Abstract: Second-order expansion of the aspect ratio gives rise to simple equations with a quasi-hydrostatic approximation that perform far better than the classical hydrostatic system in the simulation of moist convection in a ...

Abstract: The stability of a two-layer model is analyzed using a numerical method taking into account the effect of bottom topography. A jet in geostropic equilibrium exists in the upper layer and baroclinic instability may occur. ...

Abstract: There is a fairly well defined stationary wave and storm track response to El Niño SSTs over the Pacific. In this paper, the case is made that this response is a direct result of increased baroclinicity in the central ...

Abstract: The stability of the classical Norwegian polar front model is investigated, using a numerical technique to supplement the more precise conclusions which are possible in the limiting cases of zero density difference or zero ...

Abstract: We can identify the diurnal oscillation of the atmospheric boundary layer as an important source of mesoscale internal gravity waves in the lower atmosphere. The oscillation period of these waves is a function of latitude. ...

Abstract: From preliminary reports of the GATE experiment it was concluded that there is some strong evidence that mesoscale waves with a periodicity close to 2 days exist in the equatorial regions. The dynamics of unstable internal ...

Abstract: By analyzing a number of very high resolution, nonhydrostatic experiments of baroclinic lifecycles, it was concluded that the intensity of the near-surface baroclinic development influences the upper-level wave to such an ...

Abstract: The life cycle of baroclinic eddies in a controlled storm track environment has been examined by means of long model integrations on a hemisphere. A time-lagged regression that captures disturbances with large meridional ...

Abstract: A case of the heavy rain vortex which occurred during the period 14?15 July 1979 is studied using a limited-area mesoscale numerical model. This is a representative example of a group of warm southwest vortices that often ...

Abstract: The authors hypothesize a simple feedback mechanism between external Rossby waves and diabatic heating from convection. This mechanism could explain the large amplitude that external Rossby waves attain as they propagate ...