Worrying melting of Greenland Ice Sheet an 'extreme event'
Observers of the Greenland Ice Sheet were shocked last week when NASA released new images showing melting over 97 percent of its surface. The normal figure in summer is between 40 and 50 percent. The data was so surprising that NASA itself thought it was looking at some technical glitch with the equipment. WRS’s Pete Forster spoke about the finding to one of the world’s leading experts on the Greenland Ice Sheet, professor Konrad Steffen of the Federal Institute for Forest, Snow and Landscape research, who has been visiting Greenland every spring for more than two decades. (It’s important to note that during this period of July, the ice sheet began to melt on its surface but that now, the higher elevations are indeed frozen once more.):