What do light snow and heavy snow mean in what season?

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What season is light snow and heavy snow? Both are

What do light snow and heavy snow mean in what season?

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What season is light snow and heavy snow? Both are in winter.

Xiaoxue is the twentieth of the twenty-four solar terms. The time is165438+1October 22 or 23 of the Gregorian calendar every year, that is, when the sun reaches 240 degrees of the yellow meridian. "Light snow" is a solar term reflecting the climate characteristics. There is no necessary connection between the light snow in solar terms and the light snow in the weather. The meaning of "light snow" in solar terms is different from that in daily weather forecast. Xiaoxue solar term is a climate concept, which represents the climate characteristics during Xiaoxue solar term. The light snow in the weather forecast refers to the snow with less snowfall intensity. Light snow solar term is a solar term with high frequency of cold wave and strong cold air activity.

During the light snow solar term, a relatively stable meridional circulation has been established in East Asia, and low pressure or trough often appears in Siberia. When moving eastward, there will be a large-scale cold air going south, and there will be a large-scale gale and cooling weather in eastern China. Due to global warming, snowfall in parts of southern China will be delayed, while in the north, it has entered the freezing season.

The ancient book "Qunfangpu" said: "A light snow will snow when it is cold, but the ground is not cold and the snow is not heavy." It means "light snow". Because of the cold weather, the solar term turns from rain to snow, but at this time, because the ground is not very cold and there is not enough snow, it is called light snow. Entering this solar term, the northwest wind began to become a frequent visitor in China, and the temperature dropped.

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Heavy snow, the second1solar term in the twenty-four solar terms, and the solar calendar1February 6-8, when the sun reaches 255, it enters the festival. 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. "Twenty-four solar terms" said: "There is heavy snow, November Festival, and there is abundant snow so far." Heavy snow means that the possibility of snowfall is greater than that of light snow, the weather is colder, and the snow often falls heavily and widely. Due to global warming, the snowfall in the south of China is small, but the north is frozen for thousands of miles.

The solar terms divided by the leveling method can be divided into three periods in the heavy snow season: "When birds wait, they don't sing;" Second, wait for the tiger to pay; Third, when you stand out. "That is to say, because of the cold weather at this time, the birds in Hao Han no longer sing; At this time, Yin Qi was in the heyday, and the so-called prosperity and decline, Yang Qi has sprouted, and tigers have begun to courtship; " "Liting" is a kind of bluegrass, which feels the germination of yang and sends out new buds.

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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."