The Greenland Ice Sheet (GRIS) has lost 20% more ice than previously thought, with an estimated 5,091 ± 72 km2 of ice lost, equivalent to 1,034 ± 120 gigatonnes of ice that has calved and melted away.

This ice loss could significantly increase global ocean levels and affect global ocean circulation, which could affect climate.

The study also highlights the importance of the process of calving of ice sheets, which is often overlooked in estimates of ice loss.