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Table 2

Projected increases in mean air temperature under different RCPs and corresponding CO2 levels for two future periods

RCPChange in mean temperature (°C)
CO2 equiv. (ppm)Key features
2055s2090s
RCP 2.6 1.0 1.0 490 Peak and decline, which leads to very low greenhouse gas concentration 
RCP 4.5 1.4 1.8 650 Stabilization scenario, radiative forcing is stabilized before 2100 
RCP 6.0 1.3 2.2 850 Stabilization scenario, radiative forcing is stabilized after 2100 
RCPChange in mean temperature (°C)
CO2 equiv. (ppm)Key features
2055s2090s
RCP 2.6 1.0 1.0 490 Peak and decline, which leads to very low greenhouse gas concentration 
RCP 4.5 1.4 1.8 650 Stabilization scenario, radiative forcing is stabilized before 2100 
RCP 6.0 1.3 2.2 850 Stabilization scenario, radiative forcing is stabilized after 2100 

Sources:Moss et al. (2010) and Stocker et al. (2013).

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