During the winter, the melting Arctic is like opening the refrigerator door . . .
The refrigerator gets warmer, and the room (the lower latitudes) get colder.
The cold winters of late might be a climate change rather than random variability. The explanation would be the weakening of the cyclonic winds that keep the extreme cold penned into the high latitudes.
Cold Jumps Arctic ‘Fence,’ Stoking Winter’s Fury. By Justin Gillis. New York Times.