Light snow and heavy snow in 24 solar terms

Light snow is the twentieth solar term among the twenty-four solar terms and the second solar term in winter. Heavy snow is 2 1 of the 24 solar terms and the third solar term in winter.

The time is Gregorian calendar165438+1October 22 or 23, that is, when the sun reaches 240 degrees of the yellow meridian, light snow is a solar term reflecting precipitation and temperature, and it is a solar term with high frequency of cold wave and strong cold air activity. The arrival of the light snow solar term means that the weather is getting colder and colder and the precipitation is gradually increasing.

Light snow is a climatic concept, and its climatic factors include precipitation, temperature and light. Xiaoxue is called Xiaoxue because it is the product of cold weather. During this solar term, the climate is not deep and the precipitation is not heavy. Therefore, it is used to compare the climate characteristics during this solar term. The solar term "light snow" is a solar term reflecting the changing trend of temperature and precipitation, and does not represent the amount of light snow under this solar term. The solar term "light snow" is not necessarily related to the "light snow" in the weather.

Historical origin of heavy snow

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. 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 term, the heavy snow solar term is a solar term reflecting the changing trend of temperature and precipitation, and it is also a reflection of agricultural culture on festivals.

Heavy snow is a solar term reflecting climate characteristics. Climate factors include precipitation, temperature, light and so on. Among them, precipitation is an important factor of climate. Meteorology calls the condensation of water vapor falling from the sky to the ground "precipitation". The arrival of heavy snow in solar terms means that the weather is getting colder and colder and precipitation is increasing.