Global sea-levels rose by an average of about three millimeters ( mm a year over the end of the century . Scientists say sea-level rises are the result of the expansion of water due to rising temperatures , melting of glaciers and the melting of polar ice sheets . Most accurate data yet based on satellite data from ESA . Sea-level rises uneven around the world with Pacific islands region hit worst . Philippines one of many cities upgrading flood protection barriers .
Global sea-levels rose by an average of about three millimeters ( mm a year over the end of the century . Most accurate data yet based on satellite data from ESA . Sea-level rises uneven around the world with Pacific islands region hit worst . Philippines one of many cities upgrading flood protection barriers .