What does clear weather mean and what season it means?

The meaning of clear sky and clear air: describes the clear sky and fresh air; refers to the Autumn Festival.

Sentences:

1. The weather is clear and clear after the rain.

2. After the storm, the sky is clear and clear at dawn.

3. In the morning of this day, the sky was clear and the air was clear, and the wind was gentle and gentle.

4. It was a clear and clear autumn evening.

5. When the wind is gentle and the sun is shining, the sky is clear and the air is clear.

6. The sky is clear and clear today, and many elderly people are out for a walk.

7. The sky is clear and clear today. It is a good time to travel.

The most obvious change in autumn is in the trees. Cities begin to clear away a large number of fallen leaves, and mountains are flooded with tourists watching the red maples. The parking lot of the Algonquin Visitor Center is surrounded by red leaves. Be sure to go inside the visitor center. There is a free exhibition in the hall, which introduces the history and environment of Algonquin. The animal models are very lifelike. There is a viewing platform behind the visitor center. On the platform Telescopes are free to use and you can clearly see the red leaves on the mountain opposite.

The main meteorological disasters in autumn include: autumn rain in West China, cold dew wind in the south, frost and low temperature damage. West China Autumn Rain is a special weather phenomenon with rainy autumn in West China. It is mainly found in Sichuan, Chongqing, the Wei River Basin (southern Gansu and central and southern Shaanxi), the Han River Basin (southern Shaanxi and central and western Hubei), eastern Yunnan, Guizhou and other places. Among them, it is most common in the Sichuan Basin, the mountains of southwestern Sichuan, and the western and northern parts of Guizhou.

In autumn, the direct sun point gradually moves southward from the northern hemisphere. After the autumnal equinox, it crosses the equator and the sun shines directly on the southern hemisphere. Geographical significance 1. The movement of the direct sun point causes changes in global heat distribution. 2. The seasonal movement of the sun's direct irradiation point drives the north-south shift of the planetary system. Direct sun point 3. The seasonal movement of the direct sun point causes changes in the length of day and night and the height of the sun at noon.