摘要
本文通过对1986年初冬兰州大气边界层观测试验得到的风、温梯度资料及其脉动资料的计算分析,研究了复杂地形条件下近地面层大气湍流输送和湍流强度的特征。研究发现山顶大气湍流输送要比山腰和山谷大得多;山腰的垂直速度、湍流强度和温度湍流强度在不稳定条件下基本上遵从Monin-Obukhov相似性预测规律。
In the paper, we calculated and analysed gradient and fluctuation data of wind and temperature measured in the observation experiment of the surface layer in early winter, 1986 in Lanzhou. Characteristics of turbulent transport and intensity in the surface larger over complex terrain are studied. It is found that turbulent transport is far larger over the hilltop than the half way up the mountain and mountain valley in Lanzhou, beside, in unstable air, turbulent intensities of vertical velocity and temperature over half way up the mountain obey Monin-Obukhov similarity theory.
出处
《高原气象》
CSCD
北大核心
1992年第2期126-132,共7页
Plateau Meteorology
基金
国家自然科学基金资助项目
关键词
湍流
输送
强度
近地面层
兰州市
Complex terrain
Surface layer
Turbulent transport
Turbulent intensity
Superadiabatic unstability.
