Climate Scientist who put 'Polar Vortex' into the Vernacular explains her Findings in plain English

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Tuesday January 29, 2019 · 6:50 PM PST

2019/01/29 · 18:50

Dark arrows indicate rotation of the polar vortex in the Arctic; light arrows indicate the location of the polar jet stream when meanders form and cold, Arctic air dips down to mid-latitudes.

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With easy to understand graphics and everything. Excerpted are few of the key ideas, below.

Polar Vortex Is Here Again. Yes, It’s Connected To Global Warming.

Don’t believe any claims that this cold blast means global warming is a hoax.

by Jennifer Francis, HuffPost — 01/29/2019

[...]

Why cold air plunges south

Greenhouse gas emissions from human activities have warmed the globe by about 1.8 degrees Fahrenheit (1 C) over the past 50 years. However, the Arctic has warmed more than twice as much. Amplified Arctic warming is due mainly to dramatic melting of ice and snow in recent decades, which exposes darker ocean and land surfaces that absorb a lot more of the sun’s heat.

Because of rapid Arctic warming, the north/south temperature difference has diminished. This reduces pressure differences between the Arctic and mid-latitudes, weakening jet stream winds. And just as slow-moving rivers typically take a winding route, a slower-flowing jet stream tends to meander.

Large north/south undulations in the jet stream generate wave energy in the atmosphere. If they are wavy and persistent enough, the energy can travel upward and disrupt the stratospheric polar vortex. Sometimes this upper vortex becomes so distorted that it splits into two or more swirling eddies.

These “daughter” vortices tend to wander southward, bringing their very cold air with them and leaving behind a warmer-than-normal Arctic. One of these eddies will sit over North America this week, delivering bone-chilling temperatures to much of the nation.

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In other words, because the Arctic is warming so much faster than the Mid-latitudes are, the rivers of winds that separate these global regions (also known as the Jet Stream) — are starting to look more and more like this:

Meanders of the Rio Cauto at Guamo Embarcadero, Cuba

As the temperature differential between these regions keep ‘equalizing’, the global ‘engine’ driving these weather currents, has become less intense than it use to be. Less intense equates to a less direct planet-circling course, in our weather delivery systems.

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Indeed, in other Earth-changing Climate news, there are land areas in the once-frozen North, that are being rapidly exposed to sunlight — for the first time in well over 100,000 years! Happening NOW.

Retreating Ice Exposes Arctic Landscape Unseen for 120,000 Years

by Stephanie Pappas, Live Science Contributor — Jan 28, 2019

The retreat of Arctic glaciers is exposing landscapes that haven't seen the sun for nearly 120,000 years.

These rocky vistas have very likely been covered in ice since the Eemian, a period in which average temperatures were up to 3.6 degrees Fahrenheit (2 degrees Celsius) warmer than present, and sea levels up to 30 feet (9 meters) higher.

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At the boundary of ice and rock on Baffin Island in the Canadian Arctic, scientists from the University of Colorado Institute of Arctic and Alpine Research confer.

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As Scientist Francis concludes her article ...

Undoubtedly this new polar vortex attack will unleash fresh claims that global warming is a hoax. But this ridiculous notion can be quickly dispelled with a look at predicted temperature departures around the globe for early this week. The lobe of cold air over North America is far outweighed by areas elsewhere in the United States and worldwide that are warmer than normal. [See Temperature Map.]

The only hoaxing going on, is what the Oil Lobbyists has done to close our “Window of Opportunity” to make ‘meaning change’ to protect these Climate systems.

Warming expert sees 10-year window - US news - Environment

www.nbcnews.com

Sep 14, 2006 — NASA scientist James Hansen, widely considered the doyen of American climate researchers, said governments must adopt an alternative scenario to keep carbon dioxide emission growth in check and limit the increase in global temperatures to 1 degree Celsius (1.8 degrees Fahrenheit). ... “I think we have a very brief window of opportunity to deal with climate ...

That urgent warning has come and gone. And the Epic changes in our Global Climate systems “meanders” on …

All the while the Oil producers continue to rake in their record profits. Unscathed by their intentional deceit, on a global scale.

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Jennifer Francis is a Visiting Professor at Rutgers University and a Senior Scientist at the Woods Hole Research Center. She receives funding from the National Science Foundation.

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Climate Scientist who put 'Polar Vortex' into the Vernacular explains her Findings in plain English

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