New peer reviewed study by James Hansen of NASA / GISS measures recent ocean heat content and his data indicates insignificant warming - thus, oceans by year 2100 will not warm much
Read here. Willis Eschenbach does the number crunching on the Hansen et al 2011 analysis that earth has a serious energy imbalance, and this "imbalance" is represented by an ocean warming equivalent of 0.54 W/m2 of energy over the period of 2005 - 2010.
Now, +0.54 W/m2 sounds like a very serious energy imbalance indeed until one translates what that means in degrees Celsius of ocean warming, then projecting that "warming" out to year 2100. That is exactly what Willis's number crunching did and he discovered that based on Hansen's "serious" energy imbalance that oceans will warm by a laughable and by a barely measurable amount of:
+0.15C degree by 2100 AD
Adjacent, is an Excel representation of calculations done by Willis. (click to enlarge)