Abstract: The feedback between large-scale stationary Rossby waves and small-scale high-frequency eddies is computed analytically in the framework of a barotropic and frictionless model atmosphere. The Rossby wave is meant to model ...

Abstract: The problem of resonance and meridional confinement of planetary-scale waves is investigated in the framework of a quasigeostrophic, two-layer, ?-plane model with lateral sponge layers. It is shown that the model resonant ...

Abstract: Idealized numerical experiments, supported by analytic considerations, are performed to determine the preferred direction of symmetric instability when water loading is considered. It is concluded that the most unstable ...

Abstract: AbstractThe monthly forecasting system of the Institute of Atmospheric Sciences and Climate of the National Research Council (CNR-ISAC) of Italy is operationally run on a weekly basis in the framework of the Subseasonal- ...

Abstract: In this paper we exploit a nonlinear baroclinic theory of atmospheric Rossby waves superimposed on westerly winds with meridional and vertical shear which was proposed in two earlier studies, Parts I and II. In Part I, ...

Abstract: Many recent theoretical and observational studies have been devoted to the understanding of atmospheric patterns that persist beyond the synoptic time scale. These patterns are known as blocking events. Properties of ...

Abstract: Many recent studies have been devoted to atmospheric Patterns that persist beyond the synoptic time scale, such as those known as blocking events. In the present paper we explore the possibility that blocking patterns can ...

Abstract: Lorenz's hypothesis of a quadratic law governing the growth of errors provides an estimate of small error growth in the atmosphere based on the knowledge of large error behavior. An atmospheric model whose simplicity allows ...

Abstract: The intense precipitation event that occurred between 3 and 6 November 1994 and caused extensive flooding over Piedmont in northwestern Italy is simulated and tested with respect to various physical aspects, using a ...

Abstract: ince August 2009, the GLOBO atmospheric general circulation model has been running experimentally at the Institute of Atmospheric Sciences and Climate (ISAC) of the National Council of Research of Italy. GLOBO is derived ...