Daily mean temperatures remained well above normal throughout January, and the 19-station mean has pushed back up to nearly +10°C in recent days (see the chart below). The chart also shows a recent spike up to nearly +30°C in the red line, which shows the warmest of the individual stations on any given day. This spike reflects extraordinary warmth a week ago at Cape Billings on the northern coast of Chukotka (176°E); the temperature reached
The continued drumbeat of extreme warmth in the Arctic is of course reflected in sluggish growth of sea ice and record low sea ice extent for the time of year, according to the NSIDC's recent update. January's update from the University of Washington's PIOMAS model indicates that Arctic sea ice volume is likely also at record lows and well below anything observed on this date even in recent warm winters.