盘州市气象站迁站前后风资料对比分析

Comparative Analysis on Wind Data of Transfer of Panzhou Meteorological

摘要: 利用盘州市气象站1987~2002 (旧站址)和2003~2018年(新站址)的逐日风速观测资料，分析盘州市新旧站址的大风日数变化、平均风速变化及年最大风速的风向频率等特征。结果表明：盘州市新旧站址大风日数均呈下降趋势，但迁站前16年的大风日数仅为200天，迁站后16年大风日数明显增加，大风日数达366天；新旧站址年、各季节平均风速也呈下降的趋势，其中春季的平均风速减少明显；旧站址最大风速主要为东北风(NE)、东北偏东风(ENE)、西南风(SW)；新站址最大风速主要为西南风(SW)、西南偏南风(SSW)、南风(S)、西南风(SW)；旧站址年平均风速在1992年和1998年发生了突变，新站址在2013年发生了一次突变。

Abstract: By using the daily wind speed observation data from 1987 to 2018 in the old and new Panzhou meteorological station, gale days, average wind speed and wind direction frequency of annual maximum wind speed in new and old Panzhou stations were analyzed. The results show that the number of gale days in the old and new Panzhou stations is decreasing, the number of gale days in the 16 years before relocation is only 200 days, the number of gale days in the 16 years after relocation is increasing obviously, and the number of gale days reaches 366 days; the average wind speed of the old and new Panzhou stations in every year and season is also decreasing, especially in spring. The main wind speed is NE, ENE and SW; the maximum wind speed is SW, SSW, S and SW. The annual average wind speed of the new station changed abruptly in 1992 and 1998, and a sudden break occurred in the old station in 2013.