Abstract: A novel technique is used to test theories of Alpine lee cyclogenesis. An ?idealized? reference simulation of a cyclogenetic event is performed with a channel flow model. Recent theories of Speranza et al., Pierrehumbert, ...

Abstract: We consider forced quasi-stationary Rossby waves in background flows with realistic variability in time and space. Long-term integrations of the nonlinear barotropic vorticity equation for deviations from background flow ...

Abstract: A wave?mean flow model of dry channel flow is used to investigate the processes that determine the height HT and the slope of the extratropical tropopause. Without baroclinic waves, differential radiative heating and a ...

Abstract: A hemispheric solution is obtained for the topographically forced stationary linear perturbations in a two-layer primitive equation model of the atmosphere. Results are discussed for January conditions. Additionally, the ...

Abstract: The dynamic climatology of a simple model of barotropic stochastically forced ?-plane flow over topography is studied. Except for the forcing, the model is similar to the three-component systems studied by Charney and ...

Abstract: An axisymmetric model of the flow over Antarctica is used to study the circulation induced by cooling of the air at the slopes of the continent. It is found that the resulting circulation with southeasterly surface winds ...

Abstract: The role of valley winds in the diurnal circulation of large-scale mountain massifs like the Tibetan Plateau is investigated. We consider a circular plateau with radial valleys leading to the surrounding lowlands. A ...

Abstract: A linear, hemispheric, two-level model which is based on the primitive equations is used to study the steady-state response of the atmosphere to sea surface temperature anomalies (SSTA's). First it is shown by comparison ...

Abstract: No abstract available.

Abstract: It is proposed that the nonlinear interaction of forced waves and slowly moving free waves May lead to the development of blocking highs under favorable conditions. This idea is tested numerically for three types of ...