Water-related adaptation is being observed across sectors and regions , and beneficial outcomes are documented across different dimensions . A limited set of frequently documented adaptation responses is also represented in quantitative projections of adaptation effectiveness . However, due to the largely different assessment methodologies for measuring beneficial outcomes for current adaptations and effectiveness to reduce impacts for future adaptations, comparing current and future adaptation outcomes is not straightforward. For current adaptation responses, beneficial outcomes may or may not translate to climate risk reduction, making risk reduction potential of observed adaptation a significant gap in our current understanding. The large diversity of outcomes across regions and assessed options becomes apparent for future adaptation options, with the group of 'inconclusive' outcomes indicating a large spread of results across regions. This underlines the contextual nature of adaptation and boundary conditions for implementation that can determine the success of adaptation outcomes, now or in the future.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report