The temperature in Beijing is the lowest since the 20th century, 265438+. What is the reason for this cold?

According to the report of the Meteorological Bureau, the temperature in Beijing has been the lowest since the 20th century. But there is an interesting phenomenon that Beijing has set a record for the coldest winter, but why doesn't it snow in Beijing? According to expert analysis, the reason why it doesn't snow in Beijing is the lack of water vapor. One condition of snowfall is that there should be condensation and water vapor in the air. What many people want to ask is why is this cold weather? Because of the collision of a cold current.

It's not only so cold in Beijing this year, but also all over the country. Southern cities have set the coldest winter temperature in recent seven years, which is basically around 10℃, so it is very cold, which is very painful for southerners, because there is no heating in southern cities, and southerners also joked that the indoor temperature is even lower than the outdoor temperature, which shows how painful southerners are. For northerners, it's okay indoors, but it's more painful outdoors, and with the arrival of heavy snow, it's very troublesome and dangerous to travel.

In such a cold winter, we must learn to protect ourselves, especially middle-aged and elderly people, who suddenly get some diseases, including myocardial infarction and cerebral infarction, especially in such a low temperature environment, so it is very dangerous. Because of the weather, we can't escape from reality. We should face these realities. Facing such a cold winter, the first thing is to protect yourself. When you go out, you must be fully armed, and you must wear good clothes to ensure that you don't catch a cold, because if you are frozen, some diseases will really break out, especially middle-aged and elderly people.

Therefore, if there are middle-aged and elderly people at home, we must let them pay more attention to keep warm, especially by covering their faces with hot water towels, so as to ensure that blood vessels, one of which will not cause thrombosis, myocardial infarction and cerebral infarction, can safely spend this cold winter.