In what season does the cold wave occur?
Cold wave is a natural weather phenomenon. As the name implies, cold air rushes in like a flood. It belongs to a form of air (cold air) flow.
Cold wave is cold air from high latitudes, which rapidly strengthens and invades middle and low latitudes under certain weather conditions, resulting in a wide range of severe cooling, strong winds and rain and snow weather along the way. When this cold air reaches a certain standard, it is called a cold wave.
Cold wave is cold air from polar regions or cold zones in winter, which invades the middle and low latitudes on a large scale like tides. When a cold wave strikes, the temperature will drop sharply, accompanied by strong winds, rain and snow. It has a serious impact on industrial and agricultural production, people's lives and human health.
The cold wave invading China mainly broke out in the Arctic, Siberia and Mongolia.
Most of these areas are located in the Arctic. In winter, there is no sunshine for a long time, and there is snow and ice everywhere. The air masses staying in these areas are getting colder and drier. When this cold air mass accumulates to a certain extent and the air pressure increases to a level much higher than that in the south, it is like a flood stored in a mountain. At the first opportunity, it floods to the south with lower air pressure, forming a cold wave.