Beijing hit a new low this winter. What causes the cold air?

The temperature in Beijing hit a new low this year. When the low temperature appeared, many cars in Beijing were covered with a thick layer of frost. Many citizens wrote words or wishes on their cars, and many people drew lovely figures.

The Meteorological Observatory said that this year may be affected by the El Ni? o phenomenon, leading to extreme weather phenomena. The extreme weather phenomenon of El Nino occurred in the winter of 20 19.

Due to the influence of sunspots and the change of the declination angle of the moon, it becomes cold in a short time. It is said that the cooling-off period began at 202 1.

In 20 19, this extremely cold weather phenomenon occurred in the United States and Japan. At that time, the temperature in some parts of the United States reached MINUS 52 degrees, and many people were too cold to go out, because going out was likely to become an ice sculpture. There is also Japan, a coastal city, but its lowest temperature has actually reached more than 30 degrees below zero, which has brought great inconvenience and even serious disaster to local residents. These two places are very cold, but the temperature in Australia is very high, and the highest temperature can reach 52 degrees. Many people are afraid to go out, it is too hot to go out, because they will get heatstroke when they go out, and they can't stand it. Of course, this only means that such extreme weather may occur, but it is not necessarily the case.

In the next weather, the temperature will be even lower. When you go out, you must take warm and cold-proof measures and wear down jackets, cotton boots, hats, scarves and masks. Winter is the high incidence of influenza, and the elderly must pay attention to the occurrence of cardiovascular diseases. The colder the weather, the greater the possibility of cardiovascular diseases, especially those with heart disease. The weather is particularly cold, and it is easy to get angina pectoris when going out. You can't go out when the temperature is extremely low.