The meaning and understanding of cold dew

The meaning and understanding of cold dew is: a traditional solar term in China, usually on the 8th or 9th of 10 in Gregorian calendar. This solar term marks the deepening of autumn and the arrival of cold. During this period, the weather in most parts of China will become cool.

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.

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 representing midsummer has sunk into the west. After the cold dew, the height of the sun continued to decrease and the temperature gradually decreased. Compared with the solar term of Bailu, the temperature of cold dew has dropped a lot, and the cold produces dew condensation, so it is called cold dew. "Twenty-four solar terms" said: September solar terms, cold dew, will condense.

At this time, the temperature is lower than the white dew, with more dew and cold day and night. In China, there is a proverb that dew is white first and then cold, which means that after the dew festival, the dew has changed from a little coolness in early autumn to a little cold dew in late autumn.

Meteorological change

Cold dew is a solar term reflecting the characteristics of climate change. After the cold dew solar terms, the days become shorter, the nights become longer, the sunshine decreases, the hot air slowly recedes, the cold gradually increases, the temperature difference between day and night is larger, and it feels a little chilly in the morning and evening. 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.

Wan Li is clear, warm during the day and cool at night. Thunderstorms have disappeared in most parts of Chinese mainland. 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 northeast and northwest regions in the north show a scene of winter, with thousands of miles of frost and snow in Wan Li, which is quite different from the autumn colors in the south.