Sensible Heat Transfer Parameterization for Surfaces with Anisothermal Dense Vegetation
Sensible Heat Transfer Parameterization for Surfaces with Anisothermal Dense Vegetation
复制标题
非等温茂密植被表面的显热传递参数化
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
Michiaki Sugita
中科院分区：
文献类型：
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作者：
W. Brutsaert;Michiaki Sugita
可感拍的标量粗糙度可直接用表面温度表示。因此，在非等温植被冠层的情况下，标量粗糙度的概念是不好定义的，它可能会有很大的变化取决于表面温度的测量方法和尺度。通过对植被冠层内湍流传输现象的分析，可以看出如何通过定义适当加权的平均表面温度来减少垂直非等温表面的标量粗糙度的不确定性和可变性。讨论了辐射温度计遥感地表温度的最佳测量的影响。
Abstract The scalar roughness for sensible beat can be directly formulated in terms of the surface temperature. Therefore, in the case of an anisothermal vegetation canopy, the concept of a scalar roughness is ill defined and it may vary greatly depending on the method and scale of measurement of the surface temperature. Through an analysis of the turbulent transport phenomena inside the vegetation canopy, it is shown how this uncertainty and variability of the scalar roughness of a vertically anisothermal surface can be reduced by defining a properly weighted average surface temperature. Implications are discussed for the optimal measurement of surface temperature by remote sensing with radiation thermometers.