干旱区生态环境知识资源中心(Arid): Interdecadal variation and possible causes of summer extreme precipitation over northern Xinjiang province, northwestern China

Arid

DOI	10.1088/2515-7620/acec38
	Interdecadal variation and possible causes of summer extreme precipitation over northern Xinjiang province, northwestern China
	Li, Minggang; Zhao, Yong; Li, Yang; Meng, Lixia; Chen, Dong
通讯作者	Zhao, Y
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
ISSN	2515-7620
出版年	2023
卷号	5 期号:8
英文摘要	Using daily precipitation data from 25 stations, NCEP/NCAR reanalysis data, and 12 climate indices for boreal summers from 1963 to 2017, we investigate the interdecadal variation and causes of extreme precipitation in northern Xinjiang Province (NXJ), northwestern China. The summer frequency of daily precipitation extremes (DPEs), summer precipitation from DPEs, and contribution of precipitation from DPEs to total summer precipitation have increased significantly since the early 1990s, and this increase in extreme precipitation is more intense at stations in the eastern part of NXJ. Comparing the periods 1963-1988 and 1992-2017, the anomalous circulation over the Mongolian Plateau changed from cyclonic to anti-cyclonic, and the center of the anomalous cyclonic circulation over Central Asia shifted northward from the Iranian Plateau to the Aral Sea. These changes in anomalous circulation pattern induced changes in the paths of water vapor transport and the distribution of moisture convergence, which explain well the interdecadal increase in extreme precipitation and its spatial variability. Further analysis confirms evident impacts of the Indian Ocean basin mode (IOBM) and Scandinavia teleconnection pattern on the development of anomalous circulation related to the interdecadal increase in extreme precipitation. A positive IOBM favors the northward transport of moisture from the northern Indian Ocean to Xinjiang Province and the development of anomalous cyclonic circulation over Central Asia in the middle and upper troposphere. The negative phase of the Scandinavia pattern, which has prevailed since the late 1970s, and the enhanced out of phase connection between the anomalous circulation over Scandinavia Peninsula and the West Siberia during 1992-2017 favors the development of anomalous anti-cyclonic circulation over the Mongolian Plateau.
英文关键词	extreme precipitation interdecadal variation Indian Ocean basin mode scandinavia teleconnection pattern northern xinjiang province
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:001045930900001
WOS关键词	CENTRAL-ASIA ; TARIM BASIN ; ARID REGION ; RAINFALL ; TEMPERATURE ; DYNAMICS ; MONSOON
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396216
推荐引用方式 GB/T 7714	Li, Minggang,Zhao, Yong,Li, Yang,et al. Interdecadal variation and possible causes of summer extreme precipitation over northern Xinjiang province, northwestern China[J],2023,5(8).
APA	Li, Minggang,Zhao, Yong,Li, Yang,Meng, Lixia,&Chen, Dong.(2023).Interdecadal variation and possible causes of summer extreme precipitation over northern Xinjiang province, northwestern China.ENVIRONMENTAL RESEARCH COMMUNICATIONS,5(8).
MLA	Li, Minggang,et al."Interdecadal variation and possible causes of summer extreme precipitation over northern Xinjiang province, northwestern China".ENVIRONMENTAL RESEARCH COMMUNICATIONS 5.8(2023).