GLOBAL sea levels could rise two to three times higher over the next century than previously estimated.
The startling forecast is part of a study released today by the US National Research Council.
A committee of experts evaluated the latest UN estimates and updated them with new data on polar ice-cap melting that is believed to be speeding up sea level rise around the world.
By 2100, the NRC estimates that global sea levels will rise between 50 and 140 centimetres.
The UN Intergovernmental Panel on Climate Change’s projection in 2007 had predicted a fraction of that, at 18-59 centimetres worldwide.