Abstract
We investigated the turbulent intensities and Reynolds shear stress at high Reynolds number \(({Re_\tau = 5 \times 10^{6}})\) in the atmosphere surface layer (ASL) through analyzing observations in near-neutral stratified conditions. The results show that with increasing Reynolds number the streamwise turbulent intensity increases linearly, and the peak of the Reynolds shear stress extends to a higher non-dimensional height, which means that the thickness of the logarithmic region increases. Furthermore, our results provide evidence for treating the ASL as a canonical turbulent boundary layer, the results of which can be extended and applied to higher Reynolds number wall turbulence in the ASL.
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Acknowledgments
This research was supported by a grant from the National Natural Science Foundation of China (Nos. 11072097, 11232006, 11202088, 10972164 and 11121202), the Science Foundation of Ministry of Education of China (No. 308022), Fundamental Research Funds for the Central Universities (lzujbky-2009-k01) and the Project of the Ministry of Science and Technology of China (No. 2009CB421304). The authors express their sincere appreciation to the support.
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Liu, HY., Bo, TL., Wang, GH. et al. The Analysis of Turbulence Intensity and Reynolds Shear Stress in Wall-Bounded Turbulent Flows at High Reynolds Numbers. Boundary-Layer Meteorol 150, 33–47 (2014). https://doi.org/10.1007/s10546-013-9859-1
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DOI: https://doi.org/10.1007/s10546-013-9859-1