Cold wave has the characteristics of fast cooling, low temperature, strong wind, large scale and wide range.

Cold wave is a meteorological disaster phenomenon, which usually refers to the cold weather in northern or high latitude areas. The following are some characteristics of the cold wave:

Low temperature: The most striking feature of the cold wave is the sudden drop of temperature, and the weather is cold, and the temperature may drop to tens of degrees below zero or even lower.

Wind chill: Cold wave is often accompanied by strong cold wind, which reduces the somatosensory temperature. After cold wave, serious problems such as low-temperature freezing and low-temperature chilling injury often occur.

Snowfall: During the cold wave, with the decrease of temperature, there will be a wide range of rain and snow weather, which will adversely affect transportation and agriculture.

Duration: The cold wave lasts for a long time, and it often takes days to weeks or even longer to end. This period will have a great impact on people's production and life.

Destructive: The cold wave will bring great destructive effects in transportation, energy and agriculture, such as traffic congestion, which will seriously affect agricultural production and affect the supply of energy such as heating and electricity.