Numerical simulations of the saturated gravity wave spectra in the atmosphere

Details Numerical simulations of the saturated gravity wave spectra in the atmosphere Numerical simulations of the saturated gravity wave spectra in the atmosphere

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..129h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 54, Feb. 1992, p. 129-142. Research supported by NSCRC.

Physics

12

Atmospheric Models, Atmospheric Physics, Digital Simulation, Gravity Waves, Two Dimensional Models, Diffusion Coefficient, Parameterization, Turbulent Diffusion, Wave Interaction

Scientific paper

The saturation of small scale gravity waves in the region near the critical level is computed using a 2D numerical model. It is found that due to wave-shear interaction the variance of vertical velocity fluctuations is significantly lower than predicted by the linear gravity wave theory. The vertical wavenumber spectrum of horizontal velocity fluctuations in the unstable region with shear instability is governed by wave-shear interaction and follows the theoretical saturation spectrum.

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