Atmospheric Turbulence Features in the Surface-layer over Valley City with Light Wind Speed
河谷城市小风条件下的近地层湍流特征

The intensities, standard deviations and integration time scales of velocity components of turbulence in the surface-layer over Lanzhou and Gaolan are studied using the data from a UVW anemometer and a bivane anemometer. The results are also compared with the observations in other areas. The results show that turbulence intensities over Lanzhou are stronger than those in other areas and the integration time scale in vertical direction is smaller and those in horizontal direction are larger than in other areas.