This work was supported by the National Science Council Grants NSC99-2111-M-001-003-MY3, NSC98-2625-M-492-011, and NSC99-2111-M-415-001. We acknowledge the modeling groups, the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and the WCRP’s Working Group on Coupled Modelling (WGCM), for their roles in making available the WCRP CMIP3 multimodel dataset. Support of this dataset is provided by the Office of Science, U.S. Department of Energy. Comments from two anonymous reviewers were very helpful in improving the quality of this paper.
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