JCHC thanks R. Seager, M. Rozendaal, R. Kleeman, and S. Khatiwala for useful conversations during the course of this work. We are grateful to D. Battisti, Z. Wu, and S. Nigam for extensive comments and suggestions on an earlier version of the paper. A. Giannini provided the topography used in this model. Much of the data gathering and manipulation was done through the web-based IRI/LDEO Climate Data Library developed by B. Blumenthal. This work was supported by NOAA Grant NA67GP0299 (IRI) to SEZ, and NSF Grant ATM99-86515 and NASA Grant JPLCIT 957647 to MAC; JCHC was supported by a NASA Earth Systems Science Fellowship. This is Lamont-Doherty Earth Observatory Contribution Number 6068.
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