The Formulation of the André Robert MC2(Mesoscale Compressible Community) Model

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Abstract
A description of the numerical formulation of the dynamics module of the Mesoscale Compressible Community (MC2) model is presented. This model is based on the fully elastic, semi-implicit semi-Lagrangian model developed by Tanguay et al. (1990). This version was extended to incorporate topography by Denis (1990), and later variable vertical resolution was added as an option. This article is a condensed version of an extensive report by Bergeron et al. (1994) that documents all the numerical aspects of the MC2 model. The performance of the model is illustrated through a sample of results obtained on a wide range of physical problems.