Snowline on the Move (image) Brown University Share Print E-Mail 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 Share Print E-Mail 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.