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《Journal of Baoji University of Arts and Sciences(Natural Science Edition)》 2013-02
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The characteristics of wind field at different altitudes on the mountains in Fengxian County,Shaanxi Province

GU Ying 1,NIE yi-jun2,ZHANG Zhang-quan3(1.The Meteorological Observatory of Baoji Unit 96401,Baoji 721000,Shaanxi,China;2.Meixian County Meteorological Bureau,Meixian 722300,Shaanxi,China;3.College of Geography &Environment,Baoji Univ.Arts &Sci.,Baoji 721013,Shaanxi,China)  
Objective—To analyze the characteristics of wind field at different altitudes on the mountains in Fengxian County to provide the basis for the utilization of wind energy resources in Qinling Mountains.Methods—Through building intensive wind observation stations at different altitudes,the data were obtained by continuous parallel observation and counted according to the requirements of technical assessment of wind energy resources,in addition,the characteristics of wind fields at different altitude was analyzed with the data comparison method.Results and Conclusion—The wind speed and direction in the territory of Fengxian county are not only influenced by atmospheric circulation and large-scale weather background but also closely related to large-,middle-and small-scale topographies.The average wind speed increases with the increase of elevation and the wind speed is higher in winter and spring,while lower in summer and autumn.The diurnal variation of average wind speed at different altitudes is wide,and the diurnal variation of average wind speed in the stations between at high altitude and at low altitude shows reverse phase,and negative shear phenomena emerges in the stations at high altitude and at middle altitude.The wind direction is affected considerably by topographies and different observation stations.
【CateGory Index】: P425
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