Results from the implementation of the Elastic Viscous Plastic sea ice rheology in HadCM3

Connolley, W. M.; Keen, A. B.; McLaren, A. J.

We present results of an implementation of the Elastic Viscous Plastic (EVP) sea ice dynamics scheme into the Hadley Centre coupled ocean-atmosphere climate model HadCM3. Although the large-scale simulation of sea ice in HadCM3 is quite good with this model, the lack of a full dynamical model leads to errors in the detailed representation of sea ice and limits our confidence in its future predictions. We find that introducing the EVP scheme results in a worse initial simulation of the sea ice. This paper documents various enhancements made to improve the simulation, resulting in a sea ice simulation that is better than the original HadCM3 scheme overall. Importantly, it is more physically based and provides a more solid foundation for future development. We then consider the interannual variability of the sea ice in the new model and demonstrate improvements over the HadCM3 simulation.

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Connolley, W. M. / Keen, A. B. / McLaren, A. J.: Results from the implementation of the Elastic Viscous Plastic sea ice rheology in HadCM3. 2006. Copernicus Publications.

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