Radiative-dynamical climatology of the first-generation Canadian middle atmosphere model

Beagley, S. R., de Grandpré, J., Koshyk, J. N., McFarlane, N. A. and Shepherd, T. G. ORCID: https://orcid.org/0000-0002-6631-9968 (1997) Radiative-dynamical climatology of the first-generation Canadian middle atmosphere model. Atmosphere-Ocean, 35 (3). pp. 293-331. ISSN 1480-9214 doi: 10.1080/07055900.1997.9649595

Abstract/Summary

The Canadian Middle Atmosphere Modelling (MAM) project is a collaboration between thé Atmospheric Environment Service (AES) of Environment Canada and several Canadian universities. Its goal is thé development of a comprehensive General Circulation Model of the troposphere-stratosphere-mesosphere System, starting from the AES/CCCma third-generation atmospheric General Circulation Model. This paper describes the basic features of the first-generation Canadian MAM and some aspects of its radiative-dynamical climatology. Standard first-order mean diagnostics are presented for monthly means and for the annual cycle of zonal-mean winds and temperatures. The mean meridional circulation is examined, and comparison is made between thé steady diabatic, downward controlled, and residual stream functions. It is found that downward control holds quite well in the monthly mean through most of the middle atmosphere, even during equinoctal periods. The relative roles of different drag processes in determining the mean downwelling over the wintertime polar middle stratosphere is examined, and the vertical structure of the drag is quantified.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/32861
Item Type	Article
Refereed	Yes
Divisions	No Reading authors. Back catalogue items Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	Taylor & Francis
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