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

Roberts, Malcolm J.; Baker, Alex; Blockley, Ed W.; Calvert, Daley; Coward, Andrew; Hewitt, Helene T.; Jackson, Laura C.; Kuhlbrodt, Till; Mathiot, Pierre; Roberts, Christopher D.; Schiemann, Reinhard; Seddon, Jon; Vannière, Benoît; Vidale, Pier Luigi

doi:https://doi.org/10.5194/gmd-12-4999-2019

Articles | Volume 12, issue 12

https://doi.org/10.5194/gmd-12-4999-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

CMIP6 HighResMIP model descriptions and basic properties

https://doi.org/10.5194/gmd-12-4999-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 12

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, Alex Baker, Ed W. Blockley, Daley Calvert, Andrew Coward, Helene T. Hewitt, Laura C. Jackson, Till Kuhlbrodt, Pierre Mathiot, Christopher D. Roberts, Reinhard Schiemann, Jon Seddon, Benoît Vannière, and Pier Luigi Vidale

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Final revised paper (published on 03 Dec 2019)
Preprint (discussion started on 11 Jun 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'comments on Roberts et al manuscript', Stephen M. Griffies, 15 Jul 2019
RC2: 'Comments on Roberts et al 2019', Luke Van Roekel, 16 Jul 2019
RC3: 'Review of “Description of the resolution hierarchy of the global coupled HadGEM3-GC3.1 model as used in CMIP6 HighResMIP experiments by M. Roberts et al. submitted to GMD', Justin Small, 21 Jul 2019
AC1: 'AC2', Malcolm J. Roberts, 03 Sep 2019
AC2: 'AC1', Malcolm J. Roberts, 03 Sep 2019
AC3: 'AC3', Malcolm J. Roberts, 03 Sep 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Malcolm J. Roberts on behalf of the Authors (04 Sep 2019) Author's response

ED: Publish as is (12 Oct 2019) by Richard Neale

AR by Malcolm J. Roberts on behalf of the Authors (14 Oct 2019)

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.