Editing IPCC:AR6/WGIII/Chapter-2 (section)

=== FAQ 2.3 | How much time do we have to act to keep global warming below 1.5 degrees? ===

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If global CO 2 emissions continue at current rates, the remaining carbon budget for keeping warming to 1.5°C will likely be exhausted before 2030. Between 1850 and 2019, total cumulative CO 2 emissions from the fossil fuel industry (FFI) and agriculture, forestry, and other land use (AFOLU) were 2400 (±240 GtCO 2 ). Of these, about 410 ± 30 GtCO 2 were added since 2010. This is about the same size as the remaining carbon budget for keeping global warming to 1.5°C and between one-third and one-half of the 1150 ± 220 (1350, 1700) GtCO 2 for limiting global warming below 2°C with a 67% (50%, 33%) probability, respectively (Canadell et al. 2021). At current (2019) rates of emissions, it would only take 8 (2–15) and 25 (18–35) years to emit the equivalent amount of CO 2 for a 67th percentile 1.5°C and 2°C remaining carbon budget, respectively. This highlights the dependence of 1.5°C pathways on the availability of substantial CO 2 removal capacities, as discussed in Chapters 3, 4, and 12, but also [[#2.7|Section 2.7]] of this chapter.

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