There is high confidence that coastal risks will increase by at least one order of magnitude over the 21st century due to committed SLR . Exposure of population and economic assets to coastal hazards is projected to increase over the next decades, particularly in coastal regions with fast-growing populations in Africa, Southeast Asia and Small Islands  . For RCP8.5, 2.5-9% of the global population and 12-20% of the global gross domestic product is projected to be exposed to coastal flooding by 2100 . Above 3ºC global warming levels  and with low adaptation, SLR may cause disruptions to ports and coastal infrastructure , which in turn may cascade and amplify across sectors and regions, generating impacts to financial systems . Depending on the hydrogeological context, SLR causes salinisation of groundwater, estuaries, wetlands and soils, adding constraints to water management and livelihoods in agriculture sectors, for example, in deltas .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report