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Arctic Heat Is Becoming More Common and Persistent

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By July 13 2017  see full Climate Central article here

..in the latest sign of how quickly changes are happening, new research published this week shows that the Arctic has seen more frequent bouts of warm air and longer stretches of mild weather.  The new findings show that while warm snaps have occurred even as far as back as the 1890s, a massive shift is afoot in the region, which is warming twice as fast as the rest of the world

Background temperatures have also been rising faster there. The North Pole region has warmed 2.3°F (1.3°C) per decade since 1979, a trend largely driven by climate change. Though the new study doesn’t tease out whether the increase in warm days is due directly to climate change, it’s part of a huge pile of evidence of how rising carbon pollution is altering the Arctic faster than the rest of the world….

From ScienceDaily article:

….The winter of 2015-2016, for example, saw temperatures nearly 3.6 degrees Fahrenheit (2 degrees Celsius) warmer than the previous record high monthly winter temperature. At the end of December 2015, scientists recorded a temperature of 36 degrees Fahrenheit (2.2 degrees Celsius) in the Central Arctic, the warmest temperature ever recorded in this region from December through March.

…On average, the Atlantic side of the North Pole now has ten warming events each winter, while the Pacific Central Arctic has five such events, according to the study. More storms come in to the Arctic from the Atlantic Ocean during winter, which results in more warming events on the Atlantic side of the North Pole….

Robert M. Graham, Lana Cohen, Alek A. Petty, Linette N. Boisvert, Annette Rinke, Stephen R. Hudson, Marcel Nicolaus, Mats A. Granskog. Increasing frequency and duration of Arctic winter warming events. Geophysical Research Letters, 2017; DOI: 10.1002/2017GL073395

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