哈密地区最大风速变化及特征分析

Analysis of Maximum Wind Speed Variation and Characteristics in Hami Area

根据哈密、淖毛湖气象站1961-2015年历年最大风速资料,分别使用Mann-Kendall检验方法和Morlet小波变换对最大风速突变和周期性进行分析。结果表明:哈密站和淖毛湖站的最大风速都呈下降趋势,变化率分别为2.1(m/s)/10年和1.31(m/s)/10年;两座气象站的最大风速都存在突变性,分别发生在1984年和1996年;哈密气象站最大风速存在31年、22年、10年和5年左右的周期震荡,淖毛湖站最大风速存在24年、15年和8年左右的周期震荡。

Based on maximum wind speed data by Hami weather station and Naomaohu weather station from 1961 to 2015, the trend of maximum wind speed was analyzed by Mann-Kendall nonparametric test method, and the periodic characteristic analysis of maximum wind speed series was analyzed using Morlet wavelet transform. The results show that: the maximum wind speed in Hami and Naomaohu weather station both showed a downward trend with the rate of 2.1(m/s)/ 10 year and 1.31(m/s)/10 year;the mutation appeared in 1984 for Hami weather station and 1996 for Naomaohu weather station;There are periodic oscillations around 31 year, 22 year, 10 year and 5 year in Hami weather station, with 24 year, 15 year, and 8 year in Naomaohu weather station.