Traditional Culture Encyclopedia - Weather inquiry - Is smog a weather phenomenon or pure pollution? What is the reason?

Is smog a weather phenomenon or pure pollution? What is the reason?

Fog is weather and haze is caused by pollution. Therefore, smog is not a weather phenomenon, but a state of air pollution, which is a general manifestation of excessive suspended particulate matter content in the atmosphere. When the fine particles emitted by human activities exceed the capacity and carrying capacity of the atmospheric circulation, the concentration of fine particles will continue to accumulate, because if the weather conditions are relatively stable, it is easy to have a wide range of haze weather.

There are several reasons for the smog weather.

1. The main factor when the air does not flow. Because the air does not flow, the tiny particles in the air gather and float in the air.

2. The ground is dusty and the air humidity is low. People and vehicles on the ground stir up dust.

3. Automobile exhaust is the main pollutant emission. In recent years, there are more and more cars in cities, and automobile exhaust is a factor of smog.

4. Secondary pollution produced by factories.

5. CO2 and other pollutants emitted by heating in winter.