气候变化领域集成服务门户(CCPortal): Roles of Tibetan Plateau vortices in the heavy rainfall over southwestern China in early July 2018

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DOI	10.1016/j.atmosres.2020.105059
	Roles of Tibetan Plateau vortices in the heavy rainfall over southwestern China in early July 2018
	Li L.; Zhang R.; Wu P.; Wen M.; Duan J.
发表日期	2020
ISSN	0169-8095
卷号	245
英文摘要	Tibetan Plateau vortices (TPVs), generated over the Tibetan Plateau, are important rainfall triggers in southwestern and eastern China when moving off the plateau. The heavy rainfall event that occurred over southwestern China in early July 2018 caused severe floods and landslides, leading to substantial damage to normal production and life. In this work, the roles of TPVs in the rainfall are investigated based on NCEP FNL (final) operational global analysis and forecast data from the Global Data Assimilation System (GDAS). The results show that TPVs over the eastern Tibetan Plateau favor ascending motion to the east of the plateau, which is conducive to precipitation and therefore the genesis of southwest vortices (SWVs). Generally, the ascending motion in southwestern China is stronger when TPVs exist, compared with the other scenarios in which the TPVs are absent. Ascending motion is always observed on the east side of TPVs, which is greatly attributed to the positive vertical vorticity and warm centers in the TPVs. In this fashion, the influence of TPVs is not merely limited around their centers, but further eastward. Therefore, the effects of TPVs may have been underestimated in previous investigations; the TPVs located over the eastern Tibetan Plateau that do not move off the plateau should also be seriously considered in future precipitation predictions. © 2020 Elsevier B.V.
关键词	Vortex flow Eastern China Eastern Tibetan plateau Global analysis Global data assimilation system Heavy rainfall Precipitation predictions Tibetan Plateau Vertical vorticity Rain atmospheric motion climate modeling data assimilation precipitation (climatology)rainfall vortex vorticity weather forecasting China Qinghai-Xizang Plateau
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132388
推荐引用方式 GB/T 7714	Li L.,Zhang R.,Wu P.,et al. Roles of Tibetan Plateau vortices in the heavy rainfall over southwestern China in early July 2018[J]. Atmospheric Research,2020,245.
APA	Li L.,Zhang R.,Wu P.,Wen M.,&Duan J..(2020).Roles of Tibetan Plateau vortices in the heavy rainfall over southwestern China in early July 2018.,245.
MLA	Li L.,et al."Roles of Tibetan Plateau vortices in the heavy rainfall over southwestern China in early July 2018".245(2020).