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Meteorologists blame freak Arctic weather phenomenon for US snowstorms

Posted By admin On January 30, 2011 @ 6:58 am In Sci Tech | Comments Disabled

London Telegraph [1]
Jan 30, 2011

Meteorologists say a freak weather phenomenon over the Arctic is responsible for the storms which have dumped record amounts of snow on the United States East Coast this winter.

The phenomenon, known as the North Atlantic Oscillation, is pushing frigid winds from the North Pole across the Atlantic, where they are colliding with the warm, moisture-laden air over the southern US. Jet streams, a belt of winds aloft at about 18,000 feet, are then carrying the cold air north-west, where the moisture is falling as snow.

In normal winters, the air mass above the Arctic is surrounded by a circular vortex of wind currents – a kind of fence that keeps in the frigid polar air. This condition, which meteorologists call the North Atlantic Oscillation’s Positive Phase, ensures both sides of the Atlantic have relatively mild winters.

But for reasons experts do not fully understand, the North Atlantic Oscillation sometimes switches to a Negative Phase. High pressure develops over the Arctic, forcing cold air south into North America and Eurasia. Jeff Masters, a meteorologist, explains that the phenomenon is a little like “leaving the refrigerator door ajar – the refrigerator warms up, but all of the cold air spills out into the house.”

Full article here [1]

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[1] London Telegraph: http://www.telegraph.co.uk/news/worldnews/northamerica/usa/8286069/Meteorologists-blame-freak-Arctic-weather-phenomenon-for-US-snowstorms.html

[2] Stock up with Fresh Food that lasts with eFoodsDirect (AD): http://www.efoodsdirect.com/

[3] Image: http://purewaterfreedom.com/

[4] Arctic ice recovers from the great melt: http://www.prisonplanet.com/arctic-ice-recovers-from-the-great-melt.html

[5] ‘Blame The Weather’ As UK Heads For Unprecedented Triple-Dip-Recession: http://www.prisonplanet.com/blame-the-weather-as-uk-heads-for-unprecedented-triple-dip-recession.html

[6] Arctic ice refreezing after falling short of 2007 record: http://www.prisonplanet.com/arctic-ice-refreezing-after-falling-short-of-2007-record.html

[7] 13,000 Year Study Reveals Severe Weather Associated With Natural Solar & Ocean Oscillations, Not CO2: http://www.prisonplanet.com/13000-year-study-reveals-severe-weather-associated-with-natural-solar-ocean-oscillations-not-co2.html

[8] Arctic Sea Ice Melting Season Posts Latest Start on Record: http://www.prisonplanet.com/arctic-sea-ice-melting-season-posts-latest-start-on-record.html

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