Claim that jet stream crossing equator is ‘climate emergency’ is utter nonsense

Claim that jet stream crossing equator is ‘climate emergency’ is ut...

“This is total nonsense,” 

“Flow often crosses the equator.”

“The analysis is making mistakes that even one of my junior undergrads would not make,” 

~Cliff Mass, professor of meteorology at the University of Washington. 

Mass added that the cross-equator flow identified by Scribbler and Beckwith is not between mid-latitude jet streams, as claimed. 

“Cross-equatorial flow at both upper and lower levels is part of the seasonal transition of the Western Pacific monsoon through boreal summer,” “Sometimes the flows connect up with each other and make it look like a larger flow structure is causing the jet stream to flow from one hemisphere to the other, but it’s in no way unprecedented,”

~ Ryan Maue, a senior meteorologist with a doctoral degree who works at WeatherBell Analytics, agreed with Mass that the cross-equator flow is totally normal and not evidence of a joint hemispheric jet stream.

 

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“I’d say cross-equator flow cannot be unprecedented, maybe not even all that unusual.” 

~ Jennifer Francis, a professor of meteorology at Rutgers University, the scientist who developed the hypothesis that global warming is destabilizing the polar jet stream suggested Scribbler and Beckwith may have misapplied the theory.

The Southern Hemisphere Jet Stream actually seems to entwine with the Northern, across the equator. This equator crossing behavior has been persistent for months and at a volume that certainly must break with history. We appear to have entered a new regime.

source earth nullschool

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