There are large areas of yellow sand in 12 provinces and cities in the north. How are sandstorms formed?

There is a large area of yellow sand in 12 provinces and cities in the north. There are many reasons for the formation of sandstorms. First, it needs dusty weather, and secondly, it needs strong winds. Generally, sandstorms will form in the season with less precipitation, so for most parts of our country, sandstorms usually occur in March every year. This year's sandstorm has also brought great influence to most areas of our country, so paying attention to the causes of sandstorm has a positive impact on our prevention of sandstorm. First, the emergence of dusty weather.

sandstorm, only the appearance of dust can form sandstorm weather. The influence of temperature is a big reason. Take the occurrence of this sandstorm as an example. The temperature in the northwest of Mongolia has increased by five degrees, which is even higher than that in other areas. In addition, the influence of reduced precipitation has brought great influence to sandstorms, so there is capital for rampant sand. Second, the impact of windy weather.

besides dust, there is also the influence of strong wind. The occurrence of this sandstorm was influenced by the Mongolian cyclone. The windy weather occurred in most parts of northern China, and the wind was relatively high, so it provided better dynamic and thermal conditions for the sandstorm weather. When there is wind and sand, this dusty weather is formed. When the weather is dry and windy, sandstorms can spread. Third, the role of vegetation.

vegetation plays a great role in preventing wind and fixing sand, but in the north of March, vegetation has not germinated, and its role in preventing wind and fixing sand is still weak, so sandstorms can reach the northern part of China from Mongolia, thus affecting most parts of China. This is a good explanation, why the dusty weather in China usually occurs in March. In dusty weather, you must take precautions when going out, wear a mask and protective clothing.

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