The atmosphere is not a vacuum, that said as CO2 accumulates in the atmosphere it traps heat, similar to a cloud cover. So things heat up forests, seas, lakes etc. Now with the temperature gradient changing in the west we have massive forest fire events due to pine bark beetles drought etc. As the ash is swept up to the higher latitudes it falls upon the northern ice caps creating a cover of dark ash that increases heating of the northern polar ice cap. So as ice melts sea levels rises and more heat and moisture gets trapped in the atmosphere. We get increasing destructive weather events fueled by higher temps.
I have no idea where Ray gets this global cooling phase or evidence from the science community verifying this event.