Abstract: Resonant interactions between a finite-amplitude marginally unstable and two neutral baroclinic waves are investigated in a quasi-geostrophic two-layer model on the beta plane. The three wave-amplitudes are taken of ...

Abstract: Spacial and temporal changes in the mean field, due to the presence of finite-amplitude marginally un-stable and two neutral baroclinic waves, which form a resonant triad, are investigated in a quasi-geostrophic, inviscid, ...

Abstract: Finite-amplitude stability characteristics of Rossby wave flow are investigated in the context of the inviscid barotropic model on a beta plane. It is shown that a superimposed disturbance, unstable in the linear sense, ...

Abstract: Dynamics of N ≥ 5 resonantly interacting baroclinic waves, one of which is marginally unstable and the remaining N ? 1 are neutral, are investigated in a quasi-geostrophic inviscid two-layer model. Numerical solutions of ...

Abstract: Spectral energetics associated with an N-wave system composed of a marginally unstable and N/1 neutral waves, interacting resonantly in triad configurations, are examined in the context of the two-layer baroclinic model. ...

Abstract: Nonlinear evolution of baroclinic waves in the presence of surface topography is investigated in an Eady model modified to include Ekman dissipation and sloping horizontal boundaries. The topographic form drag competes ...

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Abstract: Nonlinear dynamics of unstable baroclinic disturbances are examined in the context of the Eady model modified by Ekman dissipation at the lower boundary while the upper boundary remains stress-free. Three approaches are ...

Abstract: Finite-amplitude dynamics of baroclinic waves are examined in the presence of asymmetric Ekman pumping at the lower and upper boundaries. Both asymptotic and spectral numerical methods are employed. The resulting amplitude ...

Abstract: The structure and evolution of planetary-scale waves in the 500 mb geopotential height field over the Northern Hemisphere during December 1976 and January 1977 are studied with the techniques of one- and two-dimensional ...