For Arctic, 2017 2nd-Warmest Year On Record, Lowest Winter Ice Extent On Record
The Arctic region experienced its second-warmest year (by air temperature) and its lowest winter sea ice extent on record in 2017, according to the 12th edition of NOAA’s Arctic Report Card. The peer-reviewed report — comprising the work of 85 different researchers from 12 different countries — also revealed that the Arctic is continuing to warm at a rate roughly or greater than twice that of most of the rest of the world.
The only year where land temperatures in the region were hotter than in 2017 was 2016 — air temperatures in the region were on average a good 2.9° Fahrenheit (1.6° Celsius) higher during 2017 than the 1981–2010 average for the region.
As noted above, the region also experienced its lowest ever (since modern record keeping began, that is) winter sea ice extent — with the maximum during March 2017 being substantially more limited than during any years on record. 2017’s maximum sea ice extent represents the 8th lowest on record — with almost all of those ahead of 2017 being post-2000 years.
Overlapping all of that, Arctic sea ice is continuing to get thinner and younger by the year — with multi-year sea ice now representing just 21% of total extent, down from 45% in 1985.
EDIT
https://cleantechnica.com/2017/12/20/arctic-experienced-2nd-warmest-year-lowest-winter-sea-ice-extent-record-2017/