气候变化领域集成服务门户(CCPortal): The evolution process of warm season intense regional rainfall events in Yaan

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DOI	10.1007/s00382-020-05168-8
	The evolution process of warm season intense regional rainfall events in Yaan
	Hu X.; Yuan W.; Yu R.; Zhang M.
发表日期	2020
ISSN	0930-7575
起始页码	3245
结束页码	3258
卷号	54
英文摘要	Accurate simulation and prediction of intense precipitation events require better understanding of their physical mechanisms. This study uses Yaan—a place with regional maximum rainfall in central China—to investigate the cause and process of intense precipitation. Hourly rain gauge records and the new ERA5 reanalysis are used to characterize the evolution process of warm season intense regional rainfall events (RREs) in Yaan and its associated three-dimensional circulation. Results show that before the start of the Yaan intense RREs, moderate rainfall amount (frequency) appears northeast of the key region. The rainfall then moves southward in the following several hours along the eastern periphery of the Tibetan Plateau where it reaches peak. It then moves to and end up in the south and southeast Sichuan Basin. The progression of the RREs is found to be associated with a counter-clockwise rotation of anomalous surface winds associated with a developing mesoscale surface low-pressure center, which is further associated with the southeastward progression of a large-scale synoptic scale wave. The easterly phase of the winds in the counter-clockwise rotation causes upslope motion perpendicularly toward the terrain that leads to maximum rainfall. The findings illustrate how large-scale circulations, mesoscale systems, and specific topographic features interact to create the RREs evolution in Yaan. © 2020, The Author(s).
英文关键词	Complex terrain; Intense precipitation; Multi-scale interaction; Regional rainfall event
语种	英语
scopus关键词	low pressure; mesoscale motion; precipitation intensity; raingauge; regional climate; surface wind; terrain; warming; China; Qinghai-Xizang Plateau; Sichuan; Yaan
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145535
作者单位	LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; LaSW, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China; School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States; International Center for Climate and Environmental Sciences/IAP, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Hu X.,Yuan W.,Yu R.,et al. The evolution process of warm season intense regional rainfall events in Yaan[J],2020,54.
APA	Hu X.,Yuan W.,Yu R.,&Zhang M..(2020).The evolution process of warm season intense regional rainfall events in Yaan.Climate Dynamics,54.
MLA	Hu X.,et al."The evolution process of warm season intense regional rainfall events in Yaan".Climate Dynamics 54(2020).