We wish to thank various modeling groups for providing their outputs, the Program for Climate Model Diagnostics and Intercomparison (PCMDI) and the WCRP’s Working Group on Coupled Modeling (WGCM) for collecting, archiving, and making the WCRP CMIP3 multimodel dataset readily available, and the Office of Science, U.S. Department of Energy for supporting this dataset. We thank the GFDL for providing the outputs of their ensemble integrations, and M. Watanabe for releasing the LBM codes. We wish to acknowledge use of the Ferret program for analysis and graphics. Comments from anonymous reviewers were helpful in improving the paper. B. Xiang and X. Zheng are appreciated for technical discussions. This work is supported by NSF, NOAA, NASA, and JAMSTEC.
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