Climatology of Cloud Phase, Cloud Radiative Effects and Precipitation Properties over the Tibetan Plateau

被引:24
作者
Wang, Jing [1 ]
Jian, Bida [1 ]
Wang, Guoyin [2 ,3 ]
Zhao, Yuxin [1 ]
Li, Yarong [1 ]
Letu, Husi [4 ]
Zhang, Min [5 ]
Li, Jiming [1 ]
机构
[1] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China
[2] Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai 200000, Peoples R China
[3] Fudan Univ, Inst Atmospher Sci, Shanghai 200000, Peoples R China
[4] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100000, Peoples R China
[5] Inner Mongolia Prov Meteorol Bur, Inner Mongolia Inst Meteorol Sci, Hohhot 010000, Peoples R China
基金
国家重点研发计划; 美国国家科学基金会;
关键词
cloud phase; cloud radiative effect; cloud heating rate; precipitation frequency; cloud fraction; Tibet plateau;
D O I
10.3390/rs13030363
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Current passive sensors fail to accurately identify cloud phase, thus largely limiting the quantification of radiative contributions and precipitation of different cloud phases over the Tibet Plateau (TP), especially for the mixed-phase and supercooled water clouds. By combining the 4 years of (January 2007-December 2010) cloud phase (2B-CLDCLASS-LIDAR), radiative fluxes (2B-FLXHR-LIDAR), and precipitation (2C-PRECIP-COLUMN) products from CloudSat, this study systematically quantifies the radiative contribution of cloud phases and precipitation over the TP. Statistical results indicate that the ice cloud frequently occurs during the cold season, while mixed-phase cloud fraction is more frequent during the warm season. In addition, liquid clouds exhibit a weak seasonal variation, and the relative cloud fraction is very low, but supercooled water cloud has a larger cloud distribution (the value reaches about 0.24) than those of warm water clouds in the eastern part of the TP during the warm season. Within the atmosphere, the ice cloud has the largest radiative contribution during the cold season, the mixed-phase cloud is the second most important cloud phase for the cloud radiative contribution during the warm season, and supercooled water clouds' contribution is particularly important during the cold season. In particular, the precipitation frequency over the TP is mainly dominated by the ice and mixed-phase clouds and is larger over the southeastern part of the TP during the warm season.
引用
收藏
页码:1 / 21
页数:21
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