Properties of Cloud and Precipitation over the Tibetan Plateau  

作　　者：WANG Chenghai SHI Hongxia HU Haolin WANG Yi XI Baike 

机构地区：[1]Key Laboratory of Arid Climate Change and Disaster Reduction of Gansu Province,College of Atmospheric Sciences,Lanzhou University [2]Troop 93212,The People's Liberation Army [3]Department of Atmospheric Sciences,University of North Dakota,4149 University Ave.

出　　处：《Advances in Atmospheric Sciences》2015年第11期1504-1516,共13页大气科学进展（英文版）

基　　金：supported by the National Key Basic Research Program of China(2013CBA01808);National Natural Science Foundation of China(Grant Nos.91437217,41275061,and 41440035)

摘　　要：The characteristics of seasonal precipitation over the Tibetan Plateau （TP） were investigated using TRMM （Tropical Rain- fall Measuring Mission） precipitation data （3B43）. Sensitive regions of summer precipitation interannual variation anomalies were investigated using EOF （empirical orthogonal function） analysis. Furthermore, the profiles of cloud water content （CWC） and precipitable water in different regions and seasons were analyzed using TRMM-3A12 data observed by the TRMM Microwave Imager. Good agreement was found between hydrometeors and precipitation over the eastern and southeastern TP, where water vapor is adequate, while the water vapor amount is not significant over the western and northern TE Further analysis showed meridional and zonal anomalies of CWC centers in the ascending branch of the Hadley and Walker Circulation, especially over the south and east of the TE The interannual variation of hydrometeors over the past decade showed a decrease over the southeastern and northwestern TP, along with a corresponding increase over other regions.The characteristics of seasonal precipitation over the Tibetan Plateau （TP） were investigated using TRMM （Tropical Rain- fall Measuring Mission） precipitation data （3B43）. Sensitive regions of summer precipitation interannual variation anomalies were investigated using EOF （empirical orthogonal function） analysis. Furthermore, the profiles of cloud water content （CWC） and precipitable water in different regions and seasons were analyzed using TRMM-3A12 data observed by the TRMM Microwave Imager. Good agreement was found between hydrometeors and precipitation over the eastern and southeastern TP, where water vapor is adequate, while the water vapor amount is not significant over the western and northern TE Further analysis showed meridional and zonal anomalies of CWC centers in the ascending branch of the Hadley and Walker Circulation, especially over the south and east of the TE The interannual variation of hydrometeors over the past decade showed a decrease over the southeastern and northwestern TP, along with a corresponding increase over other regions.

关 键 词：cloud liquid water content cloud ice water content precipitable liquid water Tibetan Plateau 

分 类 号：P426[天文地球—大气科学及气象学]