气候变化领域集成服务门户(CCPortal): The decreasing wind speed in southwestern China during 1969-2009, and possible causes

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DOI	10.1016/j.quaint.2012.02.020
	The decreasing wind speed in southwestern China during 1969-2009, and possible causes
	Yang Xiaomei; Li Zongxing; Feng Qi; He Yuanqing; An Wenlin; Zhang Wei; Cao Weihong; Yu Tengfei; Wang Yamin; Theakstone, Wilfred H.
发表日期	2012
ISSN	1040-6182
EISSN	1873-4553
卷号	263
英文摘要	Daily wind speed data from 110 stations in southwestern China were analyzed to determine trends, spatial differences and possible causes. There was a statistically significant decrease of 0.24 m/s per decade in the annual mean wind speed during the period 1969-2009. The decreasing trend was faster (0.37 m/s/10a) during 1969-2000. Between 2001 and 2009, there was a significant increase. The pattern of seasonal changes was similar. Stations with stronger, significant decreasing trends were mainly on the Xizang Plateau, the Hengduan Mountains and the Yunnan Plateau, and stations with significant increasing trends were mainly in the Sichuan basin, indicating the influence of altitude on wind speed. Surface wind speeds in southwestern China have been affected in recent years by both the changed large-scale atmospheric circulation and regional and global warming, while the weakening surface pressure gradient between high and low latitudinal regions may be an important contributor to the decreased wind speed under the asymmetric warming during 1969-2009. The data indicated a positive correlation between wind speed and sunshine duration suggesting another possible influencing factor. Topographical influences are evident in the higher annual and seasonal trends at summit and inter-montane basin stations and the lower trends at valley stations. (C) 2012 Elsevier Ltd and INQUA. All rights reserved.
学科领域	Physical Geography; Geology
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
来源期刊	QUATERNARY INTERNATIONAL
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111672
作者单位	Natl Sci Lib, Sci Informat Ctr Resources & Environm, Lanzhou Branch, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang Xiaomei,Li Zongxing,Feng Qi,et al. The decreasing wind speed in southwestern China during 1969-2009, and possible causes[J]. 中国科学院西北生态环境资源研究院,2012,263.
APA	Yang Xiaomei.,Li Zongxing.,Feng Qi.,He Yuanqing.,An Wenlin.,...&Theakstone, Wilfred H..(2012).The decreasing wind speed in southwestern China during 1969-2009, and possible causes.QUATERNARY INTERNATIONAL,263.
MLA	Yang Xiaomei,et al."The decreasing wind speed in southwestern China during 1969-2009, and possible causes".QUATERNARY INTERNATIONAL 263(2012).