Abstract: Two versions of a numerical model for cumulus convection are compared. One is symmetrical about a vertical plane, the other about a vertical axis. It is found that the axisymmetric model grows more vigorously than the other ...

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Abstract: A perturbation of relative humidity is used as a trigger to start the convection in a two-dimensional numerical model of a cumulus cloud. The effects of varying the width and depth of the perturbation are studied. The rate ...

Abstract: An existing numerical model of cumulus growth, treating condensation but not precipitation, is modified by the incorporation of a parameterized treatment of liquid phase microphysics. This modification improves the realism ...

Abstract: Three mathematical expressions for the terminal velocity of water drops in still air as a function of equivalent radius are compared with the experimental data of Gunn and Kinzer. Two of them, derived by curve-fitting ...