AR5  concluded that developing countries needed a larger share of adaptation investments for anticipatory adaptation in the water sector  and that adaptive water management measures were critical in addressing climate-related uncertainty. Noble et al.  listed various examples of adaptation options, and water-related adaptation featured prominently in almost all categories. They also discussed the challenges of developing metrics for measuring adaptation outcomes and stressed the importance of transformational adaptation instead of incremental adaptation. Finally, SR1.5  made one of the first attempts to systematically assess the feasibility of adaptation options .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report