Data and code availability

The baseline code is available on GitHub (https://github.com/duncanwp/ClimateBench) and a DOI for the specific version, including that used to generate the plots in this paper, will be made available on acceptance.
The benchmark data is available here:https://doi.org/10.5281/zenodo.5196512. The raw CMIP6 data used here are available through the Earth System Grid Federation and can be accessed through different international nodes e.g.:https://esgf-index1.ceda.ac.uk/search/cmip6-ceda/.