Future prospects - Ice Ages and Interglacials: Measurements, Interpretation, and Models - page 332

Figure 11.8. Annual emissions of carbon for three future scenarios in the 21st century.
Figure 11.9. Buildup of CO 2 in the atmosphere corresponding to the three scenarios in Figure
11.8 .
tion reaches 750 ppm by the end of the 21st century. If the CO 2 emission rate is
frozen at the 2010 level, the CO 2 concentration roughly doubles the pre-industrial
level by the end of the 21st century. Even the downward ramp leads to some
elevation of atmospheric CO 2 concentration. Hence, it seems likely that the CO 2