Posted 28 June 2016 by Robertscribbler.
Gigantic Gravity Waves to Mix Summer with Winter? Wrecked Jet Stream Now Runs from Pole to Pole
It’s as if global warming [Ed-M: global weirding] were ringing the Earth’s atmosphere like some great, cacophonous alarm bell. The upper level zonal winds are swinging wildly from record high positive anomalies to record low negative anomalies. Gravity waves — the kinds of big atmospheric waves that tend to move air from the Tropics all the way to the Poles and are powerful enough to cause the Caribbean Sea to ‘whistle’ in the satellite monitors — are growing larger. And 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.
|South Fork of Northern Jet Stream Caught Crossing the Equator. Source: Earth Nullschool.|
Northern Hemisphere Jet Stream crosses the Equator in this Earth Nullschool screen capture to merge with the Southern Hemisphere Jet Stream. It’s the very picture of weather weirding due to climate change. Something that would absolutely not happen in a normal world. Something, that if it continues, basically threatens seasonal integrity.
The big trough today begins near the Northern Hemisphere Pole. It pulls Arctic air down over Eastern Siberia and into a Pacific Ocean storm track. There, a second big dip in the Jet Stream pulls a crazy loop of this upper air flow further south. And here is where things get really weird — for the upper level river of air that began in the Arctic then makes a jump directly across the Equator.
But our story of a wayward Jet Stream doesn’t end there. The upper level air flow that originated near the North Pole joins with a building Southern Hemisphere Jet Stream ridge pattern over the Southeast Pacific. Feeding into very strong upper level winds, it turns southward into a high amplitude wave that crosses the Horn of South America and slams itself, carrying with it a big pulse of extreme warmth, into the upper level airs over Western Antarctica.For more, click at the link below.