What are the causes of sandstorms in Beijing?

Sandstorm is a general term for sandstorm and sandstorm. It refers to a severe sandstorm weather phenomenon in which strong winds blow and drag a large amount of sand and dust on the ground into the air, making the air particularly turbid and the horizontal visibility less than one kilometer. Among them, sandstorm refers to a sand-laden storm formed by strong winds blowing a large number of sand near the ground; Sandstorm is a storm formed by strong winds, which brings a lot of dust and other particles into the sky.

How are sandstorms formed in Beijing?

Causes of sandstorms in Beijing: There are three transmission paths for sandstorms to enter Beijing: North Road, Northwest Road and West Road. According to the data, the North Road runs from Erenhot, Hunshandake Sandy Land, Zhu Rihe and Siziwangqi in Inner Mongolia, passing through Huade, Zhangbei, Zhangjiakou and Xuanhua, and directly to Beijing. The transmission path of Northwest Road is the Alashan-China border, south of Helan Mountain, north to Mu Us Sandy Land, Wulanbuhe Desert, Hohhot, Datong and Zhangjiakou, and straight into Beijing. The source of the West Road is Hami and Mangya. The sandstorm passes through Hexi Corridor, Yinchuan and xi 'an, passes through Datong and Taiyuan, and finally lands in Beijing. According to the composition of sand and dust, the sand and dust weather in Beijing can be divided into four types: mixed high-altitude transmission of ground sand and dust (accounting for 40% of Beijing's sand and dust weather), subsidence high-altitude transmission (accounting for 40%), ground sand and dust (accounting for 13%) and transit high-altitude transmission (accounting for 7%).

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