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Polar vortex - Wikipedia
The stratospheric polar vortex is an area of high-speed, cyclonically rotating winds around 15 km to 50 km high, poleward of 50°, and is strongest in winter. It forms during autumn when Arctic or Antarctic temperatures cool rapidly as the polar night begins.
What is the Polar Vortex? - National Weather Service
The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter.
What Is the Polar Vortex? | NESDIS | National Environmental Satellite ...
The polar vortex is an area of low pressure—a wide expanse of swirling cold air—that is parked in polar regions. During winter, the polar vortex at the North Pole expands, sending cold air southward.
Polar vortex | Meteorology, Climate Change, Arctic Weather - Britannica
polar vortex, large area of persistent low pressure generally located above each of Earth’s polar regions and containing a mass of extremely cold air.
The Polar Jet Stream and Polar Vortex - MIT Climate Portal
The polar jet stream and polar vortex are two rings of fast-moving air around the Arctic, which, as the climate warms, may change in ways that cause some places to see more extreme cold spells during winter.
Understanding the Arctic polar vortex - NOAA Climate.gov
The winds enclose a large pool of extremely cold air. (There is an even stronger polar vortex in the Southern Hemisphere stratosphere in its winter.) The stronger the winds, the more the air inside is isolated from warmer latitudes, and the colder it gets.
Polar Vortex: Everything You Need to Know About Falling Temperatures
What Is the Polar Vortex? The polar vortex is a circular shape of low pressure and strong winds that forms high above the Earth's surface. It develops in the stratosphere, a layer of the atmosphere that sits above the troposphere where everyday weather occurs.
The polar vortex is awakening again. Is cold weather in the forecast?
In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah...
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