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Zhengyao Lu

Forskare

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Simulating the mid-holocene, last interglacial and mid-pliocene climate with ec-earth3-lr

Författare

  • Qiong Zhang
  • Ellen Berntell
  • Josefine Axelsson
  • Jie Chen
  • Zixuan Han
  • Wesley De Nooijer
  • Zhengyao Lu
  • Qiang Li
  • Qiang Zhang
  • Klaus Wyser
  • Shuting Yang
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Summary, in English

As global warming is proceeding due to rising greenhouse gas concentrations, the Earth system moves towards climate states that challenge adaptation. Past Earth system states are offering possible modelling systems for the global warming of the coming decades. These include the climate of the mid-Pliocene (∼ 3 Ma), the last interglacial (∼ 129-116 ka) and the mid-Holocene (∼ 6 ka). The simulations for these past warm periods are the key experiments in the Paleoclimate Model Intercomparison Project (PMIP) phase 4, contributing to phase 6 of the Coupled Model Intercomparison Project (CMIP6). Paleoclimate modelling has long been regarded as a robust out-of-sample test bed of the climate models used to project future climate changes. Here, we document the model setup for PMIP4 experiments with EC-Earth3-LR and present the large-scale features from the simulations for the mid-Holocene, the last interglacial and the mid-Pliocene. Using the pre-industrial climate as a reference state, we show global temperature changes, largescale Hadley circulation and Walker circulation, polar warming, global monsoons and the climate variability modes - El Niño-Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO). 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 past three warm periods in an individual model demonstrates the models ability to capture the climate response under different climate forcings, providing potential implications for confidence in future projections with the EC-Earth model.

Avdelning/ar

  • Institutionen för naturgeografi och ekosystemvetenskap
  • MERGE: ModElling the Regional and Global Earth system
  • Centrum för miljö- och klimatvetenskap (CEC)

Publiceringsår

2021-02

Språk

Engelska

Sidor

1147-1169

Publikation/Tidskrift/Serie

Geoscientific Model Development

Volym

14

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Copernicus GmbH

Ämne

  • Earth and Related Environmental Sciences

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1991-959X