The blocking pattern we are in with the jet stream stuck far below us on the prairies is one of the scenarios that climate scientists have been observing as the temperature differential between the arctic and mid latitudes declines as the arctic warms faster than other parts of the world.
Global atmospheric blocking trends and climate change
A 2012 study identifies an eastward shift of blocking events over the North Atlantic (fewer cases of blocking over Greenland and more frequent blocking over the eastern North Atlantic) and the North Pacific.[2][7]
A 2013 study finds an increase in blocking duration year-round over the Northern Hemisphere since about 1990.[8]
An earlier study, from 2008, found a decrease in the overall frequency of blocking events in the Southern Hemisphere, but an increase in the intensity of events.[9]
Global studies attribute blocking trends to climate change
(Mann et al. 2017) show that an unusual, undulating, and persistent jet stream pattern, which has been associated with many of the most extreme, persistent weather events in recent years, including the 2003 European heatwave, the 2010 Moscow wildfires, the 2011 Texas and Oklahoma drought, and the 2016 Alberts wildfires, is becoming more common because of human-caused climate change, and in particular, because of amplified Arctic warming.[10][11]
http://www.climatesignals.org/climate-signals/atmospheric-blocking-increase
Global atmospheric blocking trends and climate change
A 2012 study identifies an eastward shift of blocking events over the North Atlantic (fewer cases of blocking over Greenland and more frequent blocking over the eastern North Atlantic) and the North Pacific.[2][7]
A 2013 study finds an increase in blocking duration year-round over the Northern Hemisphere since about 1990.[8]
An earlier study, from 2008, found a decrease in the overall frequency of blocking events in the Southern Hemisphere, but an increase in the intensity of events.[9]
Global studies attribute blocking trends to climate change
(Mann et al. 2017) show that an unusual, undulating, and persistent jet stream pattern, which has been associated with many of the most extreme, persistent weather events in recent years, including the 2003 European heatwave, the 2010 Moscow wildfires, the 2011 Texas and Oklahoma drought, and the 2016 Alberts wildfires, is becoming more common because of human-caused climate change, and in particular, because of amplified Arctic warming.[10][11]
http://www.climatesignals.org/climate-signals/atmospheric-blocking-increase
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