samedi 2 janvier 2016

temperatures-spike-almost-50-degrees-in-north-pole

Temperatures spike almost 50 degrees in North Pole

By [173]Michael Casey
Published January 01, 2016
[174]FoxNews.com
[175]Facebook0 [176]Twitter0 [177]livefyre [178]Email [179]Print
Arctic sea ice reached its fourth-lowest extent on record on Sept. 11,
2015.

Arctic sea ice reached its fourth-lowest extent on record on Sept. 11,
2015. (Dan Pisut, NSIDC, NOAA Climate.gov)

There has been a heat wave of sorts in the North Pole this week that
might even have Santa trading in his sleigh for swim trunks.

Temperatures were as much as 50 degrees above average on Wednesdayâ€"
almost reaching 32 degrees Fahrenheit in portions of the Arctic Circle
that average 20 below zero at this time of year.

Meteorologists and experts at the National Oceanic and Atmospheric
Administration blame the strange weather on winter cyclones over the
Atlantic near Iceland that pushed warm air far up from the south.
Another storm in the Arctic north of Greenland - helped by low-pressure
system that also produced blizzards in New Mexico, tornadoes in Texas
and flooding in Missouri - was also to blame.

“A series of cyclones lined up over the Arctic and North Pole to
Iceland (where Cyclone Frank crossed),” Ryan Maue, a meteorologist for
WeatherBell a private weather forecasting company based in NYC, told
FoxNews.com by email.

Related: [180]Arctic sea ice shrinks to historic low

“The combined flow at all levels of atmosphere was directed from the
Atlantic over the Arctic and into Siberia,” he said. “Thus, warmer and
moister marine air from Atlantic traveled over the Pole and raised
temps to near or at freezing for a few hours. However, the warm
advection event was short lived and temps are closer to normal well
below 0.”

Hope you enjoyed the North Pole heat-wave -- now back to normal
programming down to -25°F ... warm up next week
[181]pic.twitter.com/HGPygsAiUt
â€" Ryan Maue (@RyanMaue) [182]December 30, 2015

James Overland, an Arctic climate researcher at NOAA’s research lab in
Seattle, said it was the two storms together that really caused the
freak weather.

“If you think of those two storm centers as kind of a dumbbell with the
winds blowing around them, it brought all that warm air up from the
Atlantic to near the North Pole,” he told FoxNews.com “One of the buoys
shows slightly above freezing on Wednesday.”

Storms like this are typical in the Arctic for this time of year but
such temperature swings are more unusual â€" about once in five years.
Forecasters were careful not to single out any one cause for the
strange weather such as El Nino or climate change, suggesting it’s a
combination of factors that caused the temperature spike.

Source .... : http://www.foxnews.com/science/2016/01/01/temperatures-spike-almost-50-degrees-in-north-pole.html
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