That’s how much warmer than ‘normal’ the entire region of the Arctic above the 66 degree North Latitude Line was earlier today. Areas within this large warm pool saw temperatures spike to a range of 15 to 25 C warmer than the already warmer than normal 1981-2010 base period. And broad regions saw temperature between 10 and 20 C above that 30-year average.
(The entire Arctic is an incredible 5.5 C warmer than normal today. Meanwhile, Arctic sea ice extent has plunged, once-more, into record low ranges. Image source: Climate Reanalyzer.)