Velocity fluctuations in the Lagrangian frame have been observed by using a double-theodolite system to track balanced balloons released at the height of 160m of the 325m tower which is located on the north suburb of Beijing.

• 在北京北郊气象铁塔(325m高)的160 m高度上释放平衡气球；用双经纬仪定位的方法得到拉格朗日表示法的风速脉动资料.