气候变化领域集成服务门户(CCPortal): Increased occurrence of two intrinsic atmospheric circulations in Asia during the boreal summer

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DOI	10.1002/joc.8488
	Increased occurrence of two intrinsic atmospheric circulations in Asia during the boreal summer
	Oh, Sae-Yoon; Yeh, Sang-Wook; Jeong, Yong-Cheol; Song, Hajoon; Lee, Min-Hee
发表日期	2024
ISSN	0899-8418
EISSN	1097-0088
英文摘要	The k-means clustering of reanalysis datasets is used to classify the intrinsic atmospheric circulation in Asia based on the daily geopotential height of 500 hPa during the boreal summer (June, July and August) for 1958-2020. Among the total clusters of atmospheric circulation patterns in Asia, two distinct clusters of atmospheric circulation are characterized by a significant increasing trend in occurrence. They correspond to different zonal wave numbers (1-2 vs. 3-4) of atmospheric circulation in the mid-to-high latitudes of the Northern Hemisphere, and their associated sea surface temperature structures are not the same in the tropical Pacific and the North Atlantic. Further analysis indicates that two clusters of atmospheric circulation alter the amount of summer monsoon precipitation in East Asia, and an increasing amount of precipitation in southern China in recent decades could be explained by the combined effect of an increasing trend in the frequency of occurrence of two clusters of atmospheric circulation. Finally, a long-term simulation of the Community Earth System Model version 2 suggests that anthropogenic forcing may be responsible for the increasing trend of occurrence of the two atmospheric circulations in Asia. There exit two distinct atmospheric circulations with their increasing occurrence frequency in Asia, which could be due to the anthropogenic forcing, during 1958-2020. They correspond to different zonal wave numbers of atmospheric circulations in the NH and SST structures. The combined effects lead to an increase of precipitation in southern China. image
英文关键词	anthropogenic forcing; atmospheric circulation; clusters; k-means clustering; linear trend
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001228600800001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300155
作者单位	Hanyang University; University of Houston System; University of Houston; Yonsei University; Pohang University of Science & Technology (POSTECH); Korea Polar Research Institute (KOPRI)
推荐引用方式 GB/T 7714	Oh, Sae-Yoon,Yeh, Sang-Wook,Jeong, Yong-Cheol,et al. Increased occurrence of two intrinsic atmospheric circulations in Asia during the boreal summer[J],2024.
APA	Oh, Sae-Yoon,Yeh, Sang-Wook,Jeong, Yong-Cheol,Song, Hajoon,&Lee, Min-Hee.(2024).Increased occurrence of two intrinsic atmospheric circulations in Asia during the boreal summer.INTERNATIONAL JOURNAL OF CLIMATOLOGY.
MLA	Oh, Sae-Yoon,et al."Increased occurrence of two intrinsic atmospheric circulations in Asia during the boreal summer".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2024).