摘要
文章利用密云站、上甸子站1994-2013年的地面风观测资料,以上甸子站作为参考站,对比分析了密云站第二阶段与第一阶段风观测值的差异。结果表明:第二阶段风速平均值较第一阶段减小了0.5 m·s^(-1);2013年年平均风速受台站周围环境影响最大;观测场周围障碍物对不同季节、月平均风速影响程度为:春季最大,夏季最小;3月最大,8月最小;观测场周围环境对西南偏西风风速影响最大,对1~2 m·s^(-1)风速频率影响最大。第二阶段静风频率增加了5.5%;各季静风频率均有增加,冬季最大,春季最小,秋季大于夏季。
Employing the observation surface wind data from Miyun Station and Shangdianzi Station from 1994 to 2013, the wind observation difference between the first stage and the second stage at Miyun Station is analyzed. The results indicate that the average wind speed of the second stage is reduced by 0.5 m · s-1 compared to the winds in the first stage. The environment around the station affected the annual average wind speed significantly in 2013. The seasonal and monthly wind speeds are affected by the obstacles around the station at different degrees. The maximum attenuation is in spring and March, while the minimum attenuation is in summer and August. The surrounding environment has the greatest impact on the WSW wind velocity and also on the wind speed frequency between 1 m · s-1 and 2 m · s-1. Comparing the first stage, the static wind frequency in the second stage increases by 5.5 ~, and the frequency of static wind has increased at each season. The most obvious increase is in winter and minimum increase is in spring. The increase in fall is greater than in summer.
出处
《气象》
CSCD
北大核心
2017年第1期84-90,共7页
Meteorological Monthly
基金
公益性行业(气象)科研专项(GYHY201106049)资助
关键词
探测环境
地面风
衰减
observation environment, surface wind, attenuation
