PARAMETRIZATION OF MOMENTUM TRANSPORT BY CONVECTIVELY GENERATED GRAVITY-WAVES

被引：37
|
作者：
KERSHAW, R [1 ]
机构：
[1] METEOROL OFF,BRACKNELL RB12 2SZ,BERKS,ENGLAND
来源：
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 1995年 / 121卷 / 525期
关键词：
CONVECTION; GRAVITY WAVES; MOMENTUM FLUX; PARAMETRIZATION;
D O I：
10.1002/qj.49712152505
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
A parametrization equation for momentum flux due to convectively generated gravity waves is derived and tested numerically. The wave momentum flux just above the convective layer is shown to depend directly on the shear and the intensity of convection, and inversely on the stability of the air above the convection. Simulations of ensembles of precipitating convective clouds are used to validate the parametrization and to estimate the efficiency of wave generation by convection in one particular convective regime: an idealized cold-air outbreak with unidirectional shear.
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页码：1023 / 1040
页数：18
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