Γ分布,计算得出可见光波段卷云平均散射性质:消光效率因子、吸收效率因子、单次散射反照率、非对称因子与有效尺度以及波长的变化关系。其次对计算得出的变化曲线进行分析得出了对应结论。卷云散射特性的研究对MODIS卫星遥感反演卷云的光学厚度,以及其他卫星遥感数据校正具有非常重要的指导意义。
Cirrus clouds generally lie from the area of above troposphere to the area of below stratosphere, mainly made up of various shapes of ice. In the paper, the database was found on the scattering properties of the single ice partiele in early stage. And then the particle size distribution in cirrus clouds is assumed to be consistent with the function P. The average Scattering properties of cirrus clouds in visible light can be calculated by the function.The parameters on properties, such a~ the extinction efficiency factor, absorption efficiency factor, single scattering albedo and asymmetric factor, have the change relations with effect size and wavelength. So the conclusions can be got from the change curves through the calculating. The study has a very important significance on optical thickness of MODIS satellite remote sensing of the cirrus clouds, and correction of other satellite remote sensing data.
出处
《光学与光电技术》
2011年第6期25-28,共4页
Optics & Optoelectronic Technology
基金
军事预研基金
关键词
冰晶粒子
卷云
散射性质
可见光
ice particles
cirrus
scattering properties
visible light
