Future changes in climate-related migration and displacement are expected to vary by region and over time according to:  region-specific changes in climatic drivers,  changes in the future adaptive capacity of exposed populations,  population growth in areas most exposed to climatic risks and  future changes in mediating factors such as international development and migration policies  . This section assesses future risks associated with changes in the frequency and/or severity of storms, floods, droughts, extreme heat, wildfires and other events assessed in Section 7.2 that currently affect migration and displacement patterns, as well as the impacts of emerging hazards, including average temperature increases that may affect the habitability of settlements in arid regions and the tropics, and sea level rise and associated hazards that threaten low- lying coastal settlements. Studies assessed here consider projected changes in future exposure to hazards over a variety of geographical and temporal periods, with some considering changes in population numbers in exposed areas. The uneven distribution of exposure of age cohorts is typically overlooked in existing research. For example, people younger than age 10 in the year 2020 are projected to experience a nearly four-fold increase in extreme events under 1.5℃ of global warming and a five-fold increase under 3℃ warming; such increases in exposure would not be experienced by a person of the age of 55 in 2020 in their remaining lifetime under any warming scenario .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report