Figure 2

(a) Comparison between the ZD²OM calculation of CO₂ emissions rates and historical estimates of anthropogenic CO₂ emissions rate for the industrial period. ZD²OM emission rates are computed from numerical integration of Equations (13), and (16) forced with the historical CO₂ concentrations. Historical emission estimates are from ref. 46 updated to the present using data from ref. 23. Uncertainty bounds are from Table 6.1 of ref. 22 (b) ZD²OM estimate of global temperature change under the four Representative Concentration Pathway (RCP) scenarios. (c) Temperature versus cumulative CO₂ emissions curves produced by the ZD²OM under the four RCPs.