河北省风能详查区风速日变化特征  

Analysis on Diurnal Variation of Wind Velocity in Hebei Province

作　　者：陈鹤[1] 周顺武[1] 熊安元[2] 卢怡[1] 刘炜[1] 

机构地区：[1]南京信息工程大学大气科学学院,江苏南京210044 [2]国家气象信息中心,北京100081

出　　处：《干旱气象》2011年第3期343-349,共7页Journal of Arid Meteorology

基　　金："近百年来我国极端天气气候事件变化特征及其影响"(2007BAC29B02);"中国气候系统的协同观测与预测研究"项目(GY-HY200706005)共同资助

摘　　要：根据我国风能资源详查测风塔资料,对2009年6月至2010年5月期间河北省境内22座测风塔上70 m高度的风速资料进行整理后,分析了内陆和沿海地区四季风速的日变化特征。结果表明:该风能详查区冬(夏)季平均风速最大(小);内陆(沿海)地区四季日平均风速呈现出白天大(小)、夜间小(大)的特点;在风速的日变化幅度上,春、秋季变化幅度明显大于夏、冬季,其中西北部山区(东南部平原)是风速变化幅度最大(小)的区域。另外,内陆地区各季节风速与温度梯度的日变化之间普遍存在着显著的负相关。Based on the detailed anemometer tower data of 22 stations from June 2009 to May 2010 in Hebei province,the characteristics of diurnal variation of wind velocity in four seasons at the height of 70 m were analyzed.The statistic results indicated that the mean wind velocity in winter was maximum but minimum in summer in a year.The diurnal mean wind speed in inland（coastal） areas was big（small） during day（at night）.The diurnal mean wind speed in spring and autumn changed more than that in summer and winter,and also changed more in northwest mountainous area than that in southeastern plain area.In addition,it was found that there was a significantly negative correlation between the diurnal wind speed variation and diurnal temperature gradient variation in each season in inland areas.

关 键 词：河北省 测风塔 风速 日变化 

分 类 号：P425.4[天文地球—大气科学及气象学]