利用2010~2018年10月武汉探空站秒级风资料，分析距地面高度3 km以下每间隔200 m及特殊层300 m共17层各高度的风向风速变化特征。结果表明：各规定层高度平均风向风速随高度变化基本一致，平均风向由低层偏东东南逐步转为高层偏南西南风，1000 m以下低空域变化幅度相对较小。08时与20时平均风速曲线几乎重合，400 m层跃升至4.7 m/s附近后，风速呈现缓慢上升。各规定层平均风速特征08时、20时基本一致，近地层变化较小，200~2000 m各层次年际变化比较平稳，2000 m以上层次振荡上升。1400 m以上层次上旬振荡减小，中旬到下旬初相对平稳，下旬中后期风速加大，极大值主要出现在27~29日之间。近地层风向逐日变化差异相对较大，从偏北风到偏南风之间来回摆动。200 m以上各层基本较为一致，变化幅度相对较小。08时、20时各规定层最多、次多风向表现有差异，08时多以东北风为最多风向，次多风向多以东东北、东风为主，而20时2400 m以下各层最多风向均为一致的东北风，次多风向以北东北和东东北为主，2600 m以上才逐渐转为偏西风。
This paper used the sounding data of the L band radar in Wuhan sounding station from 2010 to October 2018, to analyze the characteristics of the wind direction and speed of each height of 17th floors at intervals of 200 and 300 meters below 3 kilometers above the ground. The results showed that the average wind direction and speed change with height of each specified layer is basically the same, the average wind direction changes from east-south of the lower layer to south-southwest of higher layer gradually, and the variation range of the lower airspace below 1000 m is relatively small. The average wind speed curve at 08:00 almost coincides with that at 20:00. After the 400 m layer jumped to around 4.7 m/s, the wind speed showed a slow rise. The average wind speed char-acteristics of each specified layer are basically the same at 08:00 and 20:00, the change of ground layer is small. Annual change of each layer is relatively stable, and the oscillation of the layer above 2000 meters rises. The initial oscillation at the level above 1400 m decreased, and the wind speed was relatively stable from this mid to the beginning of Late. The wind speed increased in this mid and later period of Late, and the maximum value mainly appeared between 27th to 29th. The diur-nal variation of ground layer wind direction is relatively large, swinging from northerly wind to southerly wind. The layers above 200 m are basically consistent with a relatively small range of change. At 08:00 and 20:00, the most frequent wind directions of each specified layer were different. At 08:00, most of the multiple wind directions were from northeast to northeast and east, while at 20:00, the most frequent wind directions of each layer below 2400 meters were the same northeast, and the multiple wind directions were mainly from north to northeast, and the multiple wind directions were from above 2600 meters to west gradually.
