Heat Transport in the Atmospheric Boundary Layer.
Heat Transport in the Atmospheric Boundary Layer.
复制标题
大气边界层中的热传输。
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
J. Paumier
中科院分区：
文献类型：
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作者：
L. Mahrt;J. Paumier
本文根据11架飞机在大气质量转化实验中进行的加热边界层探测资料，研究了湍流结构和热输运。通过对极坐标系下联合频率分布特性的分析，揭示了各种因素对湍流输运的影响。这样的分析允许根据包括总流量的不同类型的运动的特性来确定相关系数和波动幅度。特别是，各种事件的总流量的贡献，揭示没有先验的采样标准的规格。在目前的情况下，剪切产生的湍流和破碎的层积云在边界层顶部修改的轮廓的虚拟和感热通量。向上的虚拟热通量随高度呈线性下降，但在边界层顶60%的较低高度处消失并向下。热通量的垂直结构是合理的。
Abstract The structure of turbulence and transport of heat is examined from data obtained from 11 aircraft soundings executed in heated boundary layers during the Air Mass Transformation Experiment. Various influences on the turbulent transport are revealed by analyzing properties of the joint frequency distribution in polar coordinate. Such an analysis allows determination of a correlation coefficient and fluctuation amplitude as a function of properties of different types of motion comprising the total flow. In particular, the contribution of various events to the total flux is revealed without a priori specification of sampling criteria. In the present case, shear generation of turbulence and broken stratocumulus at the boundary layer top modify the profiles of virtual and sensible heat flux. The upward virtual heat flux shows the usual linear decrease with height but vanishes and becomes downward at the relatively low level of 60% of the boundary layer top. The vertical structure of the heat flux is e...