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What are the three phases of light snow phenology in the 24 solar terms

DailyBird Culture 2021-10-08 1 0

light snow solar term is the 20th of the 24 solar terms. The name of the solar term is phenology. At the beginning of the light snow solar term, there will be a drop in temperature and three phenological phenomena. What are the three phases of light snow phenology? Let's take a look with Xiaobian!

小雪 also want to know "24 solar terms: will Xiaoxue get married?"


"November 22 is the" Xiaoxue "of the 24 solar terms. When the Yellow longitude of the sun reaches 240 degrees, the Xiaoxue solar term begins. At this time, the temperature drops, the air layer temperature gradually drops below 0 ℃, and snow begins to fall, but the amount of snow is small. In the light snow solar term, a relatively stable meridional circulation has been established in East Asia. There are often low-pressure or low trough in Siberia. When moving eastward, there will be large-scale cold air going south, and a large-scale gale cooling weather will appear in the east of China. The light snow solar term is a solar term with high activity frequency of cold wave and strong cold air. Under the influence of strong cold air, it is often accompanied by the first snowfall in winter.


in the light snow solar terms, the first is the disappearance of rainbow, the second is the falling of heaven and earth, and the third is blocked into winter. It means: due to the lower temperature, there is more snow in the north, it will no longer rain, and the rain rainbow will be invisible; In addition, due to the rise of Yang Qi in the sky and the decline of Yin Qi in the underground, yin and Yang do not intersect and heaven and earth are not connected; Therefore, heaven and earth are closed and turn into cold winter. China has a vast territory, "light snow" typically reflects the climate of the middle and lower reaches of the Yellow River. At this time, the North has entered the freezing season. "The lotus has no rain cover, and the chrysanthemum residue still has proud frost branches". At this time, it is a scene of early winter. In general, the weather during the "light snow" period presents the following two climatic characteristics: the temperature continues to decline,


in the beginning of winter solar term, there is snow in most parts of northwest and Northeast China. When it comes to the light snow solar term, it means that there will be snow in North China. If the beginning of winter solar term marks the beginning of winter in most parts of northern China, when it comes to the light snow solar term, the direct manifestation of cold air is to make the temperature in these areas gradually reach below 0 ℃. We all know that only when the temperature in and under the cloud is below 0 ℃, the form of precipitation changes from rain to snow. Therefore, it is an indisputable fact that the temperature in the light snow stage is lower than that in the winter stage. The middle and lower reaches of the Yangtze River have entered the winter


starting winter solar terms. Basically, northern China has entered winter. In the light snow solar term, many areas in the middle and lower reaches of the Yangtze River have entered winter. Although the national precipitation gradually falls into the trough of the year with the arrival of winter, the rainfall in the south of the Yangtze River is still more than that in the north of the Yangtze River. Even if there is first snow in this area in mid and late December, the rainy weather at this time gives people the feeling that it is not cool in late autumn, but wet and cold. This feeling is much more uncomfortable than people with heating conditions in dry and cold areas in the north.


you may also like: 24 solar terms. Ancient poetry about light snow solar terms. What solar terms is November 22, 2016: when is light snow? What month and day is light snow in 2016? The origin of the light snow solar term

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