SEA LEVEL RISE
Perhaps the most critical portion of the world's ocean circulation exists near Greenland, where warm surface currents are super cooled, transferring heat to Western Europe. This cold water forms a bottom current which begins a two and a half year journey that ends in the central Pacific. Excessive melt water from warming Greenland glaciers has interfered with this process by reducing salinity.
The astounding rate of glacial melting in Greenland. The "freshening" of this zone of the North Atlantic Ocean has been correlated to changes in THC. If the THC was reduced by glacial melt, less heat would be transported north.