Cold wave refers to a large-scale strong cold air activity in the winter half of the year. How is it formed?

Cold wave is a natural weather phenomenon, which mainly refers to the process of cold air invading low pressure areas on a large scale like a tide in the winter half of the year. It has a great impact on human life. Wherever it goes, it is accompanied by rain, snow and strong winds, and the temperature drops sharply, which is harmful to some extent. The cold wave in our country mainly comes from the southward cold high pressure in the Arctic and Mongolia. The reason is that the snow-covered areas have less sunlight all year round. The air becomes colder and drier due to the influence of temperature, and finally reaches a certain level of air pressure venting to the low pressure area. . 1. Causes of cold wave

Cold wave, also called cold wave, is a phenomenon in which cold air moves from high latitudes to low latitudes. my country's meteorological department stipulates that the temperature dropped by cold air reaches more than 10 degrees Celsius in a day, and the minimum temperature is below 5 degrees Celsius, which is a cold wave during a cold air outbreak. Our country is located in the southeast of Eurasia, with Russian Siberia and Mongolia to the north, and the Arctic further to the north. Most cold waves in our country are caused by the Arctic region, where there is less sunlight radiation and less sunlight heat. This is especially obvious in winter, where surface temperatures are low and ice and snow are the norm. Winter is getting worse, the low temperature range is getting wider, and cold air masses are gathering. Affected by high-altitude atmospheric circulation, it invades southward and forms a cold wave on a huge scale. 2. The main hazards of cold wave

Cold wave is a kind of disastrous weather in the winter half of the year. The formation of strong winds poses a certain threat to coastal areas. Rain, snow, and strong winds have a certain impact on transportation, agriculture, etc., causing considerable harm. In the face of cold wave damage, people can take some effective preventive measures to prevent losses, such as cultivating cold-resistant varieties in agriculture to enhance cold resistance. When weather conditions are unfavorable, such as strong winds, passenger transport must be suspended promptly to avoid traffic accidents. When the weather suddenly gets cold, take measures to keep out the cold and keep warm. A cold wave has a series of characteristics and is an invasion of cold air. In the Loess Plateau, there is less wind and snow, which can easily cause sandstorms; in North China, it is often accompanied by wind and snow; in the Northeast, there is heavy wind and snow, with heavy snowfall; Inner Mongolia has obvious low temperatures.