What's the difference between smog and dusty weather?

Dust and fog weather and smog are common meteorological phenomena, but their essence and causes are different. The specific differences are as follows:

The reasons for the formation of 1. are different: dusty weather is formed by a large number of particles suspended in the air, such as dust, aerosol and smoke, and usually appears in dry and windy weather. Haze is caused by the accumulation of particulate matter and harmful gases (such as sulfur dioxide and nitrogen oxides). ) appears in the atmosphere under certain meteorological conditions, usually in wet and windy weather.

2. Different shapes: the shapes of dust and fog are mostly grayish yellow, because the particles suspended in the air are large; The color of smog is mostly grayish white or yellowish, because the particles in it are small.

3. Different impacts on human health: Although dust and foggy weather will have a certain impact on human health, the harm to human body is relatively small because of its large particles, which are not easy to enter the deep respiratory tract of human body. Fine particles and harmful gases in smog can enter the deep respiratory tract of human body, which is harmful to human health and easily leads to respiratory diseases and cardiovascular diseases.

4. Different protective measures: In dusty and foggy days, people can reduce the impact on health by wearing masks and reducing outdoor activities; In foggy weather, due to the great harm to health, stricter protective measures are needed, such as wearing professional protective masks, reducing outdoor activities and increasing indoor ventilation.

Generally speaking, there are some differences between dust and fog weather and smog in the causes, forms, effects on human health and protective measures, which need scientific protection and response according to different meteorological conditions and conditions.