Abstract: The Ertel potential vorticity theorem for stratified viscous fluids in a rotating system is analyzed herein. A set of ?tracers,? that is, materially conserved scalar quantities, and the corresponding Ertel potential ...

Abstract: Dynamical mechanisms of atmospheric regime behavior are investigated in the context of a quasigeostrophic three-level T21 model of the wintertime atmospheric circulation over the Northern Hemisphere. The model, driven by ...

Abstract: From a dynamical systems theory perspective, the mechanisms of atmospheric regime behavior in a barotropic model, a pseudobarotropic model, and a baroclinic three-level model, where all of them show quite realistic regimes, ...