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

Data sets

MOHC HadGEM3-GC31-LL model output prepared for CMIP6 CMIP Jeff Ridley, Matthew Menary, Till Kuhlbrodt, Martin Andrews, and Tim Andrews

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.