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The Arctic Is Shifting to a New Climate Because of Global Warming

The New York Times – Open water and rain, rather than ice and snow, are becoming typical of the region, a new study has found. “The Arctic is among the parts of the world most influenced by climate change, with sharply rising temperatures, thawing permafrost and other effects in addition to shrinking sea ice. The study, by Laura Landrum and Marika M. Holland of the National Center for Atmospheric Research in Boulder, Colo., is an effort to put what is occurring in the region in context. “Everybody knows the Arctic is changing,” said Dr. Landrum, a climate scientist and the lead author of the study, published in the journal Nature Climate Change. “We really wanted to quantify if this is a new climate.” In other words, she said, “has the Arctic changed so much and so fast that the new climate cannot be predicted from the recent past?”

Using years of observational data from the region and computer models, the researchers found that sea ice is already in a new climate, in effect: The extent of ice in recent years is consistently less than what would be expected in even the worst year for ice in the mid-20th century…”

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