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  2. Polar vortex - Wikipedia

    en.wikipedia.org/wiki/Polar_vortex

    The term polar vortex can be used to describe two distinct phenomena; the stratospheric polar vortex, and the tropospheric polar vortex. The stratospheric and tropospheric polar vortices both rotate in the direction of the Earth's spin, but they are distinct phenomena that have different sizes, structures, seasonal cycles, and impacts on weather.

  3. Here's what you need to know about the polar vortex

    www.aol.com/heres-know-polar-vortex-165732130.html

    AccuWeather forecasters break down the science behind the polar vortex and how it can influence the weather for locations thousands of miles away. While the name for this phenomenon may sound ...

  4. What is the polar vortex? In-depth look at how it can affect ...

    www.aol.com/polar-vortex-depth-look-affect...

    The polar vortex is a gigantic, circular area of cold air high up in the atmosphere that typically spins over the North Pole (as its name suggests). The polar vortex is a gigantic, circular area ...

  5. Sudden stratospheric warming - Wikipedia

    en.wikipedia.org/wiki/Sudden_stratospheric_warming

    Meteorologists typically classify vortex breakdown into three categories: major, minor, and final. No unambiguous standard definition of these has so far been adopted. [3] However, differences in the methodology to detect SSWs are not relevant as long as circulation in the polar stratosphere reverses. [10] "Major SSWs occur when the winter ...

  6. Explainer: What is the polar vortex and why is it so cold?

    www.aol.com/news/explainer-polar-vortex-why-cold...

    As ominous as the term polar vortex sounds, meteorologists say the phenomenon is not new, nor despite its sound does it refer to a cyclone of cold or a freakishly dangerous storm. "The term 'polar ...

  7. Vortex - Wikipedia

    en.wikipedia.org/wiki/Vortex

    In general, vortex lines (in particular, the axis line) are either closed loops or end at the boundary of the fluid. A whirlpool is an example of the latter, namely a vortex in a body of water whose axis ends at the free surface. A vortex tube whose vortex lines are all closed will be a closed torus-like surface.

  8. How does the polar vortex lead to Arctic outbreaks?

    www.aol.com/weather/does-polar-vortex-lead...

    The polar vortex is a large storm that dwells in the middle and upper parts of the atmosphere and typically resides around the Arctic Circle.

  9. Atmospheric circulation - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_circulation

    In the upper atmosphere of the Ferrel cell, the air moving toward the equator deviates toward the west. Both of those deviations, as in the case of the Hadley and polar cells, are driven by conservation of angular momentum. As a result, just as the easterly Trade Winds are found below the Hadley cell, the Westerlies are found beneath the Ferrel ...

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