干旱区生态环境知识资源中心(Arid): The effect analysis of three-dimensional divergence and its vertical gradient on convection initiation

Arid

DOI	10.3389/feart.2023.1143767
	The effect analysis of three-dimensional divergence and its vertical gradient on convection initiation
	Zhou, Kuo; Ran, Lingkun; Zhang, Wancheng; Tian, Liqing; Chen, Lei; Liu, Haiwen
通讯作者	Ran, LK
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2023
卷号	11
英文摘要	A severe convection process occurred in southern Xinjiang during June 15-17, 2021. Here, the convection initiation mechanism is revealed by analyzing the impacts of three-dimensional divergence (? . V) on the changes in pressure and the vertical pressure gradient force (VPGF). The pressure tendency equation and vertical pressure gradient force equation are derived based on three-dimensional divergence. It is shown that three-dimensional divergence has a better correlation with precipitation. The local change in pressure is affected mainly by the three-dimensional divergence forcing term. The air mass accumulates in the lower layers because of the three-dimensional convergence in the windward slope, strengthening the positive pressure change tendency. Three-dimensional convergence in the lower layers converts to divergence with height, leading to air mass loss in the upper layers. The air mass redistributes vertically owing to the positive vertical gradient of three-dimensional divergence, which motivates the upward VPGF. The local change in VPGF is highly correlated with the vertical velocity. The vertical velocity increases as the upward VPGF strengthens, resulting in convection initiation in southern Xinjiang.
英文关键词	three-dimensional divergence pressure vertical pressure gradient force vertical velocity convection initiation
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:000984573900001
WOS关键词	ARID REGION ; PRECIPITATION ; CONVERGENCE ; VORTICITY ; RAINFALL ; TEMPERATURE ; CHINA
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/2XILL650/396479
推荐引用方式 GB/T 7714	Zhou, Kuo,Ran, Lingkun,Zhang, Wancheng,et al. The effect analysis of three-dimensional divergence and its vertical gradient on convection initiation[J],2023,11.
APA	Zhou, Kuo,Ran, Lingkun,Zhang, Wancheng,Tian, Liqing,Chen, Lei,&Liu, Haiwen.(2023).The effect analysis of three-dimensional divergence and its vertical gradient on convection initiation.FRONTIERS IN EARTH SCIENCE,11.
MLA	Zhou, Kuo,et al."The effect analysis of three-dimensional divergence and its vertical gradient on convection initiation".FRONTIERS IN EARTH SCIENCE 11(2023).