Figure 3.5

Figure 3.5 | (a) Process for creating the AR6 scenario database and selecting the illustrative (mitigation) pathways. The compiled scenarios in the AR6 scenarios database were vetted for consistency with historical statistics and subsequently a temperature classification was added using climate model emulators. The illustrative (mitigation) pathways were selected from the full set of pathways based on storylines of critical mitigation strategies that emerged from the assessment. (b) An overview of the Illustrative Pathways selected for use in IPCC AR6 WGIII, consisting of pathways illustrative of higher emissions, Current Policies (CurPol) and Moderate Action (ModAct), and Illustrative Mitigation Pathways (IMPs): gradual strengthening of current policies (IMP-GS), extensive use of net negative emissions (IMP-Neg), renewables (IMP-Ren), low demand (IMP-LD), and shifting pathways (IMP-SP). The Ren2.0 and Neg2.0 scenarios are alternative scenarios to the IMPs. These pathways are based on renewables and extensive use of negative emissions, respectively, but leading to temperature levels comparable to the C3 category and have sometimes been used for comparison.