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

doi:10.1088/1748-9326/abc71b

	Effects of the South Asian summer monsoon anomaly on interannual variations in precipitation over the South-Central Tibetan Plateau
	Zhu, Yanxin 2,3; Sang, Yan-Fang 2; Chen, Deliang 1; Sivakumar, Bellie 4; Li, Donghuan 2
刊名	ENVIRONMENTAL RESEARCH LETTERS
	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
DOI	10.1088/1748-9326/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
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000615734700001
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
内容类型	期刊论文
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.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 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.