As a general method related to adaptive management, 'early warnings' are the most frequently discussed adaptation option to deal with a changing climate across all key risks, sectors and regions. Early-warning systems are an adaptation that can benefit more than 5 billion people . Examples range from short-term disaster early-warning systems to revision of sea level rise plans based on monitoring. For example, the humanitarian community is investing in forecast-based financing systems to prepare for extreme events . Forecasts are also used to manage hydropower dams , to trigger interventions before public health emergencies  and to alert fishermen of algal blooms in the world's oceans . Table 17.2 provides examples of adaptations using early-warning systems that have been used to address each of the key risks.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report