Antarctica currently has the most sea ice ever recorded for the date, which is 17,000 Manhattans larger than the greatest amount of sea ice ever recorded in the Arctic. Most geographers actually consider the southern hemisphere to be part of the globe.
In 2007, Wadhams made the identical prediction for 2012/2013. Perhaps he is facing the final collapse of his funding?
Since I started writing this post, six new Manhattans of ice have formed in the Arctic.