Warm Arctic means colder, snowier winters in northeastern US, study says

phys.org | 3/13/2018 | Staff
melanie7 (Posted by) Level 3
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Scientists from Rutgers University-New Brunswick and Atmospheric and Environmental Research (AER) have linked the frequency of extreme winter weather in the United States to Arctic temperatures.

Their research was published today in Nature Communications.

Story - Couple - Years - Study - Co-author

"Basically, this confirms the story I've been telling for a couple of years now," said study co-author Jennifer Francis, research professor of marine and coastal sciences in Rutgers' School of Environmental and Biological Sciences. "Warm temperatures in the Arctic cause the jet stream to take these wild swings, and when it swings farther south, that causes cold air to reach farther south. These swings tend to hang around for awhile, so the weather we have in the eastern United States, whether it's cold or warm, tends to stay with us longer."

The research is timely given the extreme winter of 2017-2018, including record warm Arctic and low sea ice, record-breaking polar vortex disruption, record-breaking cold and disruptive snowfalls in the United States and Europe, severe "bomb cyclones" and costly nor'easters, said Judah Cohen, director of seasonal forecasting at AER and lead author of the study.

Study - Cohen - Francis - AER - Karl

In their study, Cohen, Francis and AER's Karl Pfeiffer found that severe winter weather is two to four times more likely in the eastern United States...
(Excerpt) Read more at: phys.org
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