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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/gmd-2020-208
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2020-208
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: model experiment description paper 02 Sep 2020

Submitted as: model experiment description paper | 02 Sep 2020

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This preprint is currently under review for the journal GMD.

Simulating the mid-Holocene, Last Interglacial and mid-Pliocene climate with EC-Earth3-LR

Qiong Zhang1, Qiang Li1, Qiang Zhang1, Ellen Berntell1, Josefine Axelsson1, Jie Chen1,2, Zixuan Han1, Wesley de Nooijer1, Zhengyao Lu3, Klaus Wyser4, and Shuting Yang5 Qiong Zhang et al.
  • 1Department of Physical Geography, Stockholm University, Stockholm, 10691, Sweden
  • 2College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China
  • 3Department of Physical Geography and Ecosystem Science, Lund University, Lund, 22100, Sweden
  • 4Rossby Centre, Swedish Metrological and Hydrological Institute, Norrköping, 60176, Sweden
  • 5Danish Meteorological Institute, Copenhagen, 2100, Denmark

Abstract. Paleoclimate modelling has long been regarded as a strong out-of-sample test-bed of the climate models that are used for the projection of future climate changes. For the first time, the EC-Earth model contributes to the Paleoclimate Model Intercomparison Project (PMIP) phase 4, which is part of the current sixth phase of the Coupled Model Intercomparison Project (CMIP6). Here, we document the model setup for PMIP4 experiments with EC-Earth3-LR and present the results on the large-scale features from the completed production simulations for the three past warm periods (mid-Holocene, Last Interglacial, and mid-Pliocene). Using the pre-industrial climate as a reference state, we show the changes in global temperature, large scale Hadley circulation and Walker circulation, polar warming and global monsoons, as well as the climate variability modes (ENSO, PDO, AMO). The EC-Earth3-LR simulates reasonable climate responses during past warm periods as shown in the other PMIP4-CMIP6 model ensemble. The systematic comparison of these climate changes in three past warm periods in an individual model demonstrates the ability of the model to capture the climate response under different climate forcings, providing potential implications for confidence in future projections with EC-Earth model.

Qiong Zhang et al.

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Latest update: 28 Sep 2020
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Short summary
Paleoclimate modelling has long been regarded as a strong out-of-sample test-bed of the climate models that are used for the projection of future climate changes. Here, we document the model experiments setup for the three past warm periods with EC-Earth3-LR and present the results on the large-scale features from the completed production simulations. The simulations demonstrate the good performance of the model to capture the climate response under different climate forcings.
Paleoclimate modelling has long been regarded as a strong out-of-sample test-bed of the climate...
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