Explain why the United States suffered 'catastrophic winter' -50 degrees Celsius

According to scientists, global climate change is linked to extreme weather events such as this cold wave in the United States.

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Americans are sinking in the coldest weather days in history when temperatures in many regions drop to -50 degrees Celsius - the lowest heat level in the last 20 years.

American meteorologists say that the cold wave that the US and some North American countries are suffering from an extreme weather phenomenon is called polar vortex.

The polar tornado is flooding south, causing cold weather for the United States

Polar cyclones are large, very cold gas masses present at the two poles (Arctic and Antarctic) of the Earth. The cold air inside these tornadoes will constantly spin in an anticlockwise direction.

When moving in midair, tornado air will become more and more cold and "dense" . Therefore, when the Arctic cyclones flooded the United States, they brought with them a dense snowstorm, with a low heat background, making some places and snow before falling into ice making the whole country America seems to be "frozen".

Washington Post weather editor Jason Samenow described the vortex: "They are a cold gas with storms originating from the North Pole. They often circulate in the Arctic, sometimes, some of its tentacles will slide south ". It is perfectly normal for cold air from polar cyclones to land in the southern polar regions but this year, the level of "invasion" to the south of this tornado is large.

It is because this cold air is very deep in the south, causing a part of the polar tornado to invade the entire territory of the United States, causing the most chilly situation in such history.

Some US scientists believe that global climate change is linked to extreme weather events such as this cold wave in the United States. Accordingly, the ice melted a lot, the heat in the Arctic would increase, the familiar orbit of the Arctic winds only moving within the Arctic would be broken, causing many cold masses to advance south. Therefore, it is possible for the Arctic tornado to land in the United States recently.

To cope with such harsh weather, local authorities have advised people to stay indoors, should not go out on the street when not really necessary to ensure their safety and health by skin People who only need to be exposed to this cold for 5 minutes can get frostbite.