Large-Eddy Simulation of an Idealized Tropical Cyclone

被引：156

作者：

Rotunno, R. ^{[1
]}

Chen, Y. ^{[1
]}

Wang, W. ^{[1
]}

Davis, C. ^{[1
]}

Dudhia, J. ^{[1
]}

Holland, G. J. ^{[1
]}

机构：

[1] Natl Ctr Atmospher Res, Boulder, CO 80307 USA

来源：

BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY | 2009年 / 90卷 / 12期

关键词：

SEA INTERACTION THEORY; HURRICANES; EYEWALL; MOIST;

D O I：

10.1175/2009BAMS2884.1

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Large-eddy simulation (LES) of a tropical cyclone (TC) was carried out with with the Advanced Research Weather research and forecasting (ARW) model. It was demonstrated the use of a horizontal grid size < 100 m in a TC simulation produced three-dimensional turbulent eddies. These three-dimensional turbulent eddies had the effect of decreasing the maximum sustained wind and the maximum predicted azimuthally averaged wind. The investigations retained the same subgrid-scale parameterization near the sea surface. The model version of the tropical atmosphere was in an equilibrium state in which the thermodynamic field was moist-neutral according to the ARW-model thermodynamic and saturation-vapor-pressure equations. The model thermodynamic state was maintained by inclusion of a relaxation term in the thermodynamic equation with a time constant of 36 h.

引用

页码：1783 / 1788

页数：6

共 29 条

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