Around its edge zone, and from glacier top to ice shelf bottom, Antarctica is melting. Above-freezing surface temperatures during the austral summer of 2016-2017 have resulted in the formation of numerous surface-melt ponds around the Antarctic perimeter. Large cracks grow through Antarctic ice shelves as warmer ocean currents melt the towering glaciers from below. The overall picture is of a critical frozen region undergoing rapid change due to the human-forced heating of our world — a warming that has brought Antarctica to a tipping point, for such fundamental alterations to Antarctic ice are now likely to bring about a quickening rate of sea-level rise the world over.
Surface Melt Visible From Satellite
During 2016-2017, Antarctic surface temperatures ranged between 0.5 and 1 degree Celsius above the already warmer-than-normal 1979 to 2000 average for most of Southern Hemisphere summer. While these departures for this enormous frozen continent may not sound like…
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