This may no longer matter. 
The arctic and greenland ice has been doing LOTS of melting and that freshwater appears to be stopping the AMOC. 
https://www.forbes.com/sites/trevornace/2017/08/03/global-ocean-circulation-appears-to-be-collapsing-due-to-a-warming-planet/#7d2e024df6f4

If this is so, then 1 of 2 things are VERY likely to happen. 
1) Global Warming will accelerate quickly. Up till now, AMOC has not really changed, and it is possible that it will not fully collapse. If so, and Arctic/Greenland warm up fast enough, then climate change will be accomplished and we will see 2-4C increase in global temps.
2) if AMOC is stopped and not just slowed, then no heat will be transported to the north. That will mean that arctic/greenland will restart a major freeze, while the equator heats up. Again, this will be looking at a downward 2-4C around here and north, while the equator will see 2-4C increase. 

Let the good times roll.