Jet Stream Crosses the Equator

A post about the jet stream now crossing the equator, published by Robert Scribbler yesterday, is making a lot of noise on social networks today. 

In his post, titled “Gigantic Gravity Waves to Mix Summer With Winter? Wrecked Jet Stream Now Runs From Pole-to-Pole,” Scribbler writes:

“The Jet Stream now has redefined all boundaries — flowing at times from the East Siberian Sea in the Arctic across the Equator and all the way south to West Antarctica. 

That’s bad news for seasonality.

Prevention of mixing of air between Hemispheres by the thick, hot tropical air mass is what has generated a strong division between Summer and Winter during the Holocene Climate Epoch.

However, erode that boundary and you get more Summer heat spilling over into the Winter zone and vice versa. You get this weather-destabilizing and extreme weather generating mixing of seasons that is all part of a very difficult to deal with ‘Death of Winter’ type scenario.”

Wind – 250 hPa – June 28, 2016 @ 09:00 UTC. Credit: Earth Nullschool (link to this setup)

Later on, Paul Beckwith, a part-time Geography professor (climatology, oceanography, environmental issues) at the University of Ottawa,…… Read more »