Causes and countermeasures of haze weather in Shijiazhuang

Fog is an aerosol system consisting of a large number of tiny water droplets or ice crystals suspended in the air near the ground, and it is the product of water vapor condensation (or sublimation) in the air near the ground. We call the weather phenomenon of water vapor condensation (or condensation) suspended in the air near the ground fog; Haze is composed of particles such as dust, sulfuric acid, nitric acid and organic hydrocarbons in the air. The visual range obstacle caused by this non-aqueous aerosol system is called Haze or dust, and the Hong Kong Observatory calls Dust-Haze.

the formation of haze is mainly the result of a large number of particles suspended in the air and meteorological conditions. There are three causes:

-the phenomenon of still wind increases in the horizontal direction. The higher the building is built in the city, the blocking and friction will obviously weaken the airflow when passing through the urban area. The increase of static wind phenomenon is not conducive to the diffusion and dilution of suspended particles in the atmosphere, and it is easy to accumulate around urban areas and suburbs;

—— There is an inversion in the vertical direction. The inversion layer is like a pot cover over a city. This inversion phenomenon, in which the air temperature at high altitude is higher than that at low altitude, restricts the vertical movement of the air at low altitude, making it difficult for suspended particles in the air to drift to high altitude and be blocked at low altitude and near the ground.

-the increase of suspended particles in the air. With the growth of urban population and industrial development, the number of motor vehicles has soared, and the emission of pollutants and suspended solids have increased greatly, which directly leads to the decrease of visibility.

In fact, dust "smog" will also occur in home decoration, and the indoor dust will be pervasive, which is not only harmful to the health of workers and users, but also increases the cleaning burden. When the dust is serious, it will also bring many hidden dangers to the decoration project.

Self-protection

1. It is less necessary to open windows in foggy weather.

It is better to wait for the sun to come out before opening windows for ventilation.

2. Wear a mask when going out

You can wear a mask when going out, which can effectively prevent dust particles from entering the body. Cotton masks are the best because some people are allergic to non-woven fabrics, while cotton masks are generally not allergic and easy to clean. When you come back from going out, you should wash your face and bare skin immediately.

3. Drink more Tongplatycodon grandiflorum tea

Tongplatycodon grandiflorum tea has the function of clearing fire and filtering lung dust, which can effectively help the human body to expel PM2.5 particles and other harmful substances accumulated in the body. For details, please refer to Baidu Encyclopedia of Tongplatycodon grandiflorum Tea.

4. Appropriate vitamin D supplementation

In winter, there is more fog and less sunshine. Due to insufficient ultraviolet radiation, vitamin D production in the human body is insufficient, and some people may feel lazy and depressed. If necessary, some vitamin D can be supplemented.

5. Eat light and drink plenty of water

In foggy days, you should choose light and digestible foods rich in vitamins, drink plenty of water and eat more fresh vegetables and fruits, which can not only supplement various vitamins and inorganic salts, but also play the roles of moistening the lungs, eliminating phlegm and relieving cough, strengthening the spleen and tonifying the kidney. Eat less irritating food, and eat more foods such as pears, loquats, oranges, oranges, etc.