Dwindling Arctic Sea Ice May Affect Tropical Weather Patterns
A new study finds a possible link between Arctic warming and more frequent El Niños in the Central Pacific.
By Bob Berwyn, InsideClimate News
Jan 27, 2020
https://insideclimatenews.org/news/26012020/arctic-sea-ice-melting-tropical-weather-el-nino-climate-change"Kennel said it appears the sea ice decline passed a threshold with global consequences about 20 years ago.
"Sea ice reached a kind of tipping point around 1999," he said. "Before that, the seasonal melting from June to October was about the same size (each year). After that, it was much bigger."
"Francis, who was one of the first to propose that declining Arctic sea ice could intensify storm and drought extremes in the mid-latitudes, said that "interestingly, the Arctic connection was weak or non-existent during years before sea ice had declined substantially."
She added, "These authors present multiple lines of evidence that all fit the story that, when it comes to influences on mid-latitude weather, the tropics are no longer the only game in town."
Francis said another recent paper found different types of links between Arctic sea ice and the tropics. In the 2019 report in the journal Nature, the researchers wrote that extensive sea ice around Greenland and the Barents Sea favors El Niño conditions the following winter. "
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""If this is true, it would mean that the impacts of Arctic sea-ice loss could literally affect the entire planet," she said. "Arctic sea ice melt is by no means only a polar bear problem." "