The origin and introduction of light snow: the difference of solar terms between north and south.

"The Book of Filial Piety" says: "On the 15th day after (beginning of winter), the bucket pointed to the sea, and it was a light snow. The sky and the earth are overcast, the temperature is rainy, and the cold is snowy. At that time, those who talked less were not cold and the snow was not heavy. " Light snow is one of the 24 solar terms in China, and its origin and introduction may not be clear to many people. However, China has a vast territory and abundant resources, and the climate difference between north and south is also great. What's the difference between the days of Xiaoxue? Come and have a look with us.

The origin and brief introduction of light snow

When you hear the name "Xiaoxue", you may have some misunderstandings that it will snow this year. In fact, light snow is just a metaphor, a climate concept. Every year165438+1October 22 -23, when the longitude of the sun reaches 240 degrees, light snow comes on time with the severe winter. Light snow is often accompanied by strong cold air and increased precipitation, which means that the weather will get colder and colder, and it will also bring a certain probability of rainfall and snowfall.

"light snow" in the north

In the northern region, the arrival of light snow solar terms is accompanied by cooling, rainfall and even snowfall. At this time, northerners mainly keep warm from the cold. Fruit farmers will also start pruning fruit trees and trunks to prevent freezing. For convenience, vegetables are also stored in the cellar or buried in the soil. In the light snow season, the climate in the north is cold and the precipitation increases, so it is necessary to do a good job of frost and moisture prevention for crops. For example, harvested cabbages will be dried for several days in sunny days before storage.

"light snow" in the south

Although the temperature in the south is not as low as that in the north, it has begun to show the scene of early winter. Due to the isolation of the Qinling Mountains, cold air will be blocked when it goes south, reducing its power, so the winter in South China is quite warm. The temperature is not low enough, so the probability of snowfall is very small. Only in the dead of winter, or in the mountainous areas with high altitude, can you have a chance to see the beautiful scenery of "like the strong wind in spring, blowing the petals of ten thousand pear trees at night". There is little snow, so there are still many southerners who haven't seen snow yet.