Is the cold wave a meteorological disaster?

As the name implies, cold air rushes over like a flood, which belongs to a form of air (cold air) flow. Cold wave is cold air from high latitudes, which rapidly intensifies 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

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 is mainly in the Arctic, Siberia and Mongolia.

There is a cold high pressure in the south. 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.

Baidu Encyclopedia-Cold Wave