Friday March 27, 2009
New Species of Ice Invading Arctic
Julia Whitty
Mother Jones
A different kind of ice is replacing ancient Arctic ice. The new stuff is qualitatively different. It's thinner, darker, wetter. Worse, it may already be changing the local weather and the ability to grow new ice. It could even alter the oceanic circulation that mediates global climate, reports Nature. Oh, it's bad for polar bears too.
Until recently, the Arctic maintained a lot of multiyear sea ice that takes years to grow and thicken and survives from one year to the next. Some melts each summer. But only in small areas.
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