摘要
利用包头市达茂旗气象站1971—2009年38a的日逐小时风向、风速的地面观测资料,对达茂旗风区地面风的平均日变化、月变化、季变化、年变化等进行分析,结果表明:从1971—2009年的年平均风速总体呈现减小的趋势;全年较大风主要出现在春季,4月份平均风速最大;从小时平均值变化曲线看出,00—13时风速逐渐增大,到13时风速达到最大后逐步减小;此外,利用位于该风区内70m测风塔小时数据分析了风速垂直变化曲线,并根据风机发电对风速的要求,分析了有效风速百分比的日变化曲线。
Using the ground observation data of hourly wind director and wind speed of 38 years from 1971 to 2009 years in Damao banner of Baotou, the Average daily change, monthly change, season change and annual change of surface wind were analyzed in Damao banner of Baotou. The results showed that the annual average wind speed appeared decreasing trend from 1971 to 2009 years, larger wind was main in the spring, maximum month of average wind speed was April. According to Average change curve of hour, wind speed increases gradu- ally from 0：00 to 13：00, and decreases gradually after 13：00. In addition, using wind speed data of 70m wind measurement tower, the vertical wind speed changing curve was analyzed, and according to the requirements of the wind power to wind speed, daily changes curve of percentage of effective wind speed was analyzed.
出处
《内蒙古气象》
2011年第6期22-24,共3页
Meteorology Journal of Inner Mongolia
基金
公益性行业科研专项项目(GYHY201006035)资助
关键词
地面风场
垂直变化
有效风速
surface wind field
vertical changes
effective wind speed
