Arctic sea ice is rapidly recovering from its lows in 2007 and 2012. The reason the lows occurred was because starting in 1988, winter winds were blowing a lot a sea ice out into the North Atlantic, where it melted. The loss of thick multi-year ice led to large summer melts.
But since 2011 the winter winds have changed, and there has been a large increase in the amount of thick multi-year ice. This ice is harder to melt in summer, and has led to the higher summer minimums seen in recent years.
It has nothing to do with “global warming” and never did.