Abstract: This paper summarizes recent studies of a variety of atmospheric phenomena in different parts of the world using the Penn State/NCAR mesoscale model. These phenomena include explosive cyclogenesis over the North Pacific ...

Abstract: It is hypothesized that planting bands of vegetation with widths of the order of 50?100 km in semiarid regions could, under favorable large-scale atmospheric conditions, result in increases of convective precipitation. ...

Abstract: A two-dimensional horizontal variable grid is derived that has maximum resolution at the center and minimum resolution near the boundaries of the grid. By using the analytic transformation that defines the variable grid, ...

Abstract: Steady-state solutions to the complete axisymmetric Navier-Stokes equations are obtained by an iterative technique for an intense pressure-gradient force representative of the tropical cyclone. Solutions for the horizontal ...

Abstract: A method for parameterizing the effects of deep cumulus clouds on the larger scale thermodynamic and moisture fields in numerical models is proposed. Rigorous derivations of the effect of cumulus clouds on their environment ...

Abstract: A cumulus parameterization scheme that utilizes a one-dimensional cloud model is tested in a revised, axisymmetric hurricane model. The details of how the parameterization scheme may he incorporated into a larger wale model ...

Abstract: This paper investigates the problem of initializing operational hurricane models with several types of real data. Imbalances in real data generate inertia-gravity waves with periods that vary strongly in different regions ...

Abstract: The role of asymmetries (large-scale horizontal eddies) in satisfying the mean angular momentum budget for the steady-state hurricane is studied by computing transverse circulations for a prescribed tangential vortex on ...

Abstract: A diagnostic axisymmetric model in isentropic coordinates is developed to study the effect of differential heating on the dynamics and energetics of the steady-state tropical cyclone. From the thermal forcing specified by ...

Abstract: Additional experiments with the slowly varying axisymmetric hurricane model described by Anthes are presented. Variable horizontal eddy viscosity coefficients are utilized to study circulations that result from an increased ...