This is exciting, since I can get away from the philosophers for a while. The big physics question is: How can the Pacific act as the heat engine for the world? When it is on full blast, we are warm. When it is dead, we are cold.
The answer lies in the linked vortexes along the belt. Right now, they are starting in the east, and we have the question of whether they will continue to grow. I am suspecting a series of oscillations, where they grow partway and then collapse. We don't have the detail of the 70's cold, but this could be the mechanism for the 20 year cold cycles. The 300 year cycle (Little Ice Age) could be that the ocean totally turns off.
We know all about single hurricanes because they put a lot of effort into the ones hitting the US. It is a giant heat vent, taking the heat from the ocean, practically boiling the water with low pressure, and then venting to the upper atmosphere. If we have a lot of Atlantic hurricanes, then it affects the northern temperature.
However, the embedded, linked vortexes must have a different mechanism, since they appear to bring in extra heat from the solar flux. That would be fantastic physics, but we won't see it in my lifetime. All physics must support the philosophy, and there cannot be any surprises.