Polar vortex

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

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Science and technology

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What Wikipedia says

A polar vortex, more formally a circumpolar vortex, is a large region of cold, rotating air; polar vortices encircle both of Earth's polar regions. Polar vortices also exist on other rotating, low-obliquity planetary bodies.

Excerpt from the Wikipedia article “Polar vortex”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: National Meteorological Center, Camp Springs, MD, Public domain, via Wikimedia Commons.