Desert climate characteristics

The desert surface is bare, the air is very dry and there is almost no water. During the day, the solar radiation is strong, and the ground temperature rises rapidly, and the temperature can reach 60 ~ 70℃. The updraft is strong, but because the air is dry, there are few clouds and little rain, only strong winds and dust. At night, the ground temperature drops extremely, even below 0℃. Therefore, the temperature varies greatly every day. Can be as high as above 50 DEG C..

The characteristics of desert climate: First, the rainfall is scarce and the climate is dry. Take the desert area of China as an example. Most of the annual rainfall is below 50- 100 mm, and the least part is below 10 mm. For example, Ruoqiang, located in the southeast of Taklimakan Desert, has an annual rainfall of only 16.9 mm, while Tuokexun County has even less rainfall of only 5.9 mm. ..

The second is windy and dusty weather. When the wind blows, the sky is full of yellow sand, the sky is dark and the quicksand is everywhere; After the wind stopped, flying sand fell to the ground, forming rows of undulating sand dunes of different sizes. The highest dune can be as high as 400 meters or more.

Thirdly, it is hot in Leng Xia in winter, and the annual range and daily range of temperature are very large. For example, in the northwest desert, the average temperature in winter is below -20℃ in 65438+1October, while the average temperature in summer and July is above 26-30℃, and the temperature is as high as 50℃ throughout the year. Compared with annual range, the daily range in desert area is larger. For example, in Turpan Basin, the extreme maximum temperature in summer reaches 82.3℃ during the day, which can be reduced to below 0℃ at night, and the daily temperature difference exceeds 80℃. Therefore, there is a saying in Turpan Basin that "fur coats are worn in the morning, wool is worn in the afternoon, and watermelons are eaten in the same stove". It can be seen that the temperature change of desert climate is the most intense and extreme among all kinds of climate in the world.