Machine dependence and reproducibility for coupled climate simulations: the HadGEM3-GC3.1 CMIP Preindustrial simulation

Guarino, Maria-Vittoria; Sime, Louise C.; Schroeder, David; Lister, Grenville M. S.; Hatcher, Rosalyn

doi:https://doi.org/10.5194/gmd-13-139-2020

Articles | Volume 13, issue 1

https://doi.org/10.5194/gmd-13-139-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-13-139-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 1

Methods for assessment of models

|

16 Jan 2020

Methods for assessment of models |

| 16 Jan 2020

Machine dependence and reproducibility for coupled climate simulations: the HadGEM3-GC3.1 CMIP Preindustrial simulation

Maria-Vittoria Guarino, Louise C. Sime, David Schroeder, Grenville M. S. Lister, and Rosalyn Hatcher

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Final revised paper (published on 16 Jan 2020)
Preprint (discussion started on 16 May 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of the submitted article « Machine dependance as a source of uncertainty in climate models : The HadGEM3-GC3.1 CMIP Preindustrial simulation »', Anonymous Referee #1, 12 Jun 2019
RC2: 'Basic conceptual flaw', Anonymous Referee #2, 13 Jun 2019
AC1: 'Responses to Referees', Maria Vittoria Guarino, 07 Aug 2019

Peer-review completion

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

AR by Maria Vittoria Guarino on behalf of the Authors (08 Aug 2019) Author's response Manuscript

ED: Referee Nomination & Report Request started (29 Aug 2019) by Sophie Valcke

RR by Anonymous Referee #1 (15 Oct 2019)

RR by Anonymous Referee #2 (28 Oct 2019)

ED: Reconsider after major revisions (06 Nov 2019) by Sophie Valcke

AR by Maria Vittoria Guarino on behalf of the Authors (29 Nov 2019) Author's response Manuscript

ED: Publish as is (04 Dec 2019) by Sophie Valcke

Short summary

When the same weather or climate simulation is run on different high-performance computing (HPC) platforms, model outputs may not be identical for a given initial condition. Here, we investigate the behaviour of the Preindustrial simulation prepared by the UK Met Office for the forthcoming CMIP6 under different computing environments. Discrepancies between the means of key climate variables were analysed at different timescales, from decadal to centennial.