Abstract: Exact, finite-amplitude, local wave-activity conservation laws are derived for disturbances to steady flows in the context of the two-dimensional anelastic equations. The conservation laws are expressed entirely in terms ...

Abstract: Global FGGE data are used to investigate several aspects of large-scale turbulence in the atmosphere. The approach follows that for two-dimensional, nondivergent turbulent flows which are homogeneous and isotropic on the ...

Abstract: The problem of symmetric stability is examined within the context of the direct Liapunov method. The sufficient conditions for stability derived by Fj?rtoft are shown to imply finite-amplitude, normed stability. This ...

Abstract: No abstract available

Abstract: It is shown how a renormalization technique, which is a variant of classical Krylov?Bogolyubov?Mitropol'skii averaging, can be used to obtain slow evolution equations for the vortical and inertia?gravity wave components ...

Abstract: AbstractThe role of parameterized nonorographic gravity wave drag (NOGWD) and its seasonal interaction with the resolved wave drag in the stratosphere has been extensively studied in low-resolution (coarser than 1.9° ? ...

Abstract: The situation considered is that of a zonally symmetric model of the middle atmosphere subject to a given quasi-steady zonal force F?, conceived to be the result of irreversible angular momentum transfer due to the upward ...