McDougall, T.J., A.C. Hirst, M.H. England and P.C. McIntosh
Geophys. Res. Letters, 23, 2085-2088, 1996.

KeyWords
Ocean Circulation models. Tracer transports. Atmospheric models, eddy parameterisation.

Abstract
A new parameterization of eddies in a coarse resolution ocean model yields deep ocean salinities and temperatures that are significantly closer to observations than with previous parameterizations. This is achieved because dense water is able to flow over sills and into the deep ocean without being diluted with the surrounding water. In addition, the depth to which surface-induced tracers penetrate in the Southern Ocean is now realistic. This depth is overestimated by previous ocean models, including those used to estimate global warming. Adding the new eddy parameterizaton to coupled atmosphere-ocean models is expected to yield greater global warming.