What are the natural phenomena in the Millennium?

The phenology of the Millennium solar terms mainly includes three aspects: the geese come, the mysterious birds come back, and the birds are ashamed. In other words, at this time, geese began to fly south, swallows began to prepare for migration, and various birds began to store food to prepare for the coming winter.

White dew means: autumn dew; One of the 24 solar terms. Cool autumn wind, blue sky and white clouds, golden leaves, these are the feelings brought by the Millennium solar terms.

1, Introduction to the Millennium:

Millennium, the name of solar terms, is a festival in early September every year. White dew means that the temperature gets cold and you can see it on the vegetation at night. The Millennium solar term is the fifteenth of the twenty-four solar terms. Entering the Millennium solar term, the temperature began to drop, the weather turned cold, the yin gradually increased, and the dew in the morning became thicker and thicker, condensing into a layer of white water droplets, so it was called the Millennium.

2, the characteristics of the millennium:

The Millennium is characterized by the gradual cold weather, large temperature difference between day and night, and dew condensation caused by cold. The Millennium is the watershed of the heat, representing the end of the heat. Although the Millennium temperature is high at noon during the day, it is already cold in the morning and at night.

Millennium is a solar term with large temperature difference in a year. In the Millennium season, the summer monsoon is gradually replaced by the winter monsoon, and the cold air changes from defense to attack. Coupled with the direct point of the sun moving south, the sunshine time in the northern hemisphere is shortened and the light intensity is weakened. At night, it is partly cloudy and often sunny, and the ground radiation dissipates quickly, and the cooling speed gradually accelerates.

The arrival time and phenology of the Millennium;

1, the arrival time of the Millennium:

September 7th to 9th of the Gregorian calendar is the Millennium, which is one of the 24 solar terms. At this time, the sun is located at 165 degrees. Twenty-four solar terms: "August Festival, autumn belongs to gold, gold and white, the yin is getting heavier and heavier, and it is also white and condensed." The white dew means that the temperature begins to drop, the weather turns cold, and the condensation of water vapor on the ground begins to increase.

2. Millennium phenomenon:

During the Millennium solar term, the summer heat gradually disappears, the autumn air is crisp, the osmanthus fragrance is fragrant, migratory birds such as Hongyan and Swallow begin to fly south to avoid the cold, and various birds begin to store food for the winter.

The geese came and the birds came back. After the Millennium, migratory birds that are most sensitive to climate migrate collectively. Hongyan began to fly from the north to the south, and mysterious birds from the south also flew back to the north, and various birds began to store food for winter.

There is a saying in the folk proverb: "The white dew flies in the south in the autumn night", "When beginning of autumn knows it, it makes people sleep, and the sunflower laughs in summer, and the white dew returns to the wild goose, and the osmanthus fragrance fills the garden in the autumn equinox".