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Antarctic snowfall aint changed in last 50 years
25/Aug/2006: The most precise record of Antarctic snowfall ever generated shows there has been no real increase in precipitation over the southernmost continent in the past half-century, even though most computer models assessing global climate change call for an increase in Antarctic precipitation as atmospheric temperatures rise.
The findings also suggest thickening of Antarctica's massive ice sheets haven't reduced the slow-but-steady rise in global sea levels, as some climate-change critics have argued.
The study looked at both the West Antarctic Ice Sheet (WAIS), a marine ice sheet with a base below sea level, and the much thicker East Antarctic Ice Sheet (EAIS) that sits atop dry land.
In recent years, large volumes of ice along the WAIS coast have melted at a faster rate than previously seen.
Some observers have blamed global warming for the melting and for the increased calving of icebergs along the continent's margin.
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