... is hardly happening this year. After the gigantic record melt of 2012, many expected that such spectacular melts would become the new norm - but it hasn't happened - yet anyway. 2013 was the largest minimum ice area since 2005 (though still less than anything earlier) and 2014 is currently tracking well above it. No doubt the denialist crowd will find this yet another "proof" that science is nuts, but the fact is that weather remains variable, on a year to year and even decade to decade scale.
the culprit - if you can call it that - this year has been cloud cover, high pressure, and wind pattern that have favored ice compaction rather than export.
Of course we still have six weeks left in the melt season, so the final script isn't yet in. Meanwhile, Antarctic ice is at record levels, for essentially unrelated reasons.