How is the dusty weather formed?

The causes of sandstorm weather mainly include natural conditions, physical factors, environmental factors, human factors and meteorological factors.

1, natural conditions

The weather situation favorable to strong wind or strong wind, favorable distribution of dust sources and favorable air instability conditions are the main reasons for the formation of dust weather.

2. Physical factors

Under the extremely favorable large-scale environment, under the joint action of momentum transport and gradient deviation wind, the near-surface wind speed rises sharply, causing dust on the surface and forming sandstorm or strong sandstorm weather.

3. Environmental factors

Soil wind erosion is the primary link in the occurrence and development of sandstorms. Wind is the most direct driving force of soil, among which the nature of airflow, the magnitude of wind speed and the related conditions of wind action in soil wind erosion are the most important factors.

4. Human factors

The occurrence of sandstorm is not only the product of specific natural environmental conditions, but also has a corresponding relationship with human activities. Man-made overgrazing and deforestation have directly accelerated the formation and development of dusty weather.

5. Meteorological factors

The formation of dust weather is based on the special atmospheric circulation in East Asia, which is closely related to the winter monsoon. The occurrence of sandstorm weather is mainly related to the cold front transit driven by Siberia and Mongolia high pressure in winter, which belongs to cold front sandstorm.