>I was informed today (Thanks, Tim.) that the NODC has updated its GLOBAL OCEAN HEAT CONTENT data. This is the dataset based on the Levitus et al (2009) paper “Global ocean heat content(1955-2008) in light of recent instrumentation problems”, Geophysical Research Letters. Refer to Manuscript.
The NODC has provided a detailed explanation of ocean heat content (OHC) data changes. As soon as the update is made available through the KNMI Climate Explorer, I will provide an update to the individual ocean basin subsets, similar to January To March 2010 NODC Ocean Heat Content (0-700m) Update And Comments, and a quick look into the effects of the other changes. (KNMI updates the Climate Explorer toward the end of the month.)
The following gif animation is based on the graph currently displayed on the NODC’s GLOBAL OCEAN HEAT CONTENT webpage and one that was displayed there on June 24, 2010. There are two noticeable changes to the data over the last decade. The upward shift in 2003 has been decreased, and the data no longer declines since then. In fact, the dip in 2005 should produce a positive trend if one were to plot the annual data since 2003. And overall, the rise since the beginning of the dataset appears to have declined.
Oct 2010 OHC Update