From NYT, a quote of researcher Jason Box:
Petermann [glacier] is a sleeping giant that is slowly awakening. Removing flow resistance leads to flow acceleration… The coincidence of this area loss and a 30 square kilometer loss in 2008 with abnormal warmth this year, the setting of increasing sea surface temperatures and sea ice decline are all part of a climate warming pattern.
Here’s the graphic from the article:
How big is this “ice island”? From Montreal Gazette:
The biggest Arctic “ice island” to form in nearly 50 years — a 250-square-kilometre behemoth described as four times the size of Manhattan — has been discovered after a Canadian scientist scanning satellite images of northwest Greenland spotted a giant break in the famed Petermann Glacier.