Climatic characteristics of the first frost

The first frost solar terms are characterized by cold weather in the morning and evening, hot weather at noon, large temperature difference between day and night, and obvious autumn dryness. The relevant explanations are as follows:

1, the weather is cold in the morning and evening: during the first frost solar term, the weather will get cold in the morning and evening due to the gradual decrease of temperature. This is because the direct angle of the sun gradually decreases, and the solar radiation energy received during the day gradually decreases, while the energy lost at night is more. So the temperature difference between morning and evening is large, and the temperature drops gradually.

2. Hot at noon: Although it is cold in the morning and evening of the first frost solar terms, the temperature at noon is relatively high, and sometimes it even feels hot. This is because during the first frost solar term, the direct angle of the sun gradually decreases, but at noon, the height angle of the sun is larger, and the sun shines directly on the ground, and the ground receives more solar radiation energy, so the temperature at noon is relatively high.

3. Large temperature difference between day and night: During the first frost solar term, the temperature difference between day and night is large due to the gradual decrease of temperature. This is because during the first frost solar term, less solar radiation energy is received during the day and more energy is lost at night, so the temperature difference between day and night is large. This is also one of the characteristics of the first frost solar terms.

4. Autumn dryness is obvious: after the first frost solar terms, the scene of late autumn becomes more and more obvious, the air humidity gradually decreases, and the climate becomes dry, which is prone to symptoms such as dry skin, dry mouth and cough. This is because the moisture in the air is reduced and the humidity is reduced, which leads to the rapid loss of water in the human body and is prone to dry symptoms. During the first frost solar term, we should pay attention to keep indoor humidity, drink plenty of water and keep our skin moist.

Precautions for dressing in the first frost solar terms

1. Keep warm: During the first frost solar term, the temperature gradually drops, and it gets cold in the morning and evening. So it is necessary to wear clothes to keep warm. You can choose some thicker clothes, such as sweaters and coats, to keep your body temperature. At the same time, you can also choose some warm shoes and socks to increase the warmth of your feet.

2. avoid wearing too thick clothes: although the temperature of the first frost is gradually decreasing, the temperature is still high at noon. If you wear too thick clothes, people will feel stuffy. Therefore, when choosing clothes, you can choose some light, breathable and warm clothes, such as down jackets and thermal underwear.

3. Pay attention to collocation: you need to pay attention to collocation when wearing clothes in the first frost. You can choose some clothes with bright colors and simple styles, such as red, yellow and blue, which can increase people's vitality. At the same time, you can also choose some high collars, scarves, hats, etc. to increase the sense of warmth and fashion.