Effects of shear in the convective boundary layer: analysis of the turbulent kinetic energy budget

被引：0
|
作者：
David Pino
Jordi Vilà-Guerau De Arellano
机构：
[1] Technical University of Catalonia,Applied Physics Department
[2] Institute for Space Studies of Catalonia (IEEC/CSIC),Meteorology and Air Quality Group
[3] Wageningen University,undefined
来源：
Acta Geophysica | 2008年 / 56卷
关键词：
sheared convective boundary layer; turbulence kinetic energy; scaling analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Effects of convective and mechanical turbulence at the entrainment zone are studied through the use of systematic Large-Eddy Simulation (LES) experiments. Five LES experiments with different shear characteristics in the quasi-steady barotropic boundary layer were conducted by increasing the value of the constant geostrophic wind by 5 m s-1 until the geostrophic wind was equal to 20 m s-1. The main result of this sensitivity analysis is that the convective boundary layer deepens with increasing wind speed due to the enhancement of the entrainment heat flux by the presence of shear.
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页码：167 / 193
页数：26
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