Vaughan, if you believe the AMO can cause a 0.2 C difference in global temperatures and that is just a reflection of the transport of the AMOC then it stands to reason you would attribute something to a longer term speeding up of the AMOC as depicted in Lund 2006 reconstruction of Gulf stream transport. (judithcurry.com)
Environmentalist viewpoint — temperature increases caused by CO2 increases will cause tipping points where all sorts of bad things will happen such as gulf stream reversal. (climate-resistance.org)
The models with Gulf stream failure must have picked up this lack of cooling from the North? (realclimate.org)