We thank the two anonymous reviewers for their comments and the editor Dr. Brian Soden for help with evaluating the manuscript. We are grateful to Lorenzo Tomassini for a careful internal review at MPI-M, and we enjoyed discussions with Ian Eisenman on an earlier version of this manuscript. This research was supported by the Max Planck Society for the Advancement of Science. The CERES-EBAF data have been obtained online (edition 1A at http://eosweb.larc.nasa.gov/PRODOCS/ceres/level4_ebaf_table.html; editions 2.5A and 2.6r at http://ceres.larc.nasa.gov/order_data.php). We acknowledge the modeling groups, the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and the WCRP Working Group on Coupled Modelling (WGCM), for their roles in making available the WCRP CMIP3 multimodel dataset. Support of this dataset and this research is provided by the U.S. Department of Energy Office of Science.
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