What is the cold wave and how is it formed?

Cold wave is a kind of disastrous weather in winter, and people are used to calling it cold wave. The so-called cold wave refers to the cold air from high latitudes, which rapidly strengthens under certain weather conditions and invades the middle and low latitudes, causing severe cooling, strong winds and rainy and snowy weather along the way. When this cold air reaches a certain standard, it is called a cold wave.

How is the cold wave formed?

In the Arctic, due to the weak sunlight, the ground and the atmosphere get less heat, and it snows all year round. In winter, the direct sunlight passes through the equator and reaches the southern hemisphere. The arctic region is colder and wider, and the temperature is generally below MINUS 40℃-50℃. Large-scale cold air masses gather to a certain extent, and under the action of suitable high-altitude circulation, they will invade southward on a large scale, forming cold wave weather.