Abstract: A large class of wave structures in quasigeostrophic flow have instantaneous growth rates significantly larger than normal-mode growth rates. Since energy and potential enstrophy growth rates can be defined as functions ...

Abstract: The effects of topography are examined in a class of low-order quasi-geostrophic models on a midlatitude ?-plane. In the absence of topography the models are capable of producing qualitatively realistic zonal-mean circulations. ...

Abstract: The response of midlatitude temperature structure to changes in radiative forcing is examined in an analytical energy-balance model that includes parameterized eddy heat fluxes and linear radiative heating. The characteristics ...

Abstract: A three-layer, horizontally homogeneous, quasigeostrophic model is selected as one of the simplest environments in which to study the sensitivity of baroclinic eddy fluxes in the atmosphere to the vertical structure of the ...

Abstract: Two conceptual paradigms have been used in the past to interpret the observed strength and structure of eddy heat fluxes in the atmosphere. One is the idea of ?adjustment,? whereby the eddies respond efficiently to changes ...

Abstract: Observational studies have revealed some coherent extratropical patterns associated with the tropical Madden?Julian (MJ) wave. This study is an attempt to clarify and constrain the interpretation of these patterns by ...