How does one ocean get “warming”?
There are cycles in nature that work at different wavelengths that can vary quite a bit and they can be out of phase with each other occasionally. The PDO and AMO are decadal and their oscillations work over periods of decades or years. El Nino and La Nina work over periods of months or weeks. The PDO has been in cold phase for awhile, while the AMO has been in warm phase. Bastardi is predicting a shift to cool phase for the AMO soon. And obviously one of the ways to cool surface water is for a faster wind to flow over the water.
Other then that, they estimate their are a million undersea volcanic eruption points. Who knows what periods volcanic activity cycles can operate on and if they can be slightly out of phase globally. But in a nut shell, apes are clueless. Always have been, always will be.