Abstract: The Charney problem for baroclinic instability involves the quasi-geostrophic instability of a zonal flow on a ? plane where the zonal flow is characterized by a constant vertical shear. The atmosphere is non-Boussinesq ...

Abstract: No abstract.

Abstract: We have made high resolution calculations of the wintertime stationary atmospheric response to planetary scale topographic and thermal forcings. A numerical model has been used that solves the spherical primitive equations ...

Abstract: African waves are believed to originate as shear instabilities, although in certain cases rainfall is organized so that latent heating contributes to wave growth. What determines whether the shear instability can organize ...

Abstract: Convective activity is frequently organized into band-like structures with space and time scales appropriate to internal gravity waves. When the convective activity involves cumulonimbus, then latent heat release can form ...

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: Stratospheric wind data for the Marshall Islands region during 1 April?1 July, 1958, are analyzed for contributions in the 4?6 day period range. It is shown that, excluding waves with vertical wavelengths <2 km from the ...

Abstract: No abstract is available.

Abstract: In Part I a simple theory of resonant Rossby waves in a uniform zonal flow was developed. The present paper extends the previous results to the case of an atmosphere with winds varying with height. The wave responses to a ...