In the 2004 eco-disaster film The Day After Tomorrow, Europe and North America are gripped by a deep freeze after global warming halts the circulation of a North Atlantic ocean current. The film is pure Hollywood hyperbole.

But some scientists say the current is vulnerable to rising temperatures.

Acting like a conveyor belt, the current transports warm, surface waters toward the Poles and cold, deep waters toward the Equator.

In the Atlantic Ocean, these warm surface waters push northward, releasing heat into the atmosphere and becoming cooler and denser. As they do, the waters sink and flow southward in the deep ocean.

"The Atlantic circulation moves heat toward the Arctic, and this helps moderate wintertime temperatures in the high-latitude Northern Hemisphere," said Ruth Curry, a physical oceanography research specialist at the Woods Hole Oceanographic Institution on Cape Cod, Massachusetts.
Global Warming May Alter Atlantic Currents, Study Says

I watched a special regarding this. They said that due to the fresh water being dumped into the Atlantic Ocean the effects would actually drive us into another ice age.

I would imagine that they all have their own theories.

Have a good one!:jointsmile: