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What is the solar term behind the cold dew? The climate change of frost

DailyBird Culture 2021-10-09 1 0

cold dew is the 18th of the 24 solar terms. When the cold dew comes, people have changed into autumn clothes. When the autumn is thick, the streets are full of autumn. What is the solar term after the cold dew? Let's have a look! It's already very cold in the cold dew. You should add more clothes after the frost!!

寒露后面的节气是什么 霜降的气候变化

meteorological changes during frost fall

"frost fall" solar terms are characterized by cold weather in the morning and evening, hot at noon, large temperature difference between day and night and obvious dryness in autumn. On the national average, frost is the season with the largest temperature difference between day and night in a year. After entering the frost term, the cold air activities affecting China are more and more frequent, and the temperature difference between day and night increases rapidly. Especially in Jiangnan and South China, the temperature fluctuation is more and more obvious; Some areas in the northwest and northeast have already shown a scene of "cold wind and fallen leaves" in early winter. During the frost period, generally from late October to early November, due to the gradual dominance of dry and cold air, warm and wet air has been marginalized. Many weather with summer and early autumn characteristics quit, and the weather is relatively simpler. Before and after the beginning of winter, there is often strong wind and cooling weather, and some places have entered winter in a short time.

what is the solar term behind the cold dew? The

cold dew solar term is followed by frost. Frost fall is the 18th of the 24 solar terms, the last solar term in autumn, and also means the beginning of winter.

local agricultural proverbs

1. Hunan: the cold dew and frost fall in October, harvest late rice and dig potatoes.

2. Anhui: after the cold dew harvest, the frost turned the ground over.

3. Jiangsu: there is no green rice in the cold dew, and the frost falls together.

4. Shandong: the weather is getting colder as soon as the frost comes. Hurry to harvest, sweet potatoes and peanuts. Cut and dry the melons while it's sunny.

5. Shanxi: it's time to catch autumn ploughing with cold dew, and don't relax during autumn harvest and autumn planting.

6. Hebei: Cold Dew and frost fall, harvest soybeans. Pay close attention to the field and put it into storage in time. Agricultural activities of

and

after the frost term of

and

, the cold air activities become more frequent and the temperature difference between day and night becomes larger. The "frost falling" solar term has nothing to do with "frost falling". It is not that it will "fall" when entering the frost falling solar term. In fact, "frost" does not fall from the sky, but the water vapor on the ground condenses when encountering cold air due to the change of temperature difference. There is no concept of "frost fall" in meteorology. Generally speaking, the first frost in autumn is called "early frost" or "first frost", and the last frost in spring is called "late frost" or "final frost"; The interval from the last frost to the first frost is the frost free period. During the frost season, most parts of the north have finished the autumn harvest. Even cold resistant onions can no longer grow, because "frost can't afford onions. The longer they grow, the more empty they will be". In the south, it is the busy season of "three autumn". Only single season hybrid rice and late rice are harvested, planting early stubble wheat and early stubble rape; Pick cotton, pull out cotton straw, plough and prepare the land.

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