Articles | Volume 12, issue 12
Geosci. Model Dev., 12, 4999–5028, 2019
https://doi.org/10.5194/gmd-12-4999-2019

Special issue: CMIP6 HighResMIP model descriptions and basic properties

Geosci. Model Dev., 12, 4999–5028, 2019
https://doi.org/10.5194/gmd-12-4999-2019
Model experiment description paper
03 Dec 2019
Model experiment description paper | 03 Dec 2019

Description of the resolution hierarchy of the global coupled HadGEM3-GC3.1 model as used in CMIP6 HighResMIP experiments

Malcolm J. Roberts et al.

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Short summary
We investigate the role that horizontal grid spacing plays in global coupled climate model simulations, together with examining the efficacy of a new design of simulation experiments that is being used by the community for multi-model comparison. We found that finer grid spacing in both atmosphere and ocean–sea ice models leads to a general reduction in bias compared to observations, and that once eddies in the ocean are resolved, several key climate processes are greatly improved.