So here’s the short version, but do go read the full one here:
It’s like this: The absence of heating over the past 17 years has heated up the previously cold surface waters who cooled down because of the previous warming. This newly heated (by the absence of heat) water then sinks beneath the cold water where it hides from our temperature sensors because… Because racist! Or maybe Gaia is just one really awesomely sneaky bitch, hiding warm water away from us by forcing it to ignore the laws of physics (heat rises, cold sinks, but that was probably something we learned because the Koch Bros. used to finance physics, so nevermind, DENIER!) and sink where it should rise.
We herewith Imperially decree that anybody not merely agreeing with, but even expressing doubts as to whether the glowbull wormeners are full of bovine cac, is to be considered too dumb to even talk with. Or to. Or to be in the vicinity of.