Kejad Better late than never i hope.
Yes as I recall at one point there were 12 bands on the companion anomolies page to the pic Lodger posted, implying 24deg, too much for insolation or any other cause, except for kinetic energy
https://pangea.stanford.edu/courses/EESS146Bweb/Lecture%2015.pdfhttp://www.o3d.org/abracco/pio2011.pdfare a couple of places to check for a start but you'll find any number by googling "kinetic energy greenland". Which address a similar anomoly on the west coast of greenland. Although i haven't found anything specifically for the arctic.
Insofar as i understand it the kinetic energy, which i believe comes in on the back of tidal flows from the pacific, forms votices which act as centrifuges which, apart from the thermal energy that generates, draws up heat from the warmer AW strata below, and sheds it in front of the waves so that it sort of surfs towards the shore and thus concentrates. I based my Jan 21 comment on 2013 open thread 1#, in another place on my incomplete understanding,
"I'm expecting the same kind of warming we saw in Mackenzie Bay to show up to the north of greenland before the solstice, and possibly in april, which will disconnect the ice from the coast, and then the ice will rotate clockwise and disappear via Fram."
and having just read this whole thread, feel fairly confident that
this has been an increasingly potent factor in the demise of the ice since 2007, largely melting it out from the bottom.