Articles | Volume 17, issue 1
Clim. Past, 17, 203–227, 2021
https://doi.org/10.5194/cp-17-203-2021

Special issue: Paleoclimate Modelling Intercomparison Project phase 4 (PMIP4)...

Clim. Past, 17, 203–227, 2021
https://doi.org/10.5194/cp-17-203-2021

Research article 15 Jan 2021

Research article | 15 Jan 2021

DeepMIP: model intercomparison of early Eocene climatic optimum (EECO) large-scale climate features and comparison with proxy data

Daniel J. Lunt et al.

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This paper presents the first modelling results from the Deep-Time Model Intercomparison Project (DeepMIP), in which we focus on the early Eocene climatic optimum (EECO, 50 million years ago). We show that, in contrast to previous work, at least three models (CESM, GFDL, and NorESM) produce climate states that are consistent with proxy indicators of global mean temperature and polar amplification, and they achieve this at a CO2 concentration that is consistent with the CO2 proxy record.