干旱区生态环境知识资源中心(Arid): Heavy precipitation events in northwestern China induced by northeastward plateau vortex: Two cases comparison

Arid

DOI	10.3389/feart.2022.965005
	Heavy precipitation events in northwestern China induced by northeastward plateau vortex: Two cases comparison
	Huang, Yujing; Ma, Xulin; Ma, Yue; Qing, Yiyu
通讯作者	Ma, XL
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2022
卷号	10
英文摘要	The plateau vortex is one of the dominant weather systems that modulate summer rainfall in northwestern China, a typical arid/semi-arid area worldwide. Two heavy rainfall cases in the summer of 2012 and 2013, accompanying the northeastward movement of plateau vortexes, are selected here. The role of plateau vortexes in these two cases is explored by diagnosing their moist potential vorticity, helicity, and convective clouds characteristics, using numerous data (ERA-Interim reanalysis, multi-sourced precipitation data, FY-2E satellite images). The plateau vortexes enhanced convective instability in the rainfall area by entraining upper-level dry and cold air, manifested as salient vertical gradients of moist potential vorticity and steep pseudo-equivalent potential temperature isolines. The rainfall occurred eastward relative to the vortex movement track and intensified on the left of cloud black body temperature (TBB) with larger gradients at the middle to late stages of the vortex life span. The generation of moisture helicity is dictated by the water vapor transportation, with the negative value concentrated in the water vapor-rich areas. Notably, the two cases differ in tracks, life spans, water vapor sources, and precipitation amounts, which may be attributed to large-scale circulation background, vertical vortex structure, and moisture condition.
英文关键词	plateau vortex moving northeastward heavy precipitation diagnostic analysis moist potential vorticity helicity
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000838839100001
WOS关键词	TIBETAN PLATEAU ; HELICITY ; VORTICES
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392688
推荐引用方式 GB/T 7714	Huang, Yujing,Ma, Xulin,Ma, Yue,et al. Heavy precipitation events in northwestern China induced by northeastward plateau vortex: Two cases comparison[J],2022,10.
APA	Huang, Yujing,Ma, Xulin,Ma, Yue,&Qing, Yiyu.(2022).Heavy precipitation events in northwestern China induced by northeastward plateau vortex: Two cases comparison.FRONTIERS IN EARTH SCIENCE,10.
MLA	Huang, Yujing,et al."Heavy precipitation events in northwestern China induced by northeastward plateau vortex: Two cases comparison".FRONTIERS IN EARTH SCIENCE 10(2022).