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Parametrization of momentum transport by convectively generated gravity waves

✍ Scribed by R. Kershaw

Book ID
104576136
Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
885 KB
Volume
121
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

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.

πŸ“œ SIMILAR VOLUMES

The numerical stability of a parametriza
The numerical stability of a parametrization of convective momentum transport
✍ R. Kershaw; A. L. M. Grant; S. H. Derbyshire; S. Cusack πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 241 KB

## Abstract The Gregory __el at.__ parametrization of momentum transport by convection is shown to be more prone to numerical instability than other parts of the convection scheme, because of an additional element of numerical diffusion. The limiting Courant number for linear stability is (I + __c_