This. The point of interest should had been why it warmed up so fast before, not why it falling down now to a bit closer to what used to be normal. Specially if

This. The point of interest should had been why it warmed up so fast before, not why it falling down now to a bit closer to what used to be normal. Specially if we are talking about limited regions of the ocean (not the whole ocean), with water circulation playing a role there.