A Comparison of a Numerical Model and an Approximate Analytical Model of the Growth of Snowflakes

H. G. Leighton Department of Meteorology, McGill University, Montreal, Quebec, Canada H3A 2K6

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Abstract

A comparison is made between the evolution of initially exponential snowflake size distributions growing by deposition and aggregation as calculated with a numerical model and with the approximate analytical model of Passarelli. The agreement between the two models implies that to a good approximation the assumptions of the analytical model are consistent with the additional assumption that the distribution maintains an exponential shape.

Abstract

A comparison is made between the evolution of initially exponential snowflake size distributions growing by deposition and aggregation as calculated with a numerical model and with the approximate analytical model of Passarelli. The agreement between the two models implies that to a good approximation the assumptions of the analytical model are consistent with the additional assumption that the distribution maintains an exponential shape.

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