Articles | Volume 20, issue 13
Atmos. Chem. Phys., 20, 7829–7842, 2020
https://doi.org/10.5194/acp-20-7829-2020
Atmos. Chem. Phys., 20, 7829–7842, 2020
https://doi.org/10.5194/acp-20-7829-2020

Research article 06 Jul 2020

Research article | 06 Jul 2020

On the climate sensitivity and historical warming evolution in recent coupled model ensembles

Clare Marie Flynn and Thorsten Mauritsen

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Clare Flynn on behalf of the Authors (27 May 2020)  Author's response    Manuscript
ED: Publish as is (06 Jun 2020) by Hailong Wang
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Short summary
The range of climate sensitivity of models participating in CMIP6 has increased relative to models participating in CMIP5 due to decreases in the total feedback parameter. This is caused by increases in the shortwave all-sky and clear-sky feedbacks, particularly over the Southern Ocean. These shifts between CMIP6 and CMIP5 did not arise by chance. Both CMIP5 and CMIP6 models are found to exhibit aerosol forcing that is too strong, causing too much cooling relative to observations.
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