气候变化领域集成服务门户(CCPortal): Large-scale circulation classification and its links to observed precipitation in the eastern and central Tibetan Plateau

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DOI	10.1007/s00382-015-2782-z
	Large-scale circulation classification and its links to observed precipitation in the eastern and central Tibetan Plateau
	Liu, Wenbin; Wang, Lei; Chen, Deliang; Tu, Kai; Ruan, Chengqing; Hu, Zengyun
通讯作者	Liu, WB (通讯作者)
发表日期	2016
ISSN	0930-7575
EISSN	1432-0894
起始页码	3481
结束页码	3497
卷号	46 期号:11-12
英文摘要	The relationship between the large-scale circulation dynamics and regional precipitation regime in the Tibetan Plateau (TP) has so far not been well understood. In this study, we classify the circulation types using the self-organizing maps based on the daily field of 500 hPa geopotential height and link them to the precipitation climatology in the eastern and central TP. By virtue of an objective determining method, 18 circulation types are quantified. The results show that the large amount of precipitation in summer is closely related to the circulation types in which the enhanced and northward shifted subtropical high (SH) over the northwest Pacific and the obvious cyclconic circulation anomaly over the Bay of Bengal are helpful for the Indian summer monsoon and East Asian summer monsoon to take abundant low-latitude moisture to the eastern and southern TP. On the contrary, the dry winter in the central and eastern Tibet corresponds to the circulation types with divergence over the central and eastern TP and the water vapor transportations of East Asian winter monsoon and mid-latitude westerly are very weak. Some circulation types are associated with some well-known circulation patterns/monsoons influencing the TP (e.g. East Atlantic Pattern, El Nino Southern Oscillation, Indian Summer Monsoon and the mid-latitude westerly), and exhibit an overall good potential for explaining the variability of regional seasonal precipitation. Moreover, the climate shift signals in the late 1970s over the eastern Pacific/North Pacific Oceans could also be reflected by both the variability of some circulation types and their correspondingly composite precipitations. This study extends our understandings for the large-scale atmospheric dynamics and their linkages with regional precipitation and is beneficial for the climate change projection and related adaptation activities in the highest and largest plateau in the world.
关键词	SELF-ORGANIZING MAPS INTERANNUAL VARIABILITY TELECONNECTION PATTERNS SUMMER PRECIPITATION SYNOPTIC PATTERNS CONTINUUM PROSPECTS RAINFALL MONSOON EVENTS
英文关键词	Self-organizing maps; Circulation classification; Precipitation; Tibetan Plateau; ENSO; Climate change
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000381108600008
来源期刊	CLIMATE DYNAMICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258770
推荐引用方式 GB/T 7714	Liu, Wenbin,Wang, Lei,Chen, Deliang,et al. Large-scale circulation classification and its links to observed precipitation in the eastern and central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,46(11-12).
APA	Liu, Wenbin,Wang, Lei,Chen, Deliang,Tu, Kai,Ruan, Chengqing,&Hu, Zengyun.(2016).Large-scale circulation classification and its links to observed precipitation in the eastern and central Tibetan Plateau.CLIMATE DYNAMICS,46(11-12).
MLA	Liu, Wenbin,et al."Large-scale circulation classification and its links to observed precipitation in the eastern and central Tibetan Plateau".CLIMATE DYNAMICS 46.11-12(2016).