We thank the National Center for Atmospheric Research for providing the CCSM model and output datasets used in this study and the staff at the Australian Partnership for Advanced Computing (APAC) National Facility for help in setting up the model. Model experiments were run at the APAC National Facility. Correspondence with I. Watterson helped shape many aspects of the study. This project was supported by the Australian Research Council, the CSIRO Flagship Fellowship program, and the University of New South Wales International Postgraduate Research Scholarship Scheme. Finally we thank the two anonymous reviewers for their suggestions and comments.
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