Steffen Olsen, an Arctic researcher with the Danish Meteorological Institute, and dogs set out to retrieve oceanographic moorings and a weather station over meltwater topping sea ice in northwest Greenland on Thursday. (Steffen Olsen) Ice is melting in unprecedented ways as summer approaches in the Arctic. In recent days, observations have revealed a record-challenging melt event over the Greenland ice sheet, while the extent of ice over the Arctic Ocean has never been this low in mid-June during the age of weather satellites. Greenland saw temperatures soar up to 40 degrees above normal Wednesday, while open water exists in places north of Alaska where it seldom, if ever, has in recent times. It’s “another series of extreme events consistent with the long-term trend of a warming, changing Arctic,” said Zachary Labe, a climate researcher at the University of California at Irvine. And the abnormal warmth and melting of ice […]