We are grateful for support by the National Science Foundation (Grant ATM-0450059), by the National Aeronautics and Space Administration (Grant NAG512559), by a David and Lucile Packard Fellowship, and by a UCLA Dissertation Year Fellowship. We thank Chris Walker for assistance with the GCM and related software and Paul O’Gorman, Bjorn Stevens, and Duane Waliser for helpful comments on drafts of this paper. The simulations reported in this paper were carried out on Caltech’s Geological and Planetary Sciences Dell cluster.
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