A consortium of research institutes released an assessment showing accelerated mass loss from key ice sheets. The authors compared altimetry, gravimetry, and in-situ measurements collected since 2015.
They stress that regional variation remains large and that some glaciers have stabilised. The report's central finding is that planning documents still using older loss rates understate coastal risk in the second half of the century.
Policy teams in several capitals said they would review flood maps, not rewrite them overnight.