What are the main effects of aerosols on urban air?

Compared with clean areas, the change of aerosol in cities is mainly due to the increase of the content of aerosol PM2.5 or PM 10 or the fact that its components contain more chemicals. These changes will have an impact on the city, and many of them need further study. Aerosol has an important influence on the atmosphere and the whole world.

1. The impact of aerosol direct radiation forcing on the weather is mainly to reduce visibility, which is manifested as sandstorms and more and more gray weather in urban areas with high air pollutant concentration.

2. A large increase in PM2.5 will do great harm to the human respiratory system and increase respiratory diseases.

3. Affect the ambient temperature and plant growth rate.

4. Affect clouds and precipitation.

5. Affect climate change.