Using satellites to measure sea surface height from 1995 to 2010, they found that the western Arctic's sea surface has risen by about 15 cms since 2002. The volume of fresh water has increased by at least 8,000 cubic km, or about 10 percent of all the fresh water in the Arctic Ocean. The fresh water comes from melting ice and river run-off.
If the wind changes direction, which happened between the mid-1980s to mid-1990s, the pool of fresh water could spill out into the rest of the Arctic Ocean and even into the north Atlantic Ocean, which could cool Europe by slowing down an ocean current coming from the Gulf Stream, which keeps Europe relatively mild compared with countries at similar latitudes.
Full report in NewsDaily.