What are the climatic characteristics of cold dew?

The climatic characteristics of cold dew are temperature drop, temperature difference between day and night increase, seasonal dryness and evil, and the end of rainy season.

1, temperature drop:

After the cold dew solar term, the temperature began to drop obviously, especially in the northern region. It is common for the temperature to drop by 8℃ to 10℃ after the autumn rain brought by a strong cold air.

2. The temperature difference between day and night increases:

With the arrival of cold dew, the temperature difference between day and night gradually increases. Autumn is often crisp in the daytime, but a little cool at night.

3, do evil in season:

From the perspective of traditional Chinese medicine, the biggest feature of the southern climate in the cold dew season is that "dryness" is the evil of the time. At this time, the weather is dry, the day is hot and the night is cool, and people's sweat evaporates quickly, which is prone to symptoms such as dry skin, dry mouth and dry throat.

4. The rainy season is over:

The cold dew solar terms mark the end of the rainy season. In most parts of our country, after the cold dew, the cold air in the north has some influence. The weather is often warm during the day, cool at night and dry with little rain.

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Cold dew is the seventeenth solar term among the twenty-four solar terms and the fifth solar term in autumn. Fight with each other; Longitude of solar arrival195; Gregorian calendar1October 7 -9 10 every year. Cold dew is a festival in late autumn and the beginning of the full moon in the dry calendar. Cold dew is a solar term reflecting the characteristics of climate change. When entering the cold dew, there is cold air going south, the temperature difference between day and night is large, and autumn dryness is obvious.

After the cold dew, the cold air in the north has a certain influence, and most parts of China are controlled by cold high pressure, and the rainy season is over. Controlled by cold and high pressure, it is warm during the day, cool at night and crisp in autumn during the day. From the climate characteristics, in the cold dew season, the autumn in the south is getting stronger, cool and cool, with little rain and dryness; The vast area in the north has shown the scene of winter. The traditional customs of cold dew mainly include enjoying maple leaves, eating sesame seeds, eating crabs and drinking autumn tea.

Cold dew is the end of the full moon in the dry calendar and the beginning of the full moon. At night, looking up at the starry sky, you will find that the "Big Mars" (Antares) representing midsummer has sunk into the west. After the cold dew, the height of the sun continued to decrease and the temperature gradually decreased. Cold dew is called "cold dew" because the temperature is much lower than that of Bailu solar terms, and cold produces dew condensation.