Satellite data for the first several weeks of 2013 is showing that melting is occurring in south east Greenland. In summer this would be expected, but January-February is the dead of winter. Some portions of Greenland have experienced more than 30 days of melting since the start of this year, a worrying trend.
According to email correspondence with Ted Scambos from National Snow and Ice Data Centre (NSIDC) sent to Tom Yulsman, all of Greenland has been 2 to 6 degrees C warmer than the 30 year mean. Tom quotes Ted Scambos on his blog: "Air temperatures along the southeastern coast for the period Feb 10 – 15 are running 2 to 6 C above normal. Nuuk, the capital, on the very southern west coast, is currently just a couple of degrees below freezing."
Related: Is Climate Change causing an exponential rate of Ice sheet Mass Loss, sea level rise? | Global Warming threshold for Greenland Ice Sheet collapse reduced to 1.6 degrees C