干旱区生态环境知识资源中心(Arid): Drivers of a sudden mesoscale rainstorm in arid and semi-arid regions at the edge of the western Pacific subtropical high

Arid

DOI	10.1002/met.1884
	Drivers of a sudden mesoscale rainstorm in arid and semi-arid regions at the edge of the western Pacific subtropical high
	Liu, Jing ; Zhang, Jinru ; Liu, Fan ; Yang, Lianmei 1,2
通讯作者	Yang, Lianmei
来源期刊	METEOROLOGICAL APPLICATIONS
ISSN	1350-4827
EISSN	1469-8080
出版年	2020
卷号	27 期号:2
英文摘要	An extreme rainstorm occurred in southeastern Hami in Xinjiang, China, on July 31, 2018. The region experienced maximum accumulated precipitation of 110 mm over 12 h, causing a flood that killed 20 people and left eight missing. The present study uses multiple data sources in order to conduct an in-depth analysis of this extreme rainfall event. Results show that the western Pacific subtropical high (WPSH) could directly impact the arid and semi-arid areas under the certain circulation patters. During the heavy rainfall period, the 500 hPa WPSH was anomalously northerly; several mesoscale cloud clusters generated in front of the 700 hPa Hexi corridor jet stream and then merged and developed along the 500 hPa steering flow. The atmosphere was conditionally unstable over the region, and unstable convective energy was triggered by warm frontogenesis at the low Troposphere. Warm frontal frontogenesis was determined by the horizontal divergence and the tilt term during convective initiation, and deformation and tilt terms as convective cloud at matured. Additionally, the intensification of the 700 hPa Hexi corridor southeasterly jet and topographic uplifting were responsible for the long-term persistence of the mesoscale convective system, which should be paid more attention by forecasters in the future forecasting of this region.
英文关键词	arid and semi-arid area mesoscale convective system western Pacific subtropical high trigger
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000530356200011
WOS关键词	EXTREME PRECIPITATION ; PART I ; RAINFALL ; SUMMER
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318864
作者单位	1.CMA, Inst Desert Meteorol, Urumqi, Peoples R China; 2.Ctr Cent Asia Atmosphere Sci Res, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jing,Zhang, Jinru,Liu, Fan,et al. Drivers of a sudden mesoscale rainstorm in arid and semi-arid regions at the edge of the western Pacific subtropical high[J],2020,27(2).
APA	Liu, Jing,Zhang, Jinru,Liu, Fan,&Yang, Lianmei.(2020).Drivers of a sudden mesoscale rainstorm in arid and semi-arid regions at the edge of the western Pacific subtropical high.METEOROLOGICAL APPLICATIONS,27(2).
MLA	Liu, Jing,et al."Drivers of a sudden mesoscale rainstorm in arid and semi-arid regions at the edge of the western Pacific subtropical high".METEOROLOGICAL APPLICATIONS 27.2(2020).