What does the white dew mean today?

Millennium means that the weather turns cold and cold produces dew condensation. At this time, we will find many dewdrops on the ground and on the leaves in the morning. This is because water vapor condenses at night to form tiny water droplets, which are densely attached to vegetation. In the morning, after the sun shines, the crumbling water drops become crystal clear and attractive.

The Millennium is an important solar term reflecting the cold growth of nature. Since the Millennium season, the weather in the north is getting colder and colder, which is no longer suitable for the life of geese, a migratory bird. Waiting for the "Hongyan to come" for a thousand years. At this time, migratory birds such as Hongyan began to move south for the winter.

Millennium meteorological change

After entering the Millennium solar terms, the summer monsoon is gradually replaced by the winter monsoon, and the cold air gradually moves southward frequently. In addition, the position where the sun directly touches the ground moves south, and the sunshine time in the northern hemisphere becomes shorter and the sunshine intensity weakens. At night, it is often partly cloudy and sunny, and the ground radiation dissipates quickly, so the temperature drop is gradually accelerated. There is a saying called "Qiu Qiu in a thousand years, it is cold all night."

After the Millennium, the temperature difference between day and night gradually widened. Although the temperature is high at noon during the day, it is already very cold in the morning and at night. According to the standard of "average weather temperature" proposed by modern scholar Zhang Baokun, the average weather temperature is 10-22℃ in spring or autumn. According to this standard, from the beginning of the Millennium solar term, all localities began to enter autumn one after another.