[SPUGGIE J]

Originally Posted by Billcat

Hi Willow,

Two things that drive the Gulf Stream circulation. The first, of course, is the enormous amount of solar energy captured by the tropical areas of the ocean. However, as the stream cools, the salinity of the water causes it to sink in the northern seas, where there is essentially a cold return current. As this cold current runs deep in the ocean, it does not cause a lot of cooling to land masses. The concern is that the fresh water ice melt from the Arctic will interfere with and possibly stop the sinking of the water, messing up the return flow, effectively shutting the Gulf Stream down.

Hs it not shut down at least once before thanks to an out spill of fresh water from Canada?