I think I'll just ignore posting that the real science shows that the Earth is always in cycles of cold to warm and back and that we're reaching the top of one of the warm cycles soon. Next up: Another ice age. Yay.
Once the oceans warm up to a certain temperature, the flow between the Artic and Atlantic (at least) ends and both turn very cold.
Oh, and all of this would have happened regardless of anything humans have done. Some of the volcanic eruptions in history have put far more crud into the atmosphere than all of the industrial age! Sure, we're not helping things, but Nature doesn't care about political agendas.