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Effects of the South Asian summer monsoon anomaly on interannual variations in precipitation over the South-Central Tibetan Plateau

文献类型：期刊论文

作者Zhu, Yanxin1,2; Sang, Yan-Fang1; Chen, Deliang3; Sivakumar, Bellie4; Li, Donghuan1
刊名ENVIRONMENTAL RESEARCH LETTERS
出版日期2020-12-01
卷号15期号:12页码:13
关键词Tibetan Plateau precipitation anomaly South Asian summer monsoon water vapor transport moisture budget analysis
ISSN号1748-9326
DOI10.1088/1748-9326/abc71b
通讯作者Sang, Yan-Fang(sangyf@igsnrr.ac.cn)
英文摘要An anomalous South Asian summer monsoon (SASM) system could generate a large anomaly in precipitation and hydrological disasters in the SASM-prevailing area, as widely reported for the Indian Peninsula. However, how the SASM system influences the precipitation anomaly over the South-Central Tibetan Plateau (SCTP) is largely unknown. In this study, we (a) analyze the influences of the early and late onset (demise) of the SASM on the interannual variations in precipitation over the SCTP during 1979-2015; and (b) illuminate the underlying mechanisms and asymmetric effects with regard to the onset and demise of the SASM by analyzing the characteristics of water vapor transport and moisture budgets in this region. Results indicate that the precipitation anomaly over the SCTP is dominated by the cyclonic and anticyclonic water vapor transport associated with the anomalous SASM activities, causing moisture convergence and divergence in this region. The topographic effect in the southeastern Tibetan Plateau (SETP) and southwestern Tibetan Plateau (SWTP) further strengthens the anomaly in water vapor transport in vertical direction and contributes to the precipitation anomaly through moisture convergence and divergence. The anomalous SASM and topography exhibit asymmetric effects between the onset and demise as well as between the early and late onset (demise) of the SASM. They cause 23.41%, 15.91%, and 1.96% difference in precipitation between the early and late SASM-onset years, and 13.05%, 21.50%, and 29.86% difference in precipitation between the early and late SASM-demise years in the SETP, central Tibetan Plateau (CETP), and SWTP, by regulating the horizontal and vertical thermodynamic and dynamic processes. The results help improve our understanding of the SASM-precipitation relationship over the SCTP and guide the prediction of precipitation and alleviation of water-related disasters in the region and its surroundings that are home to billions of people in Asia.
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0903] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060402] ; National Natural Science Foundation of China[91647110] ; National Natural Science Foundation of China[41971040] ; Youth Innovation Promotion Association CAS[2017074] ; Swedish National Space Agency[SNSA: 188/18] ; Swedish Research Council[VR: 2019-03954] ; CAS Interdisciplinary Innovation Team[JCTD-2019-04]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000615734700001
出版者IOP PUBLISHING LTD
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Swedish National Space Agency ; Swedish Research Council ; CAS Interdisciplinary Innovation Team
源URL[http://ir.igsnrr.ac.cn/handle/311030/136146]  
专题中国科学院地理科学与资源研究所
通讯作者Sang, Yan-Fang
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden
4.Indian Inst Technol, Dept Civil Engn, Mumbai 400076, Maharashtra, India
推荐引用方式
GB/T 7714		 Zhu, Yanxin,Sang, Yan-Fang,Chen, Deliang,et al. Effects of the South Asian summer monsoon anomaly on interannual variations in precipitation over the South-Central Tibetan Plateau[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(12):13.
APA Zhu, Yanxin,Sang, Yan-Fang,Chen, Deliang,Sivakumar, Bellie,&Li, Donghuan.(2020).Effects of the South Asian summer monsoon anomaly on interannual variations in precipitation over the South-Central Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,15(12),13.
MLA Zhu, Yanxin,et al."Effects of the South Asian summer monsoon anomaly on interannual variations in precipitation over the South-Central Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 15.12(2020):13.

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来源：地理科学与资源研究所

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