The origin of heavy snow solar terms?

Every year around 65438+February 7 in Gregorian calendar, when the sun reaches 255 degrees of the Yellow Meridian, it is a "heavy snow" solar term. Yuan Wucheng's book "Twenty-four Solar Terms" said: "At this point, the snow is abundant."

The heavy snow in the project means that the weather is colder, and the possibility of snowfall is greater than that during the light snow solar term, which does not mean that the snowfall must be very large. Like the solar terms of light snow, rain and Grain Rain, the solar terms of heavy snow directly reflect the solar terms of precipitation. ?

The twenty-four solar terms are the product of agricultural civilization, and the main climatic factors affecting agricultural production are precipitation, temperature and light. Like the light snow solar terms, the heavy snow solar terms reflect the changing trend of temperature and precipitation, and are the reflection of agricultural culture on festivals.

Heavy snow is a solar term reflecting climate characteristics. Climate factors include precipitation, temperature and light, among which precipitation is an important factor. Meteorology, rain, snow, hail and other water vapor condensation falling from the sky to the ground are called "precipitation". The arrival of heavy snow in solar terms means that the weather is getting colder and colder and precipitation is increasing.

Meteorological change

"Heavy snow" is a solar term reflecting the climate characteristics. Heavy snow solar terms are characterized by a significant drop in temperature and an increase in precipitation. During the heavy snow season, most parts of China have entered winter, and the minimum temperature has dropped to 0℃ or below. In areas where cold air meets warm air at the front of strong cold air, there will be heavy snow or even blizzard.

At this time, snow has gradually accumulated in the Yellow River basin, and in the farther north, it is snowing heavily.

Refer to the above? Baidu encyclopedia-heavy snow