We thank the anonymous reviewers for their constructive and insightful comments on this work. The contributions of Chen and Schneider were supported by NSF Grants ATM-0653123 and AGS-1137902. Schneider was also supported by NSF Grants ATM-0830068 and ATM-0830062, NOAA Grant NA09OAR4310058, and NASA Grant NNX09AN50G. Our work is part of the CLIVAR International Climate of the Twentieth Century Project (C20C). The NCAR CISL provided computer resources for the simulations. Data analyses and plotting were done using GrADS.
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