A General Form of Kuo's Cumulus Parameterization

John Molinari Department of Atmospheric Science, State University of New York at Albany, Albany, NY 12222

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Abstract

A formulation of Kuo's cumulus parameterization is described which satisfies arbitrary vertical profiles of apparent heat source (Q1) and apparent moisture sink (Q2). The approach requires little calculation, and for a given Q1 and Q2, contains only one parameter, the partitioning of available moisture between storage and precipitation. The proposed method is tested in the prediction of a mesoscale convective complex and its advantages and limitations are discussed.

Abstract

A formulation of Kuo's cumulus parameterization is described which satisfies arbitrary vertical profiles of apparent heat source (Q1) and apparent moisture sink (Q2). The approach requires little calculation, and for a given Q1 and Q2, contains only one parameter, the partitioning of available moisture between storage and precipitation. The proposed method is tested in the prediction of a mesoscale convective complex and its advantages and limitations are discussed.

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