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Expanding Antarctic sea ice linked to natural variability

From the NATIONAL CENTER FOR ATMOSPHERIC RESEARCH/UNIVERSITY CORPORATION FOR ATMOSPHERIC RESEARCH BOULDER — The recent trend of increasing Antarctic sea ice extent — seemingly at odds with climate model projections — can largely be explained by a natural climate fluctuation, according to a new study led by the National Center for Atmospheric Research (NCAR). The…

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Why does the Antarctic sea ice trend resist decline?

From NSIDC: Antarctic sea ice: an update Antarctic sea ice extent continues to make headlines because it has grown even as much of the globe, and Antarctica itself, is warming. Arctic sea ice, in contrast, is showing a marked decline. Warmer air and ocean waters are bathing both poles, so why does the Antarctic sea…

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Warming ocean water undercuts Antarctic ice shelves

From the UNIVERSITY OF COLORADO AT BOULDER “Upside-down rivers” of warm ocean water threaten the stability of floating ice shelves in Antarctica, according to a new study led by researchers at the University of Colorado Boulder’s National Snow and Ice Data Center published today in Nature Geoscience. The study highlights how parts of Antarctica’s ice sheet…