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  • Greene, A.M., L. Goddard and U. Lall, 2006: Probabilistic multimodel regional temperature change projections. Journal of Climate, 19, 4326-4343, 10.1175/JCLI3864.1.

Regional temperature change projections for the twenty-first century are generated using a multimodel ensemble of atmosphere­-ocean general circulation models. The models are assigned coefficients jointly, using a Bayesian linear model fitted to regional observations and simulations of the climate of the twentieth century. Probability models with varying degrees of complexity are explored, and a selection is made based on Bayesian deviance statistics, coefficient properties, and a classical cross-validation measure utilizing
temporally averaged data. The model selected is shown to be superior in predictive skill to a naïve model consisting of the unweighted mean of the underlying atmosphere­ocean GCM (AOGCM) simulations, although the skill differential varies regionally. Temperature projections for the A2 and B1 scenarios from the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios are presented.

Full Article: http://iri.columbia.edu/~amg/greene_goddard_lall.pdf

Last Updated: 2007-02-26

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