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High climate sensitivity in CMIP6 model not supported by paleoclimate

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Fig. 1: Model-data comparison of GMST and MTG.

Data availability

CESM1 simulation data are available in the Zenodo repository at CESM2 data can be requested from J.Z.

Code availability

CESM2 model code is available at CESM1 and CCSM4 model code is available at


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This work was supported by Heising-Simons Foundation (grant nos. 2016-05 and 2016-12) and National Science Foundation (NSF; grant no. 2002397) to C.J.P. We acknowledge the computational resources provided by the CESM Paleoclimate Working Group for high-performance computing support from Cheyenne ( provided by the National Center for Atmospheric Research’s CISL, sponsored by NSF. The CESM project is supported primarily by the NSF. This material is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the NSF under Cooperative Agreement no. 1852977.

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Correspondence to Jiang Zhu.

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Zhu, J., Poulsen, C.J. & Otto-Bliesner, B.L. High climate sensitivity in CMIP6 model not supported by paleoclimate. Nat. Clim. Chang. 10, 378–379 (2020).

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