Rapid Arctic warming since 2000 may be reshaping and rerouting the narrow current of high winds across the Northern Hemisphere known as the jet stream, forcing it to act like a giant stop light at 30,000 feet.
This leads to stalled and prolonged weather systems that can bring deadly extreme heat and rainfall events, a new study has found.
The study, published Monday in the journal Proceedings of the National Academy of Sciences, is the latest in a wave of research focused on the potential ties between melting sea ice and skyrocketing air temperatures throughout the Arctic, and extreme weather events in the northern midlatitudes, including the U.S., Europe and Asia.
The study adds to growing evidence that manmade global warming may already be reshaping today's weather patterns in ways that favor dangerous storms.
http://mashable.com/2014/08/11/warming-arctic-causing-deadly-extreme-weather-events/
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