The Canadian Climate Centre spectral atmospheric general circulation model

Abstract

A general description of the Canadian Climate Centre atmospheric general circulation model is presented. The model includes, either in explicit or parametric form, all of the physical processes deemed important for long‐term climate simulations. Detailed descriptions of the methods used to represent these processes are presented. Selected results from test runs with the model are presented to illustrate its sensitivity to some aspects of the subgrid‐scale vertical flux parameterizations and the gravity wave drag formulation.