Web,
“That amount of energy is only impressive if it happened over a short period of time, which is the current situation.”
The change in surface temperature from the 1998 El nino to the 2000 recovery was about 0.26 degrees or ~2.5×10-22 Joules per year if you consider 1999 as the transition year. That was the excursion I mentioned after you estimated +/- 0.2 degrees