十三间房站迁站前后大风资料对比分析

A comparative analysis of wind data before and after relocation of 13 rooms

摘要:

选取新疆百里风区51495旧站址（七角井国家基本气象站）1956—1998年和新站址（十三间房国家基本气象站）1999—2016年逐月大风日数、平均风速、最多风向等资料进行对比分析，采用线性回归、相关分析等方法分析大风的年、季、月变化特征及趋势。结果表明：51495在迁站前年大风日数呈显著的波动上升趋势，倾向率为6.74 d·(10a)-1，其中夏季增加最明显；年平均风速呈微弱的减小趋势，倾向率为-0.01 m·s-1·(10a)-1，秋季下降最显著；年主导风向以静风和北风（N）为主。迁站后年大风日数呈显著的波动下降趋势，递减率为-6.72 d·(10a)-1，其中春季减小最明显；年平均风速减小趋势较迁站前明显，倾向率为-0.31 m·s-1·(10a)-1，除了冬季其它三季下降趋势基本相似；年和各季主导风向发生频率基本一致，以偏北风（N、NNW、NNE）为主。

Abstract:

Selection of xinjiang in the wind area 51495 old site (QiJiaoJing national basic weather stations) in 1956-1998 and the new site (13 rooms national basic weather stations) in 1999-2016 monthly wind days, average wind speed and wind direction data, this paper compares and analyzes the methods of linear regression, correlation analysis in analysis of wind, season, month change characteristics and trends. The results showed that: 51495 had a significant fluctuation trend in the high wind days in the preceding years, with a tendency rate of 6.74 d·(10a) -1, with the most obvious summer increase. The annual mean wind speed decreased slightly, with the trend rate of -0.01 m·s-1·(10a) -1, the most significant decline in autumn; The dominant wind direction of the year is the calm wind and the north wind (N). In the following years, the number of wind days in the relocating station was significantly decreased, and the decline rate was -6.72 d·(10a) -1, which was the most obvious in spring. The annual average wind speed decreases the trend of the moving station, and the trend rate is -0.31 m·s-1·(10a) -1, except for the other three seasons in winter. The dominant wind direction of the seasons is basically the same with the north wind (N, NNW, NNE).