The Sahara desert can scorch people during the day, why can it reach sub-zero temperature at night?

? What does the Sahara desert mean in Arabic? The great desert? This is the most sunny place in the world, and it is also one of the most unsuitable places for biological growth on earth. The Sahara desert is formed by two climates, namely, the arid subtropical climate in the north and the arid tropical climate in the south. They are characterized by large annual and daily climate changes, which are similar to those in Xinjiang, China. Wear leather in the morning and wool in the afternoon? This metaphor.

? How did this reason come about? Let's learn together that precipitation is one of the influencing factors. The annual average daily climate is about 20 degrees, and the average winter temperature is 13 degrees. The weather is hot in early summer, with the highest temperature reaching a record 58 degrees. The annual precipitation is 76%. Although the rainfall changes greatly, most of it occurs during the period of 65438+February-March. Heavy rain will lead to huge flash floods and rush into areas where there is no rain. The characteristics of arid tropical climate are that with the change of the position of the sun, the annual temperature cycle is strong; Mild and dry winter and hot and dry season are followed by changeable summer rain. The annual average daily temperature difference in the arid tropical region of the Sahara desert is 17.5℃(3 1.5℉). ? The cold canary airflow on the western edge of the desert reduces the temperature, thus reducing the convective rain, but sometimes fog appears when the humidity increases. Winter in the south of the Sahara desert is a period when Hamdan wind blows, which is a dry northeast wind with sand and other small dust particles. ?

? ? For a long time, the Sahara desert has been like a natural barrier, which hinders travelers from further exploration. Nowadays, several routes across the desert have been opened one after another, making the dreams of adventurers come true. Traveling in the desert is a physical and intellectual challenge to people, but it is strange and exciting: traveling in the endless desert, away from the noise of the city. This is one of the 10 wonderful journeys in the world.