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M. Eby, K. Zickfeld, A. Montenegro, D. Archer, K. J. Meissner, and A. J. Weaver

-Reimer , G. Schurgers , M. Vizcaíno , and A. M. E. Winguth , 2007 : Long-term effects of anthropogenic CO 2 emissions simulated with a complex earth system model. Climate Dyn. , 28 , 599 – 633 . Montenegro , A. , V. Brovkin , M. Eby , D. Archer , and A. J. Weaver , 2007 : Long term fate of anthropogenic carbon. Geophys. Res. Lett. , 34 , L19707 . doi:10.1029/2007GL030905 . Orr , J. C. , and Coauthors , 2005 : Anthropogenic ocean acidification over the twenty

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J. Paul Spence, Michael Eby, and Andrew J. Weaver

IPCC TAR reported that a lack of experiments exploring the impacts of resolution restricts the ability to draw firm conclusions. We address this need by investigating AMOC variability in a series of global models with horizontal resolutions increasing into the ocean eddy-permitting range. Of the few studies that have systematically examined the effects of increasing model resolution, none evaluated differences in the response to deep water formation perturbations. Earlier research focused on ocean

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Marc d’Orgeville and W. Richard Peltier

anthropogenically forced global warming. The available observations, both instrumental records as well as climate proxies, are too sparse to serve as a means to identify the mechanisms that lead to the occurrence of such low-frequency climate variability in the North Atlantic basin. We are therefore obliged to resort to the analysis of model simulations. From this perspective, it has been clear even on the basis of the earliest applications of global coupled ocean–atmosphere general circulation models based on

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