The coupling of statistical cloud schemes with mass‐flux convection schemes is addressed. Source terms representing the impact of convection are derived within the framework of prognostic equations for the width and asymmetry of the probability distribution function of total water mixing ratio. The accuracy of these source terms is quantified by examining output from a cloud‐resolving model simulation of deep convection. Practical suggestions for the inclusion of these source terms in large‐scale models are offered.
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Klein et al. (2005) studied this question.