Take pictures in dusty weather

1. Floating dust: it appears when there is no wind or wind before and after the cold air passes through the border, which is caused by distant dust spread by high-altitude airflow, or caused by dust floating in the air after sand blowing or sandstorm weather;

2. The visual distance is less than 10 km, and the vertical visibility is also poor;

3. Sand blowing: The visibility is obviously reduced due to the dust raised locally or nearby, and the visual distance is generally1~10km;

4. In the northern spring and summer, cold air passes through the mirror or the air is unstable;

5. Sandstorm: The cause is similar to blowing sand, but the visibility is less than 1 km, and the wind is very strong, often accompanied by strong convection or thunderstorms;

6. The difference between floating dust and sand blowing is that sand blowing is formed by local or nearby dust being blown up, while floating dust mostly comes from far away;

7. More importantly, when blowing sand, the wind is strong, the air is unstable, and the conditions for floating dust are little or no wind;

8. The main difference between sandstorm and sand blowing is low visibility.