At 1.7 million square km (656,000 square miles), up to 3 km (nearly two miles) thick and a little smaller than Mexico, the Greenland Ice Sheet would raise global sea level by about 7 meters (22 feet) if it melted completely. |
The implications are global. We are not talking about walking along the sea front on a nice summer day, we are talking of the worst storm settings, the biggest storm surges . . . you are upping the probability major storms will take place. |
This change, combined with increased melting, suggests that existing estimates of future sea level rise are too low. |