What is the symbol of sandstorm?

Visibility is obviously reduced during sand blowing, and the sky is cloudy and yellow when it appears. The north is easy to appear in spring. The wind is strong in sand-blowing weather, which affects the visibility between 1 km and1km.

As a sandstorm disaster, sand blowing does not happen in all windy places, but only in those areas with dry climate and sparse vegetation. Sand blowing mostly occurs in April-May every year. Mainly distributed in the western and northern regions, Inner Mongolia, Tibet and Xinjiang are the most serious.

Extended data

Sand blowing is caused by local or nearby dust blown by the wind, and the dust concentration in different directions is inconsistent; Most of the floating dust comes from distant dust spread by high-altitude airflow (non-local dust is blown by the wind), or from fine particles floating in the air after dust storms and sand blowing, and the dust content in all directions is relatively uniform.

The appearance of floating dust always lags behind sand blowing, that is, when floating dust appears, it must be sand blowing or sandstorm in remote or local areas. If it is local sand blowing, then the sand blowing phenomenon must have ended when floating dust is recorded.

When there is a sandstorm, the air will be quite turbid. When the vertical visibility is greatly affected, the sun appears khaki, and when the vertical visibility is slightly affected, the color of the sun changes little. The distant prospect is covered with khaki.