US: The Arctic sea ice has reached the sixth lowest extent of the satellite record and is 432,000 square miles (1.12 million square kilometres) lower than the 1981-2010 average.
The NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado have reported that the Arctic sea ice reached its annual minimum summer extent for 2013 on September 13. Analysis of satellite data by NSIDC and NASA showed that the sea ice extent shrunk to 1.97 million square miles (5.10 million square kilometres). “I was expecting that this year would be higher than last year,” said Walt Meier, a glaciologist at NASA”s Goddard Space Flight Center in Greenbelt, Md. “There is always a tendency to have an uptick after an extreme low; in our satellite data, the Arctic sea ice has never set record low minimums in consecutive years.”