中国及周边地区白天各类云及其水凝物变化特征研究  

Research on Different Types of Cloud and Variation Characteristics of Hydrometeors in Cloud over China and Its Neighborhood in Daytime

作　　者：李浩然[1] 孙学金[1] 王旻燕[2] 卫克晶[1] 张日伟[1] 刘磊[1] 李岩[1,3] 周永波[1] 

机构地区：[1]解放军理工大学气象海洋学院,南京211101 [2]中国气象局国家气象信息中心,北京100081 [3]西北核技术研究所,西安710024

出　　处：《高原气象》2015年第6期1625-1635,共11页Plateau Meteorology

基　　金：国家自然科学基金项目(41205125;41205016;41575020)

摘　　要：利用2011年12月至2013年11月CloudSat的2B-CLDCLASS和2B-CWC-RO产品分析了中国及周边地区白天各类云的云量和云水路径(CWP)分布特征,研究了该区域CWP的季节变化并分析了大尺度环流对我国CWP季节性变化的影响。结果表明,中国及周边地区单层云的年平均云量和CWP总体而言大于多层云,30°N是各类云云量和CWP的南北分界线,30°N以南地区云中水凝物含量相对较多;该区域的CWP受大尺度环流条件、水汽条件和地形影响较大,南北差异明显;西风气流的季节性变化对CWP的分布也具有重要影响。Based on the CloudSat 2B-CLDCLASS and 2B-CWC-RO data from December 2011 to November2013,the distribution of cloud amounts and cloud water path(CWP) for single layer and multi-layer respectively for different cloud types over China and its neighborhood in the daytime were analyzed.Also the researches on the seasonal variation of the cloud water path over this area and how the macroscale circulation affects the variation were performed.The results show that the annual mean cloud amounts and CWP of single layer are in general more than the cloud overlapping's over this area.The 30°N is a clear north/south boundary for cloud amounts and CWP,which are relatively high in the north.The CWP of this area is greatly influenced by macro scale circulation,water vapor condition and terrain,and shows a feature that the content of the hydrometeors in summer is more than that in winter.Besides,the distribution of CWP is affected by the seasonal variation of the Westerlies substantially.

关 键 词：CLOUDSAT 单层云 多层云 云水路径 

分 类 号：P426[天文地球—大气科学及气象学]