Abstract: If the partial analogy between the behavior of Rossby-Ertel potential vorticity (PV) and the behavior of chemical tracers is to be correctly used in the general case of diabatic, frictional motion, then certain fundamental ...

Abstract: Some consequences of regarding potential vorticity as a tracer are considered. It is shown that neither diabatic heating, nor frictional forces, nor external forces such as might be used to model gravity-wave drag, can ...

Abstract: The one-dimensional propagation of a spectrum of gravity waves through a realistic middle atmosphere is investigated, separating as far as possible the propagation-invariant aspects from the more empirical wave-breaking ...

Abstract: This paper describes a new computationally efficient, ultrasimple nonorographic spectral gravity wave parameterization model. Its predictions compare favorably, though not perfectly, with a model of gravity wave propagation ...

Abstract: Using a new generalization of the Eliassen-Palm relations, we discuss the zonal-mean-flow tendency ??/?t due to waves in a stratified, rotating atmosphere, with particular attention to equatorially trapped modes. Wave ...

Abstract: Shear instabilities can result in waves being radiated far from the seat of instability. This phenomenon, and its opposite extreme, the trapping of instabilities, can be described and interdistinguished by linear theory ...

Abstract: The theorems, which exhibit the role of wave dissipation, excitation and transience in the forcing of mean flow changes of second order in wave amplitude by arbitrary, small-amplitude disturbances, are obtained 1) for the ...

Abstract: A review is given that focuses on why the sideways mixing of potential vorticity (PV) across its background gradient tends to be inhomogeneous, arguably a reason why persistent jets are commonplace in planetary atmospheres ...

Abstract: A detailed comparison is made between the Stewartson-Warn-Warn analytical solution for a fully nonlinear, nondiffusive Rossby-wave critical layer and a new analytical solution for the corresponding zonally truncated, ...

Abstract: No abstract available