May 19, 2005

Antarctica ice on the move

Nature.com reported on April 21 that 87 percent of 244 Antarctic glaciers have been retreating in the past 40 years. The likely cause is that the Antarctic Ocean temperature has risen 2 degrees C in the last 50 years. Link. A May 19 Nature.com article reported that scientists have also observed that the overall thickness of the ice layer in East Antarctica is increasing. They explain that the warmer oceans evaporate more moisture into the Antarctic air, which results in greater snowfall on the continent. The thickening of the ice layer has previously been predicted by global warming models. In time, the rate of glacier retreat will make up for the increase in Antarctic snow fall, and sea levels will slowly rise. Link.

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