The arctic ice cap is suspended in water so when it melts annually the sea level is not affected. Only glacier that cover a land mass will raise sea levels. I read if the glaciers that cover Greenland melted completely then the sea level would rise 100 ft. There is a huge volume of water over Greenland.
Well, first consider this: 70.9% of this planet is covered in World Ocean which is approx. 139.7 MILLION square miles.....
The island of Greenland is only 836,300 square miles with approx. 660,000 square miles of permanent ice which varies from only a few meters thick at the perimeter (which is constantly melting and freezing by the way) to a few thousand feet at the center and deepest point of the ice mass which will likely never melt do the average extreme cold.
With that being said, there isn't enough ice on Greenland to even raise the oceans a couple of feet if it were to all melt......and that ain't ever going to happen.
Hmmm. Greenland...I wonder why they named it that...