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H. A. S. is grateful to the Linus Pauling Distinguished Postdoctoral Fellowship, sponsored by the U.S. DOE Office of Science's Pacific Northwest National Laboratory for facilities and funding. Support for O. A. G. and P. J. R. was provided by the Regional and Global Climate Modeling Program as a contribution to the HiLAT project. The Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by Battelle Memorial Institute under contract DE‐AC05‐76RL01830. All authors acknowledge the World Climate Research Program's Working Group on Coupled Modeling, which is responsible for CMIP and thank the climate modeling groups (listed in the SI and Table 1) for producing and making available their model output. For CMIP, the U.S. DOE's Program for Climate Model Diagnosis and Intercomparison provides coordinating support and led development of software infrastructure in partnership with the Global Organization for Earth System Science Portals. Model output data generated for this study have been published on the Zenodo data repository at https://doi.org/10.5281/zenodo.1283483. Finally, all authors thank Greg Flato and two anonymous reviewers for helpful critiques of the submitted manuscript.