气候变化领域集成服务门户(CCPortal): The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train

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DOI	10.1016/j.accre.2022.11.001
	The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train
	Huang, Si-Hua; Wen, Zhi-Ping; Chen, Xiao-Dan; Guo, Yuan -Yuan; Wang, Zhe-Wen
发表日期	2022
ISSN	1674-9278
起始页码	819
结束页码	825
卷号	13 期号:6 页码:7
英文摘要	The synoptic-scale wave train is a dominant pattern of the synoptic variability over the tropical western Pacific and usually affects the extreme weather over South China and Southeast Asia. Whether it could extend its influence and contribute to the Henan extreme rainfall in July 2021 still needs to be unraveled. We found that during the Henan extreme rainfall days a positively synoptic-scale vorticity disturbance dominated Henan province, China, which was embedded in the synoptic-scale wave train that originated from the western North Pacific. Moreover, the propagating pathway of this synoptic-scale wave train located northward and was likely modulated by the latitudinal location change of the monsoon trough over the western North Pacific. A northernmost displacement of the monsoon trough in July 2021 (similar to 23.2 degrees N) would facilitate the synoptic-scale wave train to propagate farther northwestward via shifting the related barotropic conversion northward. Therefore, the synoptic-scale wave train from the tropics could reach Henan, provide the necessary lifting forcing, and supply abundant water vapor associated with the anomalous southerly for the occurrence of Henan extreme rainfall event. The results implicate that the pre-existing synoptic-scale wave train regulated by the location of the monsoon trough may be a potential precursor for heavy rainfalls in northern Central China.
英文关键词	Extreme rainfall; Northern Central China; Synoptic-scale wave train; Monsoon trough; Barotropic energy conversion
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000925609800001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273999
作者单位	Fudan University; Fudan University
推荐引用方式 GB/T 7714	Huang, Si-Hua,Wen, Zhi-Ping,Chen, Xiao-Dan,et al. The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train[J],2022,13(6):7.
APA	Huang, Si-Hua,Wen, Zhi-Ping,Chen, Xiao-Dan,Guo, Yuan -Yuan,&Wang, Zhe-Wen.(2022).The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train.ADVANCES IN CLIMATE CHANGE RESEARCH,13(6),7.
MLA	Huang, Si-Hua,et al."The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train".ADVANCES IN CLIMATE CHANGE RESEARCH 13.6(2022):7.