The cause of sandstorm

The causes of sandstorms are as follows:

A dry climate

Sandstorms usually occur in dry climate conditions, which will make the soil and dust on the surface dry and easy to be blown by the wind. Dry climate is the basic condition for the formation of sandstorms. Only in a dry climate will the soil and dust on the surface become dry and easily blown away by the wind.

Second, strong winds.

The formation of sandstorms requires strong winds, usually because cold air and warm and humid air meet to form a windy area, which blows up the dust on the surface. Strong wind is one of the important factors in the formation of sandstorms. Only under the strong wind, the dust on the surface will be blown up and form a sandstorm.

Third, the terrain conditions.

Terrain conditions are also an important factor in the formation of sandstorms, such as deserts, deserts, arid areas and other terrain conditions are easy to form sandstorms. These terrain conditions are usually formed under the action of dry climate and strong wind, and the soil and dust on the surface are easily blown up by the wind, forming sandstorms.

Four. Human activities

Human activities are also one of the important factors in the formation of sandstorms, such as overgrazing, over-reclamation, over-exploitation and other activities will destroy the vegetation of the land and make the surface more vulnerable to wind. Human activities have a certain influence on the formation of sandstorms. Excessive human activities will destroy the vegetation of the land, making the surface easier to be blown up by the wind, thus forming sandstorms.

To sum up, the causes of sandstorms mainly include dry climate, strong winds, topographical conditions and human activities. Only under the combined action of these factors will sandstorms form. Therefore, in order to reduce the impact of sandstorms on human beings, we need to take a series of preventive measures, such as afforestation, land management, environmental monitoring and other measures to reduce the occurrence of sandstorms.

Expand knowledge:

Sandstorm is the general name of sandstorm and a sign of desertification. It refers to a disastrous weather phenomenon that strong winds roll up a lot of dust on the ground, making the horizontal visibility less than 1 km. It has the characteristics of suddenness and short duration, low probability and great harm.

Among them, sandstorm refers to a sand-laden storm formed by strong wind blowing a large amount of sand near the stratum; Sandstorm is a storm formed by strong winds, which brings a lot of dust and other particles into the sky. Sandstorms in China mainly occur in northern areas, among which southern Xinjiang basin, southwestern Qinghai, western Tibet, central and western Inner Mongolia and central and northern Gansu are the most frequent areas.

On 20021March 15, according to the latest satellite monitoring of the National Satellite Meteorological Center of China Meteorological Bureau, dusty weather occurred in Inner Mongolia, northern North China, western Northeast China and eastern Northwest China due to the strong wind behind the frontal cyclone cloud system.