Which solar term has the biggest temperature difference between day and night? Why is this happening?

There are four seasons in a year: spring, summer, autumn and winter. In China, a year is divided into 24 solar terms, each with different characteristics, symbolizing different weather and climate. There will be 40 days in dog days in 2020. After the hot summer, in September of 2020, many parts of the country gradually had a cool atmosphere. On September 7, 2020, the Millennium season just started, and summer began to slowly change to autumn.

The Millennium solar term is also the solar term with the largest temperature difference among all solar terms in the whole year. Many people can clearly feel that after nightfall, the temperature will be significantly lower than that in summer. After the hot summer, many areas rely on air conditioning to cool down. Finally, after the Millennium, many areas will be cool without air conditioning at night, and some northern areas even need to cover themselves with quilts to keep warm at night.

After the Millennium, the main summer monsoon in hot summer turned into winter monsoon, which caused a sharp cooling in many areas. At the same time, the sun moves south, which makes the sunrise late in the morning and sunset early in the evening in most parts of China, and the daytime sunshine is obviously shortened, which also leads to the temperature drop; Coupled with the influence of winter winds, the temperature difference between morning and evening after the Millennium is very large.

Therefore, in September, the Millennium solar term, everyone must add clothes to keep warm according to the temperature while feeling the coolness brought by cooling, so as to avoid the excessive temperature difference between morning and evening, which will affect their health. When traveling, they should pay more attention to check the weather forecast in time and add or subtract clothes according to the weather. The wind in winter is usually very strong, so many areas are sunny. Don't forget to keep out the sun at this time. When going out, you should apply sunscreen in time and wear sunscreen products. At the same time, in the Millennium season, the temperature difference became larger, and with the arrival of winter wind, the climate began to become dry. People should pay attention to skin moisturizing in time, eat more moist foods in their diet, such as duck meat and honey, and can't eat too greasy food. Diet should be light.