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Cold snap caused by climate change-weakened jet stream, scientists suggest

2014-11-20 21:28:00| Climate Ark Climate Change & Global Warming Newsfeed

Al Jazeera: Arctic conditions in eastern United States this week may have been the result of climate change-induced stressors on the jet stream that regulates weather over the northern hemisphere, according to meteorologists. Residents in a large swath of the country's east have been met with sub-freezing temperatures over the past week. And overnight Wednesday, more than 5 feet of snow descended on parts of western New York state. Media have referred to the strange weather pattern as the Polar Vortex and...

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Curvy Jet Stream Creates Winter Weather Extremes in North America

2014-04-16 18:32:00| Climate Ark Climate Change & Global Warming Newsfeed

Nature World: Last winter was a rough one for many North Americans, with polar vortexes bringing Arctic temperatures as far south as Florida. Meanwhile, residents on the continent's west enjoyed a relatively mild winter. According to new research this weather pattern, brought on by a "curvy" jet stream, has become more pronounced in the last 4,000 years and may become more so as the climate gets warmer. Writing in the journal Nature Communications, a team of scientists including University of Utah geochemist...

Tags: north america winter weather

 
 

UK weather: changing jet stream linked to flooding crisis

2014-02-17 12:12:00| Climate Ark Climate Change & Global Warming Newsfeed

Blue and Green: The system of winds that is responsible for bringing weather to Northern Europe and North America may be changing, new research has found. A study suggests that the jet stream, a high-speed air current that carries weather around the globe, is taking a longer, more meandering route than usual. This means that weather patterns will remain the same in some areas for longer periods. If accurate, these findings could explain the recent stormy spell that has brought devastating flooding to many...

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Warming Arctic May Be Causing Jet Stream Lose Its Way

2014-02-16 16:12:00| Climate Ark Climate Change & Global Warming Newsfeed

National Public Radio: Mark Twain once said: "If you don't like the weather in New England now, just wait a few minutes." He was making an unknowing reference to the jet stream, which drives the weather over North America and Europe like a high-altitude conveyor belt. But increasingly, the jet stream is taking a more circuitous route over the northern latitudes, meaning weather systems hang around longer than they used to. And, a warming Arctic is probably to blame, says Jennifer Francis, a professor at Rutgers University's...

Tags: way lose stream warming

 

Jet stream 'may be changing'

2014-02-15 20:33:00| Climate Ark Climate Change & Global Warming Newsfeed

BBC: New research suggests that the main system that helps determine the weather over Northern Europe and North America may be changing. The study shows that the so-called jet stream has increasingly taken a longer, meandering path. This has resulted in weather remaining the same for more prolonged periods. The work was presented at the annual meeting of the American Association for the Advancement of Science (AAAS) in Chicago. The observation could be as a result of the recent warming of the Arctic....

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