Abstract
A means of representing the effect of viscous diffusion comprehensively for both horizontally and vertically propagating atmospheric waves is developed. This is accomplished by replacing the viscous diffusion terms in the momentum equations by a different damping mechanism, here, heat loss in the thermodynamic equation. The particular form of the artificial damping is chosen so that it reproduces the dissipation due to the original damping. Results obtained here are directly applicable to inhomogeneous basic states and evanescent waves. Solutions for the isothermal case display the same character as those for the idealized fully viscous problem examined by Yanowitch.
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