Abstract: The two major approaches to understanding plane parallel shear instability?the counterpropagating Rossby wave (CRW) and overreflection (OR) approaches?illuminate very different fundamental aspects. This work examines how ...

Abstract: The role of the continuous spectrum and its associated potential vorticity (PV) in absolute instability are investigated in the context of a semi-infinite version of Eady?s basic state. This flow crudely resembles the ...

Abstract: ne mechanism for the growth of ocean surface waves by wind is through a shear instability that was first described by Miles (1957). We provide a physical interpretation of this wind-wave instability in terms of the interaction ...

Abstract: The heuristic explanation, suggested by the parcel method, for the baroclinic instability mechanism is reexamined. The parcel method argues that an air parcel displaced within the wedge of instability, that is, between the ...

Abstract: Motivated by the success of potential vorticity (PV) thinking for Rossby waves and related shear flow phenomena, this work develops a buoyancy?vorticity formulation of gravity waves in stratified shear flow, for which the ...