Abstract: This paper reports on a study of quasi-linear baroclinic adjustment in a quasigeostrophic two-layer model with a constant baroclinic shear and an Ekman damping that is equal at the upper and lower boundaries. An analytic ...

Abstract: The relationship between the local shape of an unstable disturbance and the basic deformation field has been put forward by Mak and Cai as a general condition for barotropic instability of a zonally varying nondivergent ...

Abstract: It is shown that when the basic state has zonal variation, the linearized operator of an atmospheric spectral model acts on the perturbation spectral coefficients of both the nonnegative zonal indexes and their conjugates. ...

Abstract: This paper proposes a mechanism that explains how coupled dynamics alone can spontaneously give rise to a realistic west?east asymmetric mean state and an ENSO-like interannual variability without requiring the existence ...

Abstract: This paper investigates the dynamics of regional cyclogenesis from the perspective of local instability of a zonally inhomogeneous baroclinic jet streak in a two-layer quasi-geostrophic beta-plane channel model. When such ...

Abstract: It is hypothesized that the low-frequency planetary scale waves and the high-frequency cyclone-scale waves in an equilibrated state of the atmosphere are symbiotically dependent upon one another. This is demonstrated with ...

Abstract: This paper investigates the modal and nonmodal instability of a barotropic jet streak. The normal mode analysis reveals that all the unstable modes are either stationary or propagating local modes. The more localized the ...

Abstract: he presence of the latitudinal variation of the Coriolis parameter serves as a mechanical barrier that causes a mass convergence for the poleward geostrophic flow and divergence for the equatorward flow, just as a sloped ...

Abstract: t is shown in this paper that there is no ambiguity in the final form of the governing equations of a quasigeostrophic (QG) model after partitioning the total flow into the geostrophic, balanced ageostrophic, and unbalanced ...

Abstract: Both the global precipitation and evaporation in global warming simulations increase at 1%?3% K?1, much smaller than the rate suggested from the Clausius?Clapeyron (C?C) relation (6%?6.5% K?1). However, the reduction of ...