What are the characteristics of cold wave?

Han dynasty is located in the northwest desert and loess plateau, which is characterized by less wind and snow and is easy to cause sandstorm weather; In Inner Mongolia grassland, it is windy, snowy and cold weather; In North China and Huanghuai areas, cold waves are often accompanied by snow and snow.

In the northeast, it is characterized by more violent winds and more snow, and the snowfall is the highest in the country; Jiangnan is often accompanied by freezing rain. It can occur from September to May of the following year, concentrated in March and April, and it occurs in most parts of China.

Extended data:

The freezing rain, snow and ice weather brought by the cold wave is extremely harmful to transportation. The moving speed of the cold wave is tens of thousands of meters per hour, which is similar to the speed of the train. There are roughly three routes for the cold wave to affect China.

One is west road. This is the earliest and most frequent route affecting China. Strong cold air starts from the Arctic, goes south through western Siberia, enters China and Xinjiang, and then invades North China, Central Plains, South China and even Southwest China along the Hexi Corridor.

The second is the middle road. Strong cold air flows from Siberia and Lake Baikal in Mongolia, passes through Inner Mongolia Autonomous Region of China, enters North China, and reaches the southeast coastal areas.

The third road is East Road. Cold air flows south from northeast Siberia, sometimes through northeast China, sometimes through the Sea of Japan and the Korean Peninsula, and invades the eastern coast of China. The main force of the cold wave going south from this route is eastward, which is generally not very strong and the frequency will not be too much.