Thickest parts of Arctic ice cap melting faster: NASA (with pics)
Source: Nunatsiaq News
Looking at these two NASA images from 1980 and 2012 shows just how much ice coverage the Arctic Ocean has lost over the past 30 years.
And, now, a new NASA study has found that the oldest and thickest Arctic sea ice is disappearing at a faster rate than the younger and thinner ice at the edges of the Arctic Ocean’s floating ice cap.
... The rapid disappearance of older ice makes Arctic sea ice even more vulnerable to further ice loss in the summer, said Joey Comiso, senior scientist at NASA Goddard Space Flight Center, and author of the study, recently published in the Journal of Climate.
... “The average thickness of the Arctic sea ice cover is declining because it is rapidly losing its thick component, the multi-year ice. At the same time, the surface temperature in the Arctic is going up, which results in a shorter ice-forming season,” Comiso said in a Feb. 29 NASA news release. “It would take a persistent cold spell for most multi-year sea ice and other ice types to grow thick enough in the winter to survive the summer melt season and reverse the trend.”
Read more: http://www.nunatsiaqonline.ca/stories/article/65674thickest_parts_of_arctic_ice_cap_melting_faster_nasa/
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