Table 1.

Summary of experiments. IM1.9 and IM2.6 refer to the IMAGE versions of the Representative Concentration Pathways for 1.9 and 2.6 W m^-2 radiative forcing by 2100 (see Fig. 1e, f for a snapshot of changes in each scenario)

Name of experiment	Land-use change	Climate change by 2100	Transient atmospheric CO2
1.5 °C_IM19	IM1.9	1.5 °C	Diagnosed based on temperature profile
1.5 °C_IM26	IM2.6
2 °C_IM19	IM1.9	2 °C
2 °C_IM26	IM2.6
2 °C_IM26_1.5CO2	IM2.6		Diagnosed based on 1.5 °C temperature profile

Temperature change by 2100 is prescribed using idealized changes that asymptote to either 1.5° or 2 °C. The atmospheric CO₂ concentration is diagnosed based on the associated temperature profile and each climate model’s climate sensitivity (Methods). The 2 °C_IM26_1.5CO2 experiment has a 2 °C climate change profile but the CO₂ concentrations from the 1.5 °C temperature profile