There also was a discussion (p 11) of the uncertainty of ocean heat flux data being 10 - 20 % (or 20 W / m2) versus the change in global heat flux due to AGW since 1900 being less that 2 W / m2 (a factor of 10 less). (skepticalscience.com)
The ice melting from ocean heat flux decreases faster than the ice growth does in the weakly stratified Southern Ocean, leading to an increase in the net ice production and hence an increase in ice mass.» (co2coalition.org)
Dozens of autonomous buoys deployed on the sea ice as far as 20 kilometers away from the vessel measured the growth and melting of sea ice to give indications of ocean heat flux on a larger scale. (eos.org)