In this post, I include other sources of man-made heat to calculate a world heat budget, comparing the quantity of man-made heat with the quantity of heat observed entering the oceans, atmosphere and melting ice.
Figure 4. Ocean Temperature 0 -- 100 meters, NOAA
This raises a number of questions. First, is the measurement of ocean heat content correct? The quality and sensitivity of the ARGO system would suggest that the numbers are good since 2004. Second, are the calculations for man-made heat correct? These numbers contain many assumptions, and are more likely to be uncertain than the ocean heat content. Or third, was there another heat sink functioning in prior years, which is no longer working? This seems unlikely. Rather, the effort to align the sources and sinks in the earth's heat budget should focus on better quantifying of the sources of man-made heat.