Dr. Zwally was a guest on MSNBC's Countdown, where he described the event in clear terms:
WASHINGTON (Reuters) – An ice island four times the size of Manhattan broke off from one of Greenland's two main glaciers, scientists said on Friday, in the biggest such event in the Arctic in nearly 50 years.
The ice island has an area of 100 square miles (260 square km) and a thickness up to half the height of the Empire State Building, said Andreas Muenchow, professor of ocean science and engineering at the University of Delaware. Muenchow said he had expected an ice chunk to break off from the Petermann Glacier, one of the two largest remaining ones in Greenland, because it had been growing in size for seven or eight years. But he did not expect it to be so large.
"The freshwater stored in this ice island could keep the Delaware or Hudson Rivers flowing for more than two years," said Muenchow, whose research in the area is supported by the National Science Foundation. "It could also keep all U.S. public tap water flowing for 120 days."
LABELS: CLIMATE CHANGE, ENVIRONMENT, GISS, GLOBAL WARMING, GREENLAND, JAY ZWALLY, NASA,PETERMANN GLACIER