SOURCE: The Guardian
DATE: December 12, 2017
SNIP: Permafrost in the Arctic is thawing faster than ever, according to a new US government report that also found Arctic seawater is warming and sea ice is melting at the fastest pace in 1,500 years.
The annual report released on Tuesday by the National Oceanic and Atmospheric Administration showed slightly less warming in many measurements than a record hot 2016. But scientists remain concerned because the far northern region is warming twice as fast as the rest of the globe and has reached a level of warming that’s unprecedented in modern times.
“2017 continued to show us we are on this deepening trend where the Arctic is a very different place than it was even a decade ago,” said Jeremy Mathis, head of NOAA’s Arctic research program and co-author of the 93-page report.
Preliminary reports from the US and Canada in 2017 showed permafrost temperatures are “again the warmest for all sites” measured in North America, said study co-author Vladimir Romanovsky, a professor at the University of Alaska in Fairbanks.