We thank Gaby Rädel (Department of Meteorology, University of Reading, UK) for providing the instantaneous forcing data for the HadSM3 HCabs experiment and Lawrence Jackson (University of Leeds, UK) for advice on the regression statistics. We also thank several anonymous reviewers for their helpful comments on this manuscript. We acknowledge the modelling 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. This work was funded by NERC Grant “An Observationally-Based Quantification of Climate Feedbacks” NE/E016189/1. Nicola Stuber was supported by the EU Framework 6 Integrated Project QUANTIFY.
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