近54年来新疆和田地区平均风速时空变化

On Spatial and Temporal Trends of Average Wind Speed in Hotan Region in Recent 54 Years

采用滑动趋势分析、突变分析等方法对新疆和田地区4个气象站1960-2013年的平均风速日值资料进行分析,以探讨该地区平均风速的变化趋势.研究表明:和田地区年平均风速以0.006(m·s)/a(p<0.01)的递减速率呈现明显的下降趋势;四季平均风速也呈现明显的下降趋势,秋季递减趋势最大,春季次之,冬季最小;平均风速以5月最大,4月次之,12月最小;在空间分布上,平均风速也存在较大的差异.和田地区平均风速在1977年发生突变,春季突变发生在1977年、1978年,夏季略早(1975年、1976年),秋、冬季略晚,分别为1979年和1980年.

With the log date of 1960-2013 monthly average wind speed and maximum wind speed of four weather stations in Xinjiang Hotan region,M-K mutation test has been chosen,sliding trend analysis methods to analysis the average wind speed change trend of space and time in hotan region.The results show that the annual average wind speed in this region presents an obvious downward trend,the decline rate is 0.006m/s/a（p0.01）,and the average wind speed of four seasons also shows a trend of decrease,autumn is the largest,next is spring,winter is the minimal,The average wind speed in May is the heaviest,the second is April,December is the minimum.There is a big regional differences at the average wind speed.In scale,Hotan is the highest,Mingfeng is at the second degree,and the lowest is Yutian.The average wind speed in Hotan area mutations in 1977,the mutation years in spring is 1977/1978,summer is a little early（1975/1976）,Autumn and winter are a little late,respectively in 1979 and 1980.