Statistics of Scalar Fields in the Atmospheric Boundary Layer Based on Large-eddy Simulations. Part 1: Free Convection

被引：0
作者：
Zbigniew Sorbjan
机构：
[1] Marquette University,Department of Physics
来源：
Boundary-Layer Meteorology | 2005年 / 116卷
关键词：
Atmospheric boundary layer; Free-convection; Entrainment; Large-eddy simulations;
D O I：
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摘要：
Convection in a quasi-steady, cloud-free, shear-free atmospheric boundary layer is investigated based on a large-eddy simulation model. The performed tests indicate that the characteristic (peak) values of statistical moments at the top of the mixed layer are proportional to the interfacial scales (from gradients of scalars in the interfacial layer). Based on this finding a parameterization is proposed for profiles of scalar variances. The parameterization employs two, semi-empirical similarity functions Fm(z/zi) andFi(z/zi), multiplied by a combination of the mixed-layer scales and the interfacial scales.
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页码：467 / 486
页数：19
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