What does it mean to raise sand?

Sand blowing refers to the weather phenomenon caused by local or nearby dust being blown by the wind.

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.

According to relevant data, sand blowing is caused by local or nearby dust being blown by the wind. Visibility dropped significantly, and the sky was cloudy and yellow when it appeared. The north is easy to appear in spring. When the horizontal visibility is less than 500 meters, it belongs to seriously polluted weather.

Sandblasting record:

When recording sand blowing, the horizontal visibility should be within the range of 1.0- 10.0km, and the visibility levels in different directions are often inconsistent, sometimes having little effect on the vertical visibility. When people are outdoors, dust particles often give people a feeling of hitting their faces, and doors and windows sometimes crack. People walk against the wind, and dust and fine sand strongly stimulate people's eyes.

When recording floating dust, the horizontal visibility should be less than 10.0km, and when the visibility is less than10.0 km, the conditions should be recorded. When floating dust appears, the visibility level in all directions is basically the same, which definitely has a great influence on the vertical visibility, making the sky unclear and often making observers mistakenly think that cirrostratus exists.

When people are outdoors, small dust particles will not cause the feeling of hitting people's faces. People walk against the wind, and sand and dust have less stimulation to people's eyes.