1990~2020年民和地区平均风速和大风日数变化特征

The Variation Characteristics of the Average Wind Speed and the Number of Windy Days in Minhe Area from 1990 to 2020

摘要: 利用一元线性回归分析方法模拟气象要素的变化趋势，对民和地区1990~2020年风向、风速记录资料进行分析。结果表明民和地区年平均风速呈缓慢递增趋势，近30a民和地区年平均风速为1.5 m/s，每10a增大0.27 m/s。民和地区平均风速春季最大，秋季最小。近30a民和地区平均大风日数为2.5 d，每10a增大0.3 d。民和地区大风日数最多的是夏季，其次是春季，再次是秋季，最少的是冬季。春、夏、秋、冬四季大风日数变化趋势不太一致，春、夏两季呈现增加趋势，秋冬两季呈现减小趋势。民和地区全年以东东南风和西北风为主，其次是东南风。

Abstract: By using the method of linear regression analysis to simulate the change trend of meteorological elements, the wind direction and wind speed recorded data of people and regions from 1990 to 2020 were analyzed. The results show that the average annual wind speed in the area is increasing slowly, and the average annual wind speed in the area is 1.5 m/s in the past 30 years, increasing by 0.27 m/s every 10 years. The average wind speed is the highest in spring and the lowest in autumn. The average number of strong wind days in the past 30 years is 2.5 days, increasing by 0.3 days every 10 years. The number of strong wind days is the highest in summer, followed by spring, autumn, and the least in winter. The variation trend of gale days in spring, summer, autumn and winter is not consistent. The trend of gale days in spring and summer is increasing, while the trend of gale days in autumn and winter is decreasing. In Minhe area, the wind is mainly east southeast wind, northwest wind, followed by southeast wind.