By Matt Owens April 16, 2013
Right about now - mid-April - is when the Greenland ice sheet starts its melt season. In recent years, it has begun slowly at this time, and then picked up steam, accelerating stronly from mid-May to late June.
Unusually high warmth along the west coast has been observed for the past 30 days:
This 30 day trend is actually a continuation of a much longer Arctic amplification that has been occurring for years now, as can clearly be seen in a 365 anomaly map (note the difference in scale magnitude however):
And finally, this is out just yesterday from the Yale Climate Forum on Greenland: