Boulder, Colo. (AP) Researchers in Colorado say arctic sea ice is melting three times faster than many scientists project.
In a report, scientists at the National Center for Atmospheric
Research and the University of Colorado in Boulder concluded that Arctic sea ice has declined at an average rate of about 7.8 percent per decade between 1953 and 2006.
Eighteen computer models used by the United Nations sponsored Intergovernmental Panel on Climate Change had estimated a 2.5 percent decline in that time.
The Boulder-based researchers used reports from aircraft and ships, plus satellite measurements for their conclusions. They say their observations indicate computer models may have failed to portray the entire impact of rising levels of greenhouse gases.