What is the cause of sandstorm?

1. natural factors: when the weather is dry and there is little rain, the convective cells in front of the ground cold front develop into clouds, which is beneficial to the occurrence of sandstorms. In addition, narrow terrain conditions are also important conditions for sandstorms;

2. Environmental factors: Soil weathering is also an important condition for sandstorms. When the soil gradually turns into fine sand, there will be sandstorms. In addition, the water content of soil will also affect the occurrence of sandstorms.

3. Human factors: The occurrence of sandstorms is not only the product of specific natural environmental conditions, but also has a corresponding relationship with human activities. Man-made overgrazing, deforestation, industrial and mining traffic construction, especially man-made overgrazing, destroyed the ground vegetation, disturbed the ground structure, formed a large area of sandy land, and directly accelerated the formation and development of sandstorms.

4. Meteorological factors: The formation of sandstorms is based on the special atmospheric circulation in East Asia, which is closely related to winter winds. Its occurrence is mainly related to the cold front transit driven by Siberia and Mongolia high pressure in winter, which belongs to cold front sandstorm.

Sandstorm refers to the weather phenomenon that strong winds blow up dust on the ground, making the air very turbid and the horizontal visibility less than 1km. Sandstorm is a weather phenomenon in wind erosion and desertification, and its formation is influenced by both natural factors and human activities. Natural factors include strong wind, decreased precipitation and its sand source. Human activity factor refers to the increase of sandstorm frequency after vegetation destruction in the process of economic development.

Sandstorm is a weather phenomenon in which wind and sand interact with each other, that is, the visibility of the atmosphere drops sharply due to the strong wind blowing up the dust on the ground. There are many reasons for the formation of sandstorms, both natural and artificial. Among them, over-exploitation of natural resources, over-logging and over-reclamation caused by population expansion are the main reasons for the formation of sandstorms, which increase the intensity and frequency of sandstorms.