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Navigation Primary Navigation Home Singapore Asia Pacific World Business Entertainment Sports Technology Secondary Navigation Top Stories Full Coverage Most Popular Photos Search Search: Antarctica feeling the heat too, says study AFP - Friday, October 31 PARIS (AFP) - - Antarctica, which seemed to have largely escaped the global warming affecting the rest of the planet, is melting too, according to a study. The new research, published in the journal Nature Geoscience, also provides the firmest proof to date that climate change at both poles is not the result of natural fluctuations. "Our results demonstrate that human activities have already caused significant warming in both polar regions," said Alexey Karpechko, a professor at the University of East Anglia and a co-author of the study released Thursday. Earlier investigations left no doubt that Earth's northern extremity has warmed at nearly twice the global average over the last century, causing a dramatic shrinking of sea ice and disrupting the region's ecosystems. "However in Antarctica, such detection was so far precluded by insufficient data," said Karpechko. The new study goes a long way toward filling that gap, and factoring out the causes. Using new data on land surface temperatures and state-of-the-art computer models to simulate different climate scenarios, a team of scientists led by East Anglia's Nathan Gillet were able to tease apart the internal and external drivers of observed changes at both poles. Rather than covering the entire Arctic and Antarctic regions, as previous studies have done, they focused only on the grid points where precise measurements have been taken. This made their climate models more accurate, and showed that observed changes in temperatures over the 20th century could only have occurred if the impact of industrial greenhouse gas emissions, and upper atmosphere ozone depletion, are taken into account. "Their work demonstrates convincingly what previous studies have suggested -- that humans have indeed contributed to warming in both the Arctic and Antarctic regions," said Andrew Monaghan of the US National Center for Atmospheric Research and David Bromwich, a researcher at Ohio State University, in a comment, also published in Nature Geoscience. Knowing the cause "of polar climate variability is critical for understanding how the ice sheets will evolve in the 21st century," they said. Email Story IM Story Printable View Blog This Recommend this article Average (0 votes) Sign in to recommend this article » Most Recommended Stories » Related Articles: Climate Change Antarctica feeling the heat too, says studyAFP - Friday, October 31 Shivering teacher tells class about climate changeAP - Friday, October 31 Prince Charles calls for joint effort to fight climate changeAFP - Thursday, October 30 Climate change fight 'hurt by cash crisis' says EUAP - Wednesday, October 29 Enlarge Photo File photo of an iceberg in North Bay, Rothera Point, Adelaide Island, Antarctica. Antarctica, which seemed to have largely escaped the global warming affecting the rest of the planet, is melting too, according to a study. Related Full Coverage climate change climate change All Full Coverage Most Popular – Top Stories Viewed When men see red, they see hot: study Asian stocks soar on US Fed rate cut McCain in defiance as Obama boosted by economic data World's fattest man weds friend's widow Desperate pleas end in despair as starlet's nephew found dead View Complete List » Search: Home Singapore Asia Pacific World Business Entertainment Sports Technology

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