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.

引用

页码：1023 / 1040

页数：18

共 20 条

[1]

BRADBURY TAM, 1990, METEOROL MAG, V119, P112

[2] CONVECTIVELY FORCED INTERNAL GRAVITY-WAVES - RESULTS FROM TWO-DIMENSIONAL NUMERICAL EXPERIMENTS [J].

CLARK, TL ;

HAUF, T ;

KUETTNER, JP .

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1986, 112 (474) :899-925

[3]

FOVELL R, 1992, J ATMOS SCI, V49, P1427, DOI 10.1175/1520-0469(1992)049<1427:NSOCGS>2.0.CO

[4]

[5]

GILL AE, 1982, INT GEOPHYSICS SERIE, V30

[6]

HAUF T, 1989, Q J ROY METEOR SOC, V115, P309, DOI 10.1002/qj.49711548606

[7]

HAUF T, 1993, MON WEATHER REV, V121, P3282, DOI 10.1175/1520-0493(1993)121<3282:AOOCWO>2.0.CO

[8]

[9]

HOLTON JR, 1992, INT GEOPHYSICS SERIE, V48

[10] CONVECTION WAVES - OBSERVATIONS OF GRAVITY-WAVE SYSTEMS OVER CONVECTIVELY ACTIVE BOUNDARY-LAYERS [J].

KUETTNER, JP ;

HILDEBRAND, PA ;

CLARK, TL .

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1987, 113 (476) :445-467

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