Most coastal ecosystems  are affected by changes in relative sea level . Regional rates of RSL rise differ from the global mean due to a range of factors, including local subsidence driven by anthropogenic activities such as groundwater and hydrocarbon extraction . In many deltaic regions, anthropogenic subsidence is currently the dominant driver of RSL rise . RSL rise is driving a global increase in the frequency of extreme sea levels  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report