- Cyclones are strongest in winter and usually weaken or even disappear in summer.
- When the polar vortex weakens or even splits, it pushes the icy winds away and pushes southward toward the United States.
- The stronger the polar vortex, the milder the winter in the United States.
The polar vortex has recently entered the popular dictionary every winter with fear or trembling: but what is it? Is it a storm heading south from the Arctic or perhaps a new climate pattern for El Niোরo-like concerns? Not to both, scientists say.
The polar vortex – everyone’s favorite winter whip boy – is actually a large, circular region of higher cold air in the atmosphere that usually revolves around the North Pole (as its name suggests). This is a common pattern that is strong in winter and usually keeps the coldest weather in the North Pole bottled.
When the polar vortex is “stronger,” colder winds are less likely to blow deeper into North America, says weather.com meteorologist Jonathan Erdman. The stronger the polar vortex, the milder the winter in the United States.
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But occasionally, some cyclones may break or move south, which can bring down the unbearably cold temperatures south to the United States, Europe and Asia.
When the polar vortex weakens or even splits, it pushes the icy winds away and pushes southward toward the United States.
How the vortex position determines where it is cold
Cyclones are strongest in winter and usually weaken or even disappear in summer. Its location could determine which part of the United States will be attacked by Arctic winds.
It can be split into several parts, then reassembled, such as the police of “Terminator 2”.
And despite being hashtag-friendly, it’s not exactly a new phenomenon.
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According to Jeff Kihel, a senior scientist at the National Center for Atmospheric Research in Boulder, Colorado, vortices probably “existed in one form or another for the last 4.5 billion years.”
In fact, it is thought that the term “polar vortex” first appeared in a 1853 issue of Little’s Living Age magazine, according to the National Oceanic and Atmospheric Administration.
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And although it has been understood by scientists for decades, it entered the popular dictionary only a few years ago as a synonym for winter and winter weather.
Polar vortices may recently be associated with global warming
One caveat: Scientists have reported that polar vortices have become more frequent in recent years.
Some scientists have suggested that there may be a link between global warming and cyclones: the theory is that when strange warming invades the Arctic, some of the cold that is supposed to be there – including the cyclones – descends to South America and Europe instead.
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In any case, do not be afraid of polar vortices. It’s not like a tornado or a hurricane; This is not something you can one day look up and see in the sky; There is no strange whirlwind of snow and ice roaring from Canada.
When it comes, it will be very cold, which is also known as winter.