Abstract: The analytic solutions in time to the highly truncated (low-order) spectral vorticity equation, involving the nonlinear interaction of one planetary wave with an arbitrary zonal flow, have been investigated for a wide ...

Abstract: A fine-mesh, limited-area, finite-difference model has been developed both to predict precipitation over a limited geographic region and to be utilized in experiments for precipitation modification. The model is primitive ...

Abstract: The vertical levels used in atmospheric models are selected for a variety of reasons, but the selection process has not been systematized. The study presented herein represents an attempt to do so. An atmospheric model is ...

Abstract: A general numerical integration formula is presented that generates many of the commonly used one-dimensional finite-difference schemes. A number of these schemes are tested on a simple wave equation; three implicit and ...

Abstract: The impact of gravity modes in atmospheric model predictions is assessed quantitatively by comparing integrations with a normal mode initialized primitive equation model and its corresponding pseudogeostrophic form to ...

Abstract: A procedure is outlined which adjusts the initial conditions for any prediction model of a planetary fluid such that no motions of the fluid will evolve with high-frequency, gravity-type time scales despite the model's ...

Abstract: Although atmospheric prediction models appear to yield results similar to observation, both their detailed predictive capability and their time-averaged forecasts depend on space truncation. Such dependence may be readily ...

Abstract: Growth of incipient precipitation particles by collision and coalescence with cloud droplets is one of the primary mechanisms of natural rain. Comparison of previous research shows wide divergence between various theoretical ...