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DOI	10.1002/joc.3807
	Observed surface wind speed in the Tibetan Plateau since 1980 and its physical causes
	You, Qinglong; Fraedrich, Klaus; Min, Jinzhong; Kang, Shichang; Zhu, Xiuhua; Pepin, Nick; Zhang, Ling
发表日期	2014
ISSN	0899-8418
EISSN	1097-0088
卷号	34 期号:6
英文摘要	Climate warming on the Tibetan Plateau (TP) potentially influences many climate parameters other than temperature including wind speed, cloudiness and precipitation. Temporal trends of surface wind speed at 71 stations above 2000 m above sea level in the TP are examined during 1980-2005. To uncover causes of observed trends in wind speed, relationships with surface temperature, a TP index and sunshine duration are also analysed. The TP index is calculated as the accumulated 500 hPa geopotential height above 5000 m over the region of 30 degrees N-40 degrees N, 75 degrees E-105 degrees E from NCEP/NCAR reanalysis. The annual mean wind speed patterns during 1980-2005 are similar to those in different seasons, with higher wind speeds in the northern and western parts of the TP. Highest mean wind speeds occur in spring and lowest in autumn. During 1980-2005, annual and seasonal mean wind speeds show statistically decreasing trends at most stations. The mean trend magnitude for annual mean wind speed is -0.24 m s(-1) decade(-1), with the maximum decline in spring (-0.29 m s(-1) decade(-1)) and minimum in autumn (-0.19 m s(-1) decade(-1)). Both annually and in different seasons, wind speed is significantly negatively correlated with mean temperature, minimum temperature, maximum temperature, and the TP index, but significantly positively correlated with sunshine duration. Wind speed trends fail to show a simple elevation dependency but speeds are positively correlated with meridional surface temperature/pressure gradients. Warming in the TP may weaken the latitudinal gradients of both regional temperature and surface pressure, thus altering the regional atmospheric circulation and accounting in part for the observed decline of wind speed.
关键词	Tibetan Plateau wind speed Tibetan Plateau index Mann-Kendall analysis
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
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/111719
作者单位	Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	You, Qinglong,Fraedrich, Klaus,Min, Jinzhong,et al. Observed surface wind speed in the Tibetan Plateau since 1980 and its physical causes[J]. 中国科学院西北生态环境资源研究院,2014,34(6).
APA	You, Qinglong.,Fraedrich, Klaus.,Min, Jinzhong.,Kang, Shichang.,Zhu, Xiuhua.,...&Zhang, Ling.(2014).Observed surface wind speed in the Tibetan Plateau since 1980 and its physical causes.INTERNATIONAL JOURNAL OF CLIMATOLOGY,34(6).
MLA	You, Qinglong,et al."Observed surface wind speed in the Tibetan Plateau since 1980 and its physical causes".INTERNATIONAL JOURNAL OF CLIMATOLOGY 34.6(2014).