Memorandum for the Petitioners | 34 How the level of global warming affects impacts and/or risks associated with the Reasons for Concern (RFCs) and selected natural, managed and human systems Five Reasons For Concern (RFCs) illustrate the impacts and risks of different levels ofglobal warming for people, economies and ecosystems across sectors and regions. Impacts and risks associated fe Ins : 1 RFCL Uniqueand systems | ag i bia! in 4 threatened with the Reasons for Concern RFC2 RFC3 Extreme —_ Distribution of impacts events RFC4 Global impacts aggregate significant irreversibility or (RFCs) the persistence of | Very highs ‘ial High | 1 Ian weather L |im Purple indicates very high risks of severe impacts/risks and the presence of TES 20 6 RFCS _Large scale events 901 climate-retated hazards, combined with limited ability to adapt due to the nature of the hazard or impacts/risks. Red indicates severe and widespread impacts/risks. Moderate Undetectatie Yellow indicates that impacts/risks are detectable and attributable to climate change with at least medium confidence. White indicates that no impacts are detectable and auribuEesblete climate change. Level of additional Impactirisk due singular sa Impacts and risks for selected natural, managed and human systems 4 ° F216 3 2: |e Ty i ii i Warm-water Mangroves corals 1M, ie Small-scale low-latitude fisheries ‘i " “ le Arctic region a Terrestrial ecosystems i i " i Coastal flooding | i” M Fluvial _flooding la Crop yields {ue 1 biad | Tourism ie Im . ‘es Heat-related and mortality Confidence level for transition: L=Low, M=Medium, H=High and Vit=Very high Figure 2: How the level of global warming affects impacts and/or risks associated with the Reasons for Concern (RFCs) and selected natural, managed, and human systems!” ' IPCC 1.5°C SR SPM, available at https://www.ipce.ch/sr15/graphics/ (last accessed on 12 September 2019).