Friday, April 3, 2009
According to a new report by Wang and Overland in Geophysical Research Letters, the arctic sea ice is melting fast enough that it will be largely gone within 30 years. The ice is melting so fast because arctic temperatures in the last four years have risen to a level (a 9 degree Fahrenheit increase) which was not expected to occur for another 60 years. The sea ice reflects sunlight so the planet will heat even faster as the ice melts. So....perhaps all of those changes that we were expecting in 2010 may be here by 2040, or earlier.
Common Dreams reports:
[Wang and Overland] expect the area covered by summer sea ice to decline from about 2.8 million square miles normally to 620,000 square miles within 30 years.Last year's summer minimum was 1.8 million square miles in September, second lowest only to 2007 which had a minimum of 1.65 million square miles...Arctic sea ice reached its winter maximum for this year at 5.8 million square miles on Feb. 28. That was 278,000 square miles below the 1979-2000 average making it the fifth lowest on record. The six lowest maximums since 1979 have all occurred in the last six years. Common Dreams Arctic Sea Ice