Climate of the Past
Climate of the Past
CP
Articles | Volume 11, issue 12
Articles | Volume 11, issue 12
https://doi.org/10.5194/cp-11-1801-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-11-1801-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 11, issue 12
Research article
 | 
21 Dec 2015
Research article |  | 21 Dec 2015

On the state dependency of the equilibrium climate sensitivity during the last 5 million years

P. Köhler, B. de Boer, A. S. von der Heydt, L. B. Stap, and R. S. W. van de Wal

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Short summary
We find that the specific equilibrium climate sensitivity due to radiative forcing of CO2 and land ice albedo has been state-dependent for the last 2.1Myr (most of the Pleistocene). Its value is ~45% larger during intermediate glaciated climates and interglacial periods than during Pleistocene full glacial conditions. The state dependency is mainly caused by a latitudinal dependency in ice sheet area changes. Due to uncertainties in CO2, firm conclusions for the Pliocene are not yet possible.
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