干旱区生态环境知识资源中心(Arid): Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China

Arid

DOI	10.3389/feart.2022.931916
	Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China
	Sun, Wenxuan; Jiang, Youyan; Chen, Jizu; Du, Wentao; Lian, Lishu; Song, Linlin; Hu, Yuling; Cheng, Zhen; Zhou, Xiyin; Kang, Shichang; Wu, Jichun
通讯作者	Jiang, YY ; Chen, JZ
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2022
卷号	10
英文摘要	Investigation of extreme precipitation events in arid and semiarid regions, especially for occurrence time and the associated circulation mechanisms, is vital to support the forecasting of and the advanced response to resultant disasters. In this study, the spatiotemporal pattern of occurrence time of extreme precipitation and atmospheric circulation mechanisms in the Arid Region of Northwest China (ARNC) were analyzed using two indicators (precipitation concentration degree and period) and the climate diagnosis method. Results showed that the significant scattered pattern of extreme precipitation occurrence time (EPOT) in Northern Xinjiang and the postponed pattern of maximum extreme precipitation occurrence (MEPO) from southern to northern Xinjiang are consistent with the input pathway of the Arctic air mass. During the anomaly dispersion year of EPOT and the anomaly delay year of MEPO, the Arctic air mass carried sufficient water vapor is transported to ARNC for triggering extreme precipitation events. Meanwhile, the pattern of concentration-dispersion-concentration in eastern ARNC demonstrates interaction between the westerlies and the summer monsoon. Sufficient water vapor is transported to southwestern ARNC by the southwest monsoon during the anomaly delay year of MEPO and the anomaly concentration year of EPOT. The findings of this study suggest that invasion of the Arctic air mass and the summer monsoon could influence extreme precipitation in ARNC.
英文关键词	extreme precipitation concentration degree concentration period spatiotemporal pattern circulation mechanism
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:000833982100001
WOS关键词	SUMMER PRECIPITATION ; QILIAN MOUNTAINS ; CLIMATE-CHANGE ; WESTERLY JET ; TEMPERATURE ; MONSOON ; EVENTS ; ASSOCIATION ; VARIABILITY ; RAINFALL
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/2XILL650/392686
推荐引用方式 GB/T 7714	Sun, Wenxuan,Jiang, Youyan,Chen, Jizu,et al. Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China[J],2022,10.
APA	Sun, Wenxuan.,Jiang, Youyan.,Chen, Jizu.,Du, Wentao.,Lian, Lishu.,...&Wu, Jichun.(2022).Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China.FRONTIERS IN EARTH SCIENCE,10.
MLA	Sun, Wenxuan,et al."Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China".FRONTIERS IN EARTH SCIENCE 10(2022).