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As we all know icebergs 9/10 part is under the sea level. Icebergs at North Pole are extremely huge above the sea level. Imagine how huge are those under the sea: 9 times bigger (look at the picture). Imagine how much water is displaced by these huge icebergs from the world oceans . When the ice melts the water displacement of the icebergs are much lower since they become smaller ergo the sea levels won't change because of ice melting. The climate will change because the sea streams direction will change in reply to the warming water, as well as the direction of winds. This changes are already here only we don't pay attention. Look around there are heavy rains and floods everywhere. We are sitting and do nothing like a toad in a boiling water. If a toad jumps into hot water it will jump out. If the toad is sitting in a continously melting water it will boil without any action. So is the behavior of humans in this situation. Only the bowl is our planet and even if we realize the changes if its too late we cannot jump out...

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Correct, but in the case of Greenland, the ice is not in the sea already, so whatever ice melts, it goes to the ocean. Additionally, the adbedo feedback occurs, where as soon as the lower surface of the ice shows up, absorbs more solar energy and melts even faster.

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