ISMIP6 Coupled Ice Sheet Climate Experiments
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This page holds information specifically of relevance to the groups conducting the coupled AOGCM-ISM experiments.
Experiments
The published ISMIP6 description (Nowicki et al, GMD 2016) lays out four experiments for coupled AOGCM-ISM models to complete, which directly parallel other CMIP6 experiments with standalone AOGCMs and ISMIP6 runs with standalone ISMs (see table at main ISMIP6 wiki page).
| Tier | New ISMIP6 CMIP6 exp. (Coupled AOGCM-ISM) |
| 1 | Pre-Industrial Control (piControl-withism) |
| 1 | 1% yr-1 CO2 to quadrupling CO2 (1pctCO2to4x-withism) |
| 2 | ScenarioMIP SSP5-8.5 up to year 2300 (ssp585-withism) |
| 2 | CMIP6 Historical Simulation (historical-withism) |
However, at the ISMIP6 meeting in Sassenheim it was decided that the standalone ISMs would use a baseline of 1970-2000 as their control period, rather than the pre-industrial. Depending on their initialisation methods, AOGCM-ISM modellers may thus also wish to run their Tier 1 experiments relative to a late 20th century climatology, and omit the historical-withism simulation entirely
Discussions
Notes from a discussion at the ISMIP6 Sassenheim meeting between representatives of UKESM, CESM, MPI-ESM, MIROC_ESM, EC-Earth and other interested parties.
If you'd like to be involved in further group communications about the coupled AOGCM-ISM models, please email: robin.smith@ncas.ac.uk
