Can someone help me figure ocean current patterns past and how they are affected today by global warming?

Question

Can someone help me figure ocean current patterns past and how they are affected today by global warming? I need academic material, but information that is clearly understood by an average college undergraduate. Specifically the Gulf Stream and Humboldt. With all honesty I don't understand this stuff at all.

Answer 1

as seen on tv - so take what you will -

As the Earth warms and the polar caps begin to melt -

more fresh water is placed in the ocean which changes the ocean currents which changes the global climate.  

The change in the ocean current created a mini ice age in the 1700's and changed history (caused by a volcano eruption in the Philippines.

My take away was that the Earth is self correcting.