摘要
水云出现在对流层的中下层,一般由球形液态水滴组成,是陆地大气太阳辐射通量的重要调节者之一。水云的散射特性在气候模式、辐射传输和遥感领域都具有非常重要的应用。利用Mie理论首先计算了不同大小的单个水云粒子的单次散射特性。再根据90种实际观测的水云粒子尺度谱分布,建立了一个水云在光学波段(紫外到远红外)的平均散射特性数据库。利用这个数据库,分析了8种常用的典型水云的单次散射特性分布,以及在可见到近红外、中波红外和长波红外三个波段的平均透过率特性。
The water clouds, which are mainly composed of spherical liquid water droplets, are commonly found in the middle troposphere and lower troposphere. They have a major impact on solar radiation flux. Scattering properties of water clouds are important to climatic model, radiative transfer, remote sensing and so on. Single scattering properties of single water cloud particle are calculated by using Mie theory. Then, the database of mean single-scattering properties from ultraviolet to far-infrared are built up based on 90 kinds of particle size distributions according to actual observation. In addition, the mean single scatting properties and extinction properties in visible to near infrared, middle infrared and long infrared wave bands of 8 typical water clouds are analyzed.
出处
《激光与红外》
CAS
CSCD
北大核心
2010年第1期51-56,共6页
Laser & Infrared
基金
中国科学院合肥物质科学研究院青年人才基金资助
关键词
水云
单次散射特性
有效半径
尺度谱分布
water clouds
scattering properties
effective radius
size distribution
