Snowline on the Move (IMAGE) Brown University Caption Satellite images revealed substantial movement of the snowline on Greenland's ice sheet from season to season and year to year. That movement is a key component that controls the pace of melting on the ice sheet. Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.