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冰水混合云对可见光的吸收和散射特性
引用本文:孙贤明,韩一平.冰水混合云对可见光的吸收和散射特性[J].物理学报,2006,55(2):682-687.
作者姓名:孙贤明  韩一平
作者单位:(1); (2)西安电子科技大学 理学院 应用物理系,西安 710071
基金项目:教育部新世纪优秀人才支持计划
摘    要:根据Mie理论,分别计算了由纯水、纯冰和冰-水同心球形粒子构成的云层在可见光波段的单次散射特性. 根据辐射传输理论,利用叠加法数值计算了这三种不同构成的云层的反射函数,以及它们的平面反照率、透过率和吸收率. 结果表明,冰云和冰_水云的反射函数和平面反照率在大部分散射角下要略小于水云,而透过率却比水云的大. 通过具体的数值计算结果和理论分析,研究了水云的异常吸收现象. 关键词: 冰_水粒子 Mie理论 叠加法 光散射

关 键 词:冰_水粒子  Mie理论  叠加法  光散射
文章编号:1000-3290/2006/55(02)/0682-06
收稿时间:05 10 2005 12:00AM
修稿时间:2005-05-102005-06-15

Absorption and scattering of light by ice-water mixed clouds
Sun Xian-Ming,Han Yi-Ping.Absorption and scattering of light by ice-water mixed clouds[J].Acta Physica Sinica,2006,55(2):682-687.
Authors:Sun Xian-Ming  Han Yi-Ping
Abstract:Based on the Mie theory, the light scattering properties in the visible regions of clouds consisting of pure water, pure ice spheres and concentric water-ice spheres are computed respectively. The reflection function and plane albedo, transmissivity, absorptivity of the three types of clouds are evaluated with the addlng-doubling method by solving the radiative transfer equation. The numerical results show that the reflection function and plane albedo of ice clouds and ice-water clouds are slightly less than those of water clouds at most scattering angles, when the transmissivity is larger. A detailed theoretical analysis of the numerical results is presented, which explains the phenomenon of cloud absorption anomaly.
Keywords:ice_water particles  Mie theory  adding_doubling method  light scattering
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