Protocol Experiment Period Notes
ScenarioMIP (O’Neill et al., 2016) ssp126 2015 - 2100 A high ambition scenario designed to produce significantly less than 2 degrees warming by 2100.
ssp245 2015 - 2100 Designed to represent a medium forcing future scenario. This is the test scenario to be held back for evaluation
ssp370 2015 - 2100 A medium-high forcing scenario with high emissions of near-term climate forcers (NTCF) such as methane and aerosol.
ssp370-lowNTCF 2015 - 2054 Variation of SSP370 with lower emissions of aerosol and their precursors
ssp585 2015 - 2100 This scenario represents the high end of the range of future pathways in the IAM literature and leads to a very large forcing of 8.5 Wm-2 in 2100.
CMIP6 (Eyring et al., 2016) historical 1850 – 2014 A simulation using historical emissions of all forcing agents designed to recreate the historically observed climate.
abrupt-4xCO2 500 years Idealised simulation in which CO2 is abruptly quadrupled. Other forcing agents remain unchanged.
1pctCO2 150 years Idealised simulation in which CO2 is gradually increased by 1% / year. Other forcing agents remain unchanged.
piControl 500 years Baseline simulation in which all forcing agents remain unchanged.
DAMIP (Gillett et al., 2016) hist-GHG 1850 – 2014 A historical simulation with varying concentrations for CO2 and other long-lived greenhouse-gases (only).
hist-aer 1850 – 2014 A historical simulation only forced by changes in anthropogenic aerosol.