What are the precautions in foggy days?

Now, due to the decline of environmental quality, there are more smog phenomena. Smoke will affect our health and vision. Even when driving, traffic accidents are prone to occur. Recently, the smog weather is more frequent, which also gives friends a headache. So what are the precautions in foggy days? What are the hazards of haze weather? Let's take a look.

What are the precautions in foggy days?

Be careful not to go out in foggy days. If it is a weekend, try to stay at home, because the smog contains a lot of particles, which will stick to our respiratory tract after being inhaled. Excessive inhalation of smog can lead to bronchi and pharyngitis. In particular, some elderly people who have some respiratory diseases themselves should pay attention to reducing the number of outings. If they want to go out, they are advised to wear masks.

For foggy weather, morning exercises should be prohibited. Morning exercise will accelerate the breathing of human body, which may cause people who do morning exercise to inhale more toxic gases. Moreover, the air quality in the morning is poor, and the smog weather stimulates the respiratory tract, which is easy to induce cardiovascular and cerebrovascular diseases.

After going out in foggy weather, you should wash your face, rinse your mouth and change clothes as soon as possible after you come back, which can effectively organize the floating dust stuck on your clothes and take it home. Pay more attention to diet in foggy days, drink more water every day and eat less spicy food that stimulates the stomach. In addition, the diet should be light, eat more fresh fruits and vegetables, white fungus, pears, persimmons, lilies, radishes, water chestnuts and other lung-moistening foods.

What are the hazards of haze weather?

Hazy weather will cause the following hazards to health and traffic:

1, physical injury

Because with the increasing frequency of smog weather, the incidence of some respiratory diseases also increases, because people inhale the particles in the smog unsuspecting when breathing, which also makes those viruses take advantage of it, thus triggering a series of diseases. Long-term exposure to this environment will also induce lung cancer, myocardial ischemia and injury.

Smoke contains a lot of particles. These particles, including harmful substances such as heavy metals, will cause nasal diseases such as rhinitis, pulmonary sclerosis and even lung cancer once they enter the respiratory tract and stick to the alveoli.

2. Traffic impact

Hazy weather seriously affects the sight of drivers and friends. In severe cases, the visibility may be about 50 meters. For this view, rear-end collision is very common. This will also affect the normal traffic order, causing problems such as congestion and abnormal operation.

Hazy weather has an impact on all modes of transportation. The plane can't fly normally, and the bus or train will be delayed, because it is dangerous to see the road ahead.

What are the main factors that cause smog?

I remember when I was a child, there was no smog weather, and then it slowly came into being. At that time, when this phenomenon first appeared, the relevant departments explained that it was the smoke produced by farmers burning straw. In fact, there are two main factors that cause smog, one is human factors, and the other is climate factors:

1, human factors

It is mainly the emission of automobile exhaust, so now people advocate green travel. Although it was popular to enjoy bicycles in the past, it didn't get everyone's love, which led to failure. The tail gas emitted by some cars is easily converted into secondary particulate pollutants once it encounters foggy days, which aggravates the smog. With the development of industry, some wastewater and sewage are produced, and the emission of waste gas is also increasing. There are also some dust generated by roads and dust from construction sites, which will lead to increased smog.

2. Climate factors

In the horizontal direction, the phenomenon of static wind increases. The higher the buildings are built in the city, the obstruction and friction of airflow passing through the urban area will be obviously weakened. 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 that the upper air temperature is higher than the lower air temperature limits the vertical movement of the lower air, making it difficult for suspended particles in the air to drift to the upper air and be blocked at the lower air and near the ground.

The difference between fog and haze

We usually say smog. In fact, there are differences between fog and haze, as follows:

First of all, fog and haze have different compositions. Ignoring the composition of water droplets, it is safer to love others. Then their examples vary in size. The particle size of smog is 100- 102m, which can be seen by naked eyes, while the particle size of smog is usually only 10-3- 100 m, which we can't see at all. The color of fog is mostly milky white, while the color of haze may be yellowish or orange-gray.

Fog is close to the ground, the vertical thickness may be only a few hundred meters, and the vertical height of haze can reach 1KM, or even higher. The maintenance time of fog is still short, and it will disperse soon, but it takes a long time for fog to form, which can last for several days and has a wide range of characteristics. Fog is a phenomenon of water vapor condensation, which requires high relative humidity, generally above 90%. Haze is a collection of dust particles, smoke particles or salt particles, and the relative humidity of the air is mostly below 80% when it is formed.

Preventive measures for haze weather

Because smog weather can last for several days sometimes, we can't stay indoors for several days, so we can take some measures to reduce the harm of smog to us.

1, wear a mask when going out, and wear a mask when going out in fog. Although breathing may be a little uncomfortable, it can still reduce the inhalation of smog and help us effectively prevent smog particles from entering our respiratory tract. Try to choose a mask with good dustproof performance, and don't use that kind of medical mask, which has little effect.

2. Close the doors and windows. Although ventilation is usually emphasized, doors and windows should be closed in foggy days, which can prevent the smog outside from entering the house and pollute our indoor air. When the situation is a little better, you can choose to breathe and open a crack.

3, diet attention, eat more vegetables and drink more water, supplement vitamins, drink more tea in foggy days.

Speed limit when driving, which requires high concentration. The slower the better. Pay attention to the speed and distance. Try not to run at high speed in foggy days.

The haze weather is actually caused by ourselves, especially the current economic development. Some factories do not attach importance to environmental protection, and waste gas and wastewater discharge is not managed, so the frequency of smog phenomenon increases. Only when we do our own protective measures can we reduce the harm caused by smog weather.