That's a really good question. Maybe we could pump it to a colder area of Antarctica? Or pump a corresponding amount of ocean water to a cold area of Antarctica.
I read an article about this a few weeks ago. Basically it's not possible because of the amount of energy required to pump the water. It's a HUUUUGE amount of water. Sea levels are rising 3mm/year, which is ... hmm
Surface area of Earth = 510 million km^2 = 5.10e14 m^2.
But the hoover dam just drops the water, what, a few hundred meters? We'd need to transport the water many km from the oceans to the middle of the antarctic continent, and lift it a couple km, to the tops of the glacier. So it's way more than 15 hoover dams.
Based on the down votes I have to assume some people think you can move a warm body mass to a colder region and that will have no effect on the temperature of that colder region.
Where does all the energy go if it does not go into raising the temperature?
The Gulf Stream does exactly what is suggestion, moving massive amounts of warm water north and it's effect on winter temperatures in Western Europe is massive.