Advanced Prediction in Polar regions and beyond: Modelling, observing system design and LInkages associated with ArctiC ClimATE change
Published November 18, 2019 | Version v1
Journal article Open

Evaluation of FESOM2.0 coupled to ECHAM6.3: Pre-industrial and HighResMIP simulations

Creators

  • 1. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
  • 2. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; MARUM—Center for Marine Environmental Sciences, Bremen,Germany
  • 3. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Department of Mathematics and Logistics, Jacobs University, Bremen, Germany; A. M. Obukhov Institute of Atmospheric Physics Russian Academy of Science, Moscow, Russia
  • 4. Department of Physics and Mathematics, University of Alcala, Alcala, Spain
  • 5. Department of Mathematics and Logistics, Jacobs University, Bremen, Germany
  • 6. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; MARUM—Center for Marine Environmental Sciences, Bremen,Germany; Institute of Environmental Physics, University of Bremen, Bremen, Germany.
  • 7. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, Russia.
  • 8. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
  • 9. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Institute of Environmental Physics, University of Bremen, Bremen, Germany

Description

A new global climate model setup using FESOM2.0 for the sea ice-ocean component and ECHAM6.3 for the atmosphere and land-surface has been developed. Replacing FESOM1.4 by FESOM2.0 promises a higher efficiency of the new climate setup compared to its predecessor. The new setup allows for long-term climate integrations using a locally eddy-resolving ocean. Here it is evaluated in terms of (1) the mean state and long-term drift under pre-industrial climate conditions, (2) the fidelity in simulating the historical warming, and (3) differences between coarse and eddy- resolving ocean configurations. The results show that the realism of the new climate setup is overall within the range of existing models. In terms of oceanic temperatures, the historical warming signal is of smaller amplitude than the model drift in case of a relatively short spin-up. However, it is argued that the strategy of ‘de-drifting’ climate runs after the short spin-up, proposed by the HighResMIP protocol, allows one to isolate the warming signal. Moreover, the eddy-permitting/resolving ocean setup shows notable improvements regarding the simulation of oceanic surface temperatures, in particular in the Southern Ocean.

Files

Sidorenko_et_al-2019-Journal_of_Advances_in_Modeling_Earth_Systems.pdf

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Additional details

Funding

European Commission
APPLICATE – Advanced Prediction in Polar regions and beyond: Modelling, observing system design and LInkages associated with ArctiC ClimATE change 727862