Articles | Volume 13, issue 8
Geosci. Model Dev., 13, 3465–3474, 2020
https://doi.org/10.5194/gmd-13-3465-2020
Geosci. Model Dev., 13, 3465–3474, 2020
https://doi.org/10.5194/gmd-13-3465-2020

Development and technical paper 04 Aug 2020

Development and technical paper | 04 Aug 2020

On the increased climate sensitivity in the EC-Earth model from CMIP5 to CMIP6

Klaus Wyser et al.

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AR by Klaus Wyser on behalf of the Authors (31 Mar 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (22 May 2020) by Fiona O'Connor
AR by Klaus Wyser on behalf of the Authors (01 Jun 2020)  Author's response    Manuscript
ED: Publish as is (03 Jul 2020) by Fiona O'Connor
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Short summary
The EC-Earth model used for CMIP6 is found to have a higher equilibrium climate sensitivity (ECS) than its predecessor used for CMIP5. In a series of sensitivity experiments, we investigate which model updates since CMIP5 have contributed to the increase in ECS. The main reason for the higher sensitivity in the EC-Earth model is the improved representation of the aerosol–radiation and aerosol–cloud interactions.