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Modelling isolated wave-turbulence interactions in the stable atmospheric boundary layer

Edwards, N. R.; Mobbs, S. D.. 1997 Modelling isolated wave-turbulence interactions in the stable atmospheric boundary layer. Quarterly Journal of the Royal Meteorological Society, 123 (539). 585-604. 10.1002/qj.49712353904

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Abstract/Summary

The interaction between a large-scale isolated wave and turbulence is considered in the context of the stable atmospheric boundary layer. A two-dimensional model with a second-moment turbulence closure is used to simulate the interaction numerically. Results obtained using other closures are discussed. the initial form of the wave-like disturbance is suggested by observations, which are described in a companion paper. the turbulence is shown to exert only a small influence on the wave, while the turbulence itself remains close to production-dissipation equilibrium. Wave-like components of the turbulence fluxes vary roughly linearly with wave amplitude, but overall the wave is strongly nonlinear and depends heavily on the background flow. Only one term in the equations for the quadratic turbulence quantities varies in a simple way with wave amplitude; this term represents a net transfer of energy from the wave to the turbulence.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/qj.49712353904
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 00359009
Date made live: 13 Sep 2016 10:22 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/514465

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