Sandstorm is a symbol of desertification. As one of the natural disasters in arid and semi-arid areas, it is not a modern product. Sandstorms can bring many hazards, but they also have advantages.

Sandstorm refers to the weather phenomenon that the strong wind blows up the dust and sand on the ground, making the air very turbid, and the horizontal visibility is less than 1km. Sandstorm weather mainly occurs in winter and spring. This is because there is little precipitation in the arid area in winter and spring, the surface is unusually dry and loose, and the ability to resist wind erosion is very weak. When there is strong wind, a large amount of sand and dust will be swept into the air, forming a sandstorm weather.

In China, it is also reported that there are two major sandstorm prone areas.

The first frequently occurring area is in the northwest region, which is mainly concentrated in three areas, namely, the surrounding areas of the Tarim Basin, the Turpan Hami Basin through the Hexi Corridor, the Ningxia Plain to the northern Shaanxi line, and the Alashan Plateau, Hetao Plain, and Ordos Plateau in Inner Mongolia.

The second frequent area is in North China, Chifeng and Zhangjiakou, which directly affects the security of the capital Beijing.

There are four major sandstorm prone areas in the world: North America, Oceania, Central Asia and the Middle East.

The deserts of North America are mainly distributed in the west of the United States and the north of Mexico. In the 1930s, a huge sandstorm, known as the Black Storm, occurred in the Great Plains of the western United States. The Great Plains lost 300 million tons of fertile soil.

Sandstorms are the most frequent in the central and western coastal areas of Australia.

The five countries in Central Asia are regions with serious desertification. Due to the rapid increase of population, artificial excessive irrigation water, deforestation, overgrazing, grassland degradation and desertification are very serious. The area of saline soil in Central Asia is very vast, which results in the mixed occurrence of dust storms and salt storms.

Sandstorms in the Middle East mainly occur in the southern edge of the Sahara Desert in Africa, and also affect other regions. Some sandstorms are carried across the Atlantic to the Amazon region in South America by the wind, while others are blown to Europe.

We all know that sandstorms can pollute the environment and affect production and life. It can also reduce the solar radiation on the ground, and the dust storm can also aggravate the wind erosion and desertification of the soil on the surface layer. The thick sand dust covering the plant leaves will affect the normal photosynthesis and cause the crop yield reduction. It also caused the temperature to drop sharply. The sky was like a sunshade, and the ground became dark and cold under the shadow. Affect traffic safety, endanger health, cause strong wind erosion, sand burial and other phenomena. These are the adverse effects of dust storms. Although there are many hazards of dust storms, the whole process of dust storms is also an indispensable part of the natural ecosystem.

1. The sand and dust brought by the sandstorm make up for the soil shortage in some areas to some extent.

2. Sand storms provide nutrients for plankton in some oceans.

3. Clean weather after sandstorm

The sky is the cleanest after the dust weather. The reason is that the content of calcium in the aerosol formed by sand dust is high and often contains some alkaline substances. The sand dust has a certain neutralization effect on nitrogen oxides, sulfur dioxide and other substances in the air, which can effectively reduce acid rain and soil acidification in the sand dust settlement area.

With the development of economy, more and more countries have begun to attach importance to environmental issues and have formulated stricter air quality monitoring policies. In order to effectively monitor the environment, OC-9200 Dust monitoring system can adapt to various harsh environments after generations of technological updates. In order to meet the needs of customers in various countries. It can detect air pollution (SO2, O3, NO2, CO, etc.), particulate matter of PM1, PM2.5, PM10, TSP, and meteorological parameters (temperature, humidity, wind direction, wind speed, noise, atmospheric pressure, rainfall, solar radiation). Customers can choose according to different project requirements.

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