Both of these effects are due to warming. Because the...
Both of these effects are due to warming. Because the atmosphere is warmer, it holds more moisture, so you get more snow. But because it's warmer, the edges of the ice are breaking up.
Both of these effects are due to warming. Because the atmosphere is warmer, it holds more moisture, so you get more snow. But because it's warmer, the edges of the ice are breaking up.