Is it really cold after 24 solar terms of heavy snow?

It will get cold after heavy snow in the 24 solar terms. The most common solar term in heavy snow is cooling.

According to statistics, the strongest month of cold air in China is 165438+ 10. After the strong cold air, the average temperature in 65438+February in most parts of the north is between -20℃ and -5℃, and frost will also appear in the south. Strong cold air often brings snowfall or blizzard.

Strong cold air reaches the south, especially in Guizhou, Hunan, Hubei and other places, which is prone to freezing rain. Freezing rain is snow falling from the upper cold layer, sometimes it melts into rain in the middle layer, and becomes supercooled water with raindrops at a temperature below 0℃ in the lower cold layer. The supercooled water drops fall from the air, reach the ground and touch anything on the ground, and immediately freeze to form freezing rain.

When freezing rain occurs, uneven ice shells appear on the ground and objects, which will have a great impact on traffic, electricity and communication, and will also cause damage to fruit trees. According to the statistics in the book Climate in the Middle and Lower Reaches of the Yangtze River, freezing rain is prone to occur in the middle and lower reaches of the Yangtze River when the temperature is -3 ~ 0℃ from June to February every year, and the probability of freezing rain is 76%.

Extended data

Gregorian calendar 65438+February 6-8, when the sun reaches 255. The arrival of heavy snow in solar terms means that the weather will get colder and colder, and the possibility of snow will greatly increase. Like light snow, rain and Grain Rain, heavy snow is a solar term that directly reflects precipitation.

People often say that "snow will bring a good harvest". In severe winter, snow covers the earth, so that the temperature around the ground and crops will not drop very low because of the cold current, and winter crops create a good wintering environment. When the snow melts, the soil moisture content is increased to meet the needs of crop growth in spring.

The content of nitride in snow water is five times that of ordinary rain water, which has a certain effect on fertile fields. There is an agricultural proverb called "wheat covers three quilts this year and sleeps with steamed bread next year."

Generally, rime will appear in most areas of northwest, northeast and Yangtze River valley from June165438+1October to February of the following year, and it is more common in mountainous areas with high humidity. Rime is the milky white ice crystal precipitation formed on objects by direct condensation of water vapor in the air at low temperature or direct freezing of supercooled water droplets.

The places with more rime days in winter in China are: Heilongjiang, Jilin, northern Xinjiang and northern Shaanxi. Rime is a kind of natural beauty that people generally appreciate, but sometimes it can also become a natural disaster, which will seriously break wires and trees and affect traffic, power supply and communication.