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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 2
Geosci. Model Dev., 11, 713-723, 2018
https://doi.org/10.5194/gmd-11-713-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Geosci. Model Dev., 11, 713-723, 2018
https://doi.org/10.5194/gmd-11-713-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 27 Feb 2018

Model description paper | 27 Feb 2018

The sea ice model component of HadGEM3-GC3.1

Jeff K. Ridley1, Edward W. Blockley1, Ann B. Keen1, Jamie G. L. Rae1, Alex E. West1, and David Schroeder2 Jeff K. Ridley et al.
  • 1Met Office, Exeter, EX1 3PB, UK
  • 2Department of Meteorology, University of Reading, Reading, RG6 6BB, UK

Abstract. A new sea ice configuration, GSI8.1, is implemented in the Met Office global coupled configuration HadGEM3-GC3.1 which will be used for all CMIP6 (Coupled Model Intercomparison Project Phase 6) simulations. The inclusion of multi-layer thermodynamics has required a semi-implicit coupling scheme between atmosphere and sea ice to ensure the stability of the solver. Here we describe the sea ice model component and show that the Arctic thickness and extent compare well with observationally based data.

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The sea ice component of the Met Office coupled climate model, HadGEM3-GC3.1, is presented and evaluated. We determine that the mean state of the sea ice is well reproduced for the Arctic; however, a warm sea surface temperature bias over the Southern Ocean results in a low Antarctic sea ice cover.
The sea ice component of the Met Office coupled climate model, HadGEM3-GC3.1, is presented and...
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