NUMERICAL MODELS OF A TROPICAL CUMULUS CLOUD WITH BILATERAL AND AXIAL SYMMETRY

F. W. MURRAY The Rand Corporation, Santa Monica, Calif.

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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 and more realistically represents the relations between updraft and downdraft, the shape, and other characteristics. The previous findings of Ogura are generally confirmed and extended.

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 and more realistically represents the relations between updraft and downdraft, the shape, and other characteristics. The previous findings of Ogura are generally confirmed and extended.

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