How much longer is the melt expected to last, at least for this particular event?
While GFS (via cci-reanalyzer.org) has been rubbish at predicting the warm bits of the Arctic, it has been good about the cold bits (e.g. NE Canada and Greenland). So the current spike in melt area was mirrored by the GFS predictions.
Now GFS is saying that this spike may have passed though peripheral areas of Greenland will be above zero for the next few days. Melt yes, how much
Thomas Barlow poined out that :-
The NAO has been so persistent the last several weeks that now at the start of the melt season, key areas of the Greenland ice sheet lower melt zone are protected from big melt by a cold layer of bright snow. - Jason Box
Compare the melt spike with the accumulatedsmb graph. It is still going strongly upwards, i.e. precipitation minus melt is still increasing the snow mass balance.