What is the solar term after the climatic characteristics of the great cold solar term?

Of the 24 solar terms, the Great Cold is the last one, but people don't know much about it. Come and have a look today! So what are the climatic characteristics of the great cold solar terms? What is the solar term after that? Next, let's take a look at this issue of the old almanac!

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Climatic characteristics of the great cold solar term The great cold falls in the second half of Gregorian calendar 1 month and the second half of lunar calendar1February, which is the last solar term in the lunar calendar. It means that the coldest time of the year has arrived, but the temperature gradually rises from low to high, often higher than the last solar term. The average temperature is -2-4℃, the lowest temperature is generally-14- 17℃, and the extreme minimum temperature can be reduced to -20℃. The lowest temperature in half a year appears in this solar term. The maximum frozen soil depth is 30-40cm, which is often the solar term with the deepest frozen soil in a year. During the severe cold solar term, the atmospheric circulation is relatively stable, and the adjustment period of circulation is about 20 days. When this circulation is adjusted, there will often be a wide range of rain and snow weather and strong winds to cool down. When the west of 80 degrees east longitude is a long wave ridge and East Asia is a coastal trough, under the influence of northwest wind flow control and constantly supplemented cold air, China will have a sustained low temperature.

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Slight cold and severe cold are the periods with the least rainfall in a year. During the cold solar term all the year round, the rainfall in most parts of the south only increased slightly compared with the previous period, with 5 ~10mm in most parts of the south and1~ 5mm in the mountainous areas of the northwest plateau. During the winter drought and the overwintering of crops in South China, the water consumption is small, and the contradiction between supply and demand of farmland water is generally not prominent. However, "if you are bitter and cold, don't complain about rain and snow. Snow is reserved for next year's wheat." In the case of scarce rain and snow, it is undoubtedly beneficial to the growth of early spring crops to water in different areas according to different farming habits and conditions.

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What are the solar terms after the Great Cold? After the severe cold in beginning of spring, 24 solar terms will start a new cycle from the solar terms in beginning of spring. The Great Cold is an annual Gregorian calendar of 65438+1October 20th or 2 1, which is the last festival among the 24 solar terms, and it reflects the temperature changes. "Yi San Li" said that "great cold is the middle, and the upper form is slight cold, so it is called great cold." Since the first sexual intercourse on 1 1 month 1 day, it has been clear and clear since then, and it is extremely cold when it comes out of the ground. "On the day of the great cold, the sun reached 300 degrees. At noon, measure the shadow of the sun with a standard measuring tool. The length of the shadow is 1 foot, 1 foot for 8 minutes, which is equivalent to 2.74 meters today. Compared with the longest solstice in winter, it is much shorter, indicating that the sun has obviously moved to the north. Bucket handle, who watches the Big Dipper at night, points to the ugly position, which is northeast. At this time, it is December of the lunar calendar, also known as ugly month and twelfth month. Twelve letters are hexagrams, and hexagrams are like four yin and two yang, indicating that the underground yang is rising.

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