[lisowski]

You should really watch the special Vice HBO did on the current situation.

You're citing the levels of sea ice, which are at an all time high right now. But the sea ice is only around a meter thick max! Land ice on the other hand is far deeper, therefore containing more water. Sea ice form quickly, like on a lake during winter. Land ice is a lot thicker and harder to form, and we are losing that in Germany size chunks.