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The decreasing wind speed in southwestern China during 1969-2009,and possible causes
Yang XM(杨小梅)
2012
Source PublicationQuarternary International
Issue263Pages:71-84
AbstractDaily 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.
DOI10.1061/j.quaint.2012.02.020
Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.las.ac.cn/handle/12502/8313
Collection中国科学院兰州文献情报中心_期刊编辑出版部
Recommended Citation
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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