Abstract: Previous results claiming the existence of multiple equilibria based on simple barotropic or two-layer models of the atmosphere are reexamined. While not ruling out the existence of multiple equilibria we find that the ...

Abstract: We consider instabilities in a stratified Boussinesq fluid with basic velocity Uo(z). We initiate this study by considering the detailed stability properties of a profile where Uo(z) is constant in a top and bottom layer ...

Abstract: We show that there is a one-to-one correspondence between the values of the parameters Ri (Richardson number at the critical level, where mean flow equals phase speed), k (horizontal wavenumber) and cr (phase speed) for ...

Abstract: Using a nonlinear model of stationary long waves which incorporates wave-wave and wave-mean flow interactions, we assess the variability of the stationary long waves in the stratosphere and troposphere. This note supplements ...

Abstract: It is suggested that barotropically unstable easterly jets may be approximated by broken line profiles. It is then possible to use solutions to the Charney problem for baroclinic instability in order to solve the barotropic ...

Abstract: We have approached the barotropic instability of mean zonal flows over the Bay of Bengal for the months June, July and August from the perspective of pulse asymptotics rather than most rapidly growing normal modes. The ...