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Simulations for CMIP6 with the AWI climate model AWI-CM-1-1
  • +11
  • Tido Semmler,
  • S. Danilov,
  • Paul Gierz,
  • Helge Goessling,
  • Jan Hegewald,
  • Claudia Hinrichs,
  • Nikolay V. Koldunov,
  • Narges Khosravi,
  • Longjiang Mu,
  • Thomas Rackow,
  • Dimitry Sein,
  • Dimitry Sidorenko,
  • Qiang Wang,
  • Thomas Jung
Tido Semmler
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research

Corresponding Author:[email protected]

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S. Danilov
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Paul Gierz
Alfred Wegener Institute for Polar and Marine Science, Alfred Wegener Institute for Polar and Marine Science
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Helge Goessling
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
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Jan Hegewald
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
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Claudia Hinrichs
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
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Nikolay V. Koldunov
Alfred Wegener Institute, Alfred Wegener Institute
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Narges Khosravi
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Longjiang Mu
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Thomas Rackow
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
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Dimitry Sein
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Dimitry Sidorenko
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Qiang Wang
Alfred Wegener Institute for Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research
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Thomas Jung
AWI, AWI
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Abstract

The Alfred Wegener Institute Climate Model (AWI-CM) participates for the first time in the Coupled Model Intercomparison Project (CMIP), CMIP6. The sea ice-ocean component, FESOM, runs on an unstructured mesh with horizontal resolutions ranging from 8 to 80 km. FESOM is coupled to the Max-Planck-Institute atmospheric model ECHAM 6.3 at a horizontal resolution of about 100 km. Using objective performance indices, it is shown that AWI-CM performs better than the average of CMIP5 models. AWI-CM shows an equilibrium climate sensitivity of 3.2°C, which is similar to the CMIP5 average, and a transient climate response of 2.1°C which is slightly higher than the CMIP5 average. The negative trend of Arctic sea ice extent in September over the past 30 years is 20-30% weaker in our simulations compared to observations. With the strongest emission scenario, the AMOC decreases by 25% until the end of the century which is less than the CMIP5 average of 40%. Patterns and even magnitude of simulated temperature and precipitation changes at the end of this century compared to present-day climate under the strong emission scenario SSP585 are similar to the multi-model CMIP5 mean. The simulations show a 11°C warming north of the Barents Sea and around 2 to 3°C over most parts of the ocean as well as a wetting of the Arctic, subpolar, tropical and Southern Ocean. Furthermore, in the northern mid-latitudes in boreal summer and autumn as well as in the southern mid-latitudes a more zonal atmospheric flow is projected throughout the year.
Sep 2020Published in Journal of Advances in Modeling Earth Systems volume 12 issue 9. 10.1029/2019MS002009