干旱区生态环境知识资源中心(Arid): A Spatial Cluster Analysis of Heavy Rains in China

Arid

DOI	10.1080/16742834.2011.11446897
	A Spatial Cluster Analysis of Heavy Rains in China
	Tu Kai; Yan Zhong-Wei; Wang Yi
通讯作者	Yan, ZW
来源期刊	ATMOSPHERIC AND OCEANIC SCIENCE LETTERS
ISSN	1674-2834
EISSN	2376-6123
出版年	2011
卷号	4 期号:1 页码:36-40
英文摘要	Clustered heavy rains (CHRs) defined using hierarchical cluster analysis based on daily observations of precipitation in China during 1960-2008 are investigated in this paper. The geographical pattern of CHRs in China shows three high-frequency centers-South China, the Yangtze River basin, and part of North China around the Bohai Sea. CHRs occur most frequently in South China with a mean annual frequency of 6.8 (a total of 334 times during 1960-2008). June has the highest monthly frequency (2.2 times/month with a total of 108 times during 1960-2008), partly in association with the Meiyu phenomenon in the Yangtze River basin. Within the past 50 years, the frequency of CHRs in China has increased significantly from 13.5 to 17.3 times per year, which is approximately 28%. In the 1990s, the frequency of CHRs often reached 19.1 times per year. The geographical extent of CHR has expanded slightly by 0.5 stations, and its average daily rainfall intensity has increased by 3.7 mm d(-1). The contribution of CHRs to total rainfall amount and the frequency of daily precipitation have increased by 63.1% and 22.7%, respectively, partly due to a significant decrease in light rains. In drying regions of North and Northeast China, the amounts of minimal CHRs have had no significant trend in recent years, probably due to warming in these arid regions enhancing atmospheric convectivity at individual stations.
英文关键词	cluster analysis heavy rain climate extremes geographical correlation
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000433691100007
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	中国科学院大气物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329848
作者单位	[Tu Kai; Yan Zhong-Wei] Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm East Asia, Beijing 100029, Peoples R China; [Wang Yi] Chinese Meteorol Adm, Natl Meteorol Ctr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Tu Kai,Yan Zhong-Wei,Wang Yi. A Spatial Cluster Analysis of Heavy Rains in China[J]. 中国科学院大气物理研究所,2011,4(1):36-40.
APA	Tu Kai,Yan Zhong-Wei,&Wang Yi.(2011).A Spatial Cluster Analysis of Heavy Rains in China.ATMOSPHERIC AND OCEANIC SCIENCE LETTERS,4(1),36-40.
MLA	Tu Kai,et al."A Spatial Cluster Analysis of Heavy Rains in China".ATMOSPHERIC AND OCEANIC SCIENCE LETTERS 4.1(2011):36-40.