For all RKRs, additional global average warming is expected to increase risk. However, the increases vary significantly by RKR, and across the underlying key risks represented within each RKR. Geographic variation in key risk implications is only partially assessed in Chapter 16, but evidence can be drawn from the WGII individual regional chapters. Regionally, key risks are found to be potentially greatest in developing and transition economies , which is also where the least-cost emissions reductions globally are projected to be .See Figure 18.4 for an example of key risk geographic heterogeneity . Chapter 16 also maps the RKRs to an updated aggregate 'Reasons for Concern'  framing. Thus, increasing RKR implies increasing RFC associated with unique and threatened systems, extreme weather events, distribution of impacts, global aggregate impacts and large- scale singular events.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report