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中文摘要：
利用黑河流域上游阿柔观测站2008年6月10日至7月13日的近地层湍流观测资料,分析了该地区近地层方差和湍流谱的统计特征以及近地层能量交换特征.结果表明：黑河流域无量纲化三维风速、温度和湿度方差与稳定度的关系满足Monin-Obukov相似理论;湍流能谱基本符合Monin-Obukov相似理论,但个别能谱在某些频段存在谱隙,近地层湍流输送由于局地山谷地形影响出现大气湍流的非均匀和各向异性.夏季潜热通量大于感热通量,感热通量在夜间有明显向下输送的特点.
英文摘要：
In this paper,the variations of turbulent statistics parameters and the energy exchange near surface are investigated by using turbulent data observed at 3 m above ground in the upper reaches of Heihe River. The standard deviations of 3D speed,temperature and humidity fluctuation satisfy Monin-Obukov similarity theory. In the neutral stratification,both spectrum and co-spectrum appear to follow Monin-Obukov similarity and Kolmogorov＇s prediction for the inertial subrange,but there are spectral gap in these spectra owing to valley topography. It is obvious that the sensible heat flux transfers downwards at night.
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