While world media have been distracted by cold temperatures in Europe (December averages in the U.K. were 5.2°C [9.4°F] below normal), a vast pocket over northeastern Canada has been hitting heights that were not just unprecedented but, until this year, unimaginable.
As Bob Henson reports at the NCAR & UCAR Currents, the Canadian low Arctic has been unseasonably, unreasonably balmy, with the largest anomaly rising to 21°C [37.8°F] above normal. Hudson Bay and the waters around Baffin Island remained open well beyond usual, suggesting that the risk for an extraordinarily low summer ice season is built into the works. (If you look at this map, from Bremen University, you see that even the North Pole was unconvincingly frozen by Jan. 11 of this year.)
Henson looks particularly at the community of Coral Harbour, on the northwest corner of Hudson Bay in Nunavut, where typical January temperatures range from a bone-chilling low of –34°C (–29.2°F) to teeth-chattering “high” of -26°C (–14.8°F). This year, Environment Canada reported that in the first 12 days: