Where is Siberia? Why does this place always blow cold air into our country?

Cold wave is a kind of disastrous weather in winter, and people are used to calling it cold wave. The so-called cold wave,

It is the cold air from the north that invaded our country southward on a large scale, causing a large-scale sharp cooling and northerly direction.

The weather process of wind. China's meteorological department stipulates that cooling caused by cold air intrusion can be achieved within one day.

When the temperature is above 10℃ and the lowest temperature is below 5℃, it is called a cold wave.

Process. It can be seen that not every cold air heading south is called a cold wave. Whenever a cold wave comes,

The meteorological observatory issued a cold wave warning, asking everyone to prepare for cold and antifreeze quickly.

How is the cold wave formed? China is located in the southeast of Eurasia. Going north from our country,

Mongolia and Siberia in Russia. Siberia is a very cold place, and further north,

It is located in the northernmost part of the earth-the North Pole. It's colder than Siberia, and it's even colder in cold times.

Very long. The cold wave that affected our country was formed from those places.

Located in the Arctic, Siberia and Mongolian Plateau at high latitudes, it is affected all year round.

The ground does not receive much heat from the oblique sunlight. Especially in winter, sunshine

Moving south, the angle of sunlight in the northern hemisphere is getting smaller and smaller, so the heat absorbed by the ground is getting smaller and smaller.

The temperature on the ground is getting lower and lower. In the Arctic Ocean in winter. The temperature often drops.

Below -20℃, the lowest temperature can reach -60℃-70℃. The average temperature in 65438+ 10 is often -40℃

Below.

Because the temperature in the Arctic and Siberia is very low, the density of the atmosphere will increase greatly and it will be empty.

The continuous contraction and sinking of gas increases the air pressure, thus forming a powerful, profound and broad

Cold high pressure air mass. When this cold and high pressure force is enhanced to a certain extent, it will be like a sea that breaks its banks.

Like the tide, thousands of miles away, surging to our country, this is the cold wave.

Every time a cold wave breaks out, the cold air in Siberia will decrease and the air pressure will also decrease.

Lower it. But after a while, the cold air gathered again, piled up and gave birth to a new one.

The outbreak of cold wave.

The cold wave has a wide influence range, with the east-west length reaching several hundred kilometers to several Qian Qian meters, but it is thick.

The temperature is generally only two or three kilometers. The moving speed of cold wave is tens of thousands of meters per hour, which is different from the speed of train.

Not much. There are three routes that affect the cold wave in China: one is the west road. This is a moment that affects our country

The earliest and most frequent route. Strong cold air starts from the North Pole and goes south across western Siberia.

Enter Xinjiang, then invade North China, Central Plains, South China and even Southwest China along the Hexi Corridor.

Area. The second is the middle road. Strong cold air from Siberia's Lake Baikal and Mongolian people * * * and Guo Yi.

Belt, through the Inner Mongolia Autonomous Region of China, into North China, until the southeast coastal areas. The third is East.

Road. Cold air flows south from northeast Siberia, sometimes through northeast China, and sometimes through the Sea of Japan.

The Korean Peninsula invaded the east coast of China. The main force of the cold wave going south from this route is eastward.

Generally speaking, the strength is not very strong, and the number of times is not too much.