摘要
利用兰州城市和郊区皋兰县冬季同期的湍流观测资料，分析了城市和郊区的湍流强度、脉动速度标准差和湍流的欧拉时间积分尺度等湍流特征量，并与其他地区的湍流观测量进行了对比，从而揭示了兰州河谷城市小风条件下的大气湍流特征。
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.
出处
《大气科学》
CSCD
北大核心
1998年第6期896-904,共9页
Chinese Journal of Atmospheric Sciences
关键词
湍流强度
时间尺度
湍流特征
河谷
风
近地层
turbulence intensities standard deviation time scale features of turbulence
