The sun won’t rise at the North Pole until March 20, and it’s normally close to the coldest time of year, but an extraordinary and possibly historic thaw swelled over the tip of the planet this weekend. Analyses show that the temperature warmed to the melting point as an enormous storm pumped an intense pulse of heat through the Greenland Sea.
https://www.msn.com/en-us/weather/to...cid=spartandhp

From the previously mentioned blogsite -
This probably has a lot to do with the splitting of the Polar Vortex due to a sudden stratospheric warming event a while back. I'm grateful for a bit of winter, finally, in my neck of the European woods, but not too happy about the consequences for the Arctic. The cause of all this heat and ice being pushed away from the northern coast of Greenland is an atmospheric set-up that during summer we'd be referring to as a Reverse Dipole (low pressure over the Canadian side of the Arctic, high pressure over the Siberian side).
http://neven1.typepad.com/blog/2018/02/index.html