Arctic Roots of Increasing Extreme Weather


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 26 September 2018

ECO-CRASHING NEWS

Arctic Warming Increasing Extreme Weather

More persistent weather patterns in US linked to Arctic warming,
Rutgers University, September 26, 2018.

MAIN POINTS

“Persistent weather conditions, including dry and wet spells, generally have increased in the United States, perhaps due to rapid Arctic warming.”

“Persistent weather conditions can lead to weather extremes such as drought, heat waves, prolonged cold and storms that can cost millions of dollars in damage and disrupt societies and ecosystems, the study says.”

“Overall, dry and wet spells lasting four or more days occurred more frequently in recent decades”

“The frequency of persistent large-scale circulation patterns over North America also increased when the Arctic was abnormally warm.”

“In recent decades, the Arctic has been warming at least twice as fast as the global average temperature, the study notes. The persistence of warm Arctic patterns has also increased, suggesting that long-duration weather conditions will occur more often as rapid Arctic warming continues.”

Warmer Arctic, More Extreme Weather
“The results suggest that as the Arctic continues to warm and melt, it’s likely that long-duration events will continue to occur more often, meaning that weather patterns – heat waves, droughts, cold spells and stormy conditions – will likely become more persistent.”

“When these conditions last a long time, they can become extreme events, as we've seen so often in recent years.”

 

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