The South Pole warmed three times faster than the global rate, partly connected to naturally rising temperatures, the rest, the researchers said, was due to human-driven climate change
So fast, in fact, that Kyle Clem and other climate researchers began to worry and wonder whether human-driven climate change was playing a bigger role than expected in Antarctica.
Clem and his colleagues wanted to explain why the icy continent began warming rapidly after a period of cooling during the 1970s and ‘80s: was it natural variability? Or was it part of the wider trend of global warming caused by human industrial activity?The South Pole warming is partly connected to naturally rising temperatures in the tropical western Pacific being propelled southward by cyclones in the icy waters of the Weddell Sea, off the Antarctic peninsula.
“The end result is a massive warming,” Clem said, though he acknowledged that it’s difficult to determine exactly how much each factor played a part. With temperature records for the South Pole dating back only about 60 years, the region’s climate is little understood.Scientists have known that Pacific weather systems can influence the western Antarctic and the Antarctic peninsula, where rising air and water temperatures already are causing ice to melt.
France Dernières Nouvelles, France Actualités
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