The decreasing wind speed in southwestern China during 1969-2009,and possible causes

doi:10.1061/j.quaint.2012.02.020

	The decreasing wind speed in southwestern China during 1969-2009,and possible causes
	Yang XM(杨小梅)
	2012
发表期刊	Quarternary International
期号	263 页码:71-84
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 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 significantincreasing 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 intermontane basin stations and the lower trends at valley stations.
DOI	10.1061/j.quaint.2012.02.020
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.las.ac.cn/handle/12502/8313
专题	中国科学院兰州文献情报中心_期刊编辑出版部
推荐引用方式 GB/T 7714	Yang XM. The decreasing wind speed in southwestern China during 1969-2009,and possible causes[J]. Quarternary International,2012(263):71-84.
APA	Yang XM.(2012).The decreasing wind speed in southwestern China during 1969-2009,and possible causes.Quarternary International(263),71-84.
MLA	Yang XM."The decreasing wind speed in southwestern China during 1969-2009,and possible causes".Quarternary International .263(2012):71-84.

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