You are right, it's not losing mass through melting.
But it is losing mass when iceberg calving is accounted for.
"Over the year, it snows more than it melts, but calving of icebergs also adds to the total mass budget of the ice sheet. Satellite observations over the last decade show that the ice sheet is not in balance. The calving loss is greater than the gain from surface mass balance, and Greenland is losing mass at about 200 Gt/yr."
Edit: And i thought this article on the scale of a gigaton of water was interesting as well:
But it is losing mass when iceberg calving is accounted for.
"Over the year, it snows more than it melts, but calving of icebergs also adds to the total mass budget of the ice sheet. Satellite observations over the last decade show that the ice sheet is not in balance. The calving loss is greater than the gain from surface mass balance, and Greenland is losing mass at about 200 Gt/yr."
Edit: And i thought this article on the scale of a gigaton of water was interesting as well:
https://www.washingtonpost.com/news/energy-environment/wp/20...