What is the cause of such a severe smog?

In recent years, there has been a high frequency of haze weather in China, so what is the cause of haze? What are the hazards of haze weather? Let's learn about it!

What causes smog? The main cause of smog is the increasing air pollution. Causes diseases such as acute rhinitis and acute bronchitis.

For patients with chronic respiratory diseases such as bronchial asthma, chronic bronchitis, obstructive emphysema, and lung disease, hazy weather can lead to acute attacks or exacerbations. If you stay in this environment for a long time, it can also induce lung cancer. 2. Impact on the cardiovascular system.

There are many pollutants in the air and low air pressure on hazy days, which can easily induce acute attacks of cardiovascular diseases. For example, when the fog is heavy, the water vapor content is very high, and if people are outdoors and exercise, the body's sweat is not easy to discharge, causing chest tightness and increased blood pressure. 3. Haze weather can also lead to the weakening of ultraviolet rays near the ground, the enhancement of the activity of infectious bacteria in the air, and the increase of infectious diseases.

4. Because of the reduction of sunlight in foggy days, children have less ultraviolet radiation, insufficient vitamin D production in the body, and insufficient absorption of calcium, which will seriously lead to deformities in infants and slow growth in children. 5. Affect mental health. The gloomy haze weather, weak light, and low pressure can easily make people feel lazy, depressed, pessimistic, and when things don't go their way, they can easily get out of control.

6. Affect traffic safety. In hazy weather, the visibility is low and the air quality is poor, which is easy to cause traffic jams and traffic accidents.

The reasons for the formation of haze are as follows: 1. The ground is dusty; 2. Accumulation of small particles in the air; 3. Caused by automobile exhaust and air exhaust emissions.

In winter, there will be smog in many cities, which causes a lot of inconvenience to people's travel. So what are the causes of smog? Let's give you a specific introduction.

01 The relative humidity of the air near the ground in the area is relatively large, and the dust shed on the ground is large, and the people and vehicles on the ground stir up the dust.

02 There is no obvious cold air activity, the wind is small, and the atmosphere is relatively stable, because the air does not flow, so that the tiny particles in the air accumulate and float in the air.

03 The sky is clear and cloudless, which is conducive to radiative cooling at night, so that the air near the ground, which is relatively humid, is full and condenses to form fog.

04 Vehicle exhaust is the main pollutant emission, in recent years, there are more and more cars in the city, and the emission of car exhaust is a factor in the haze of fog chain He.

05 The secondary pollution created by the factory emits a large amount of solid waste into the atmosphere.

Causes of haze: 1. The main factor of haze is that the air does not flow or the flow of those who burn early. 2. A large amount of polluted exhaust gas emitted by the factory smoke ruler cylinder, and the haze can be summed up in one sentence, that is, air pollution.

3. Automobile exhaust emissions. 4. The humidity in the air is too low.

1. The main factor of smog is that the air does not flow or flows poorly. The air does not flow, allowing tiny particles to collect in the air. That's why the cold air haze dissipates as soon as it happens.

2. A large amount of polluted exhaust gas emitted by the factory chimney, and the haze can be summed up in one sentence: air pollution! The main polluters used to be these heavy industries.

3. Automobile exhaust emissions. I don't know if you have noticed, there are more and more cars in the city, which can be seen from the number of parking spaces.

4. The humidity in the air is too low, and the movement of people and cars will bring up dust on the ground, which is a lot in the construction site.

In previous years, in autumn and winter, haze weather will always occur frequently, and the intensity of cold air activities affecting Nanjing, including the middle and lower reaches of the Yangtze River, is relatively weak, the atmosphere tends to be relatively static, and the horizontal and vertical diffusion conditions are relatively poor. Pollutants accumulate in the atmosphere and are difficult to self-clean or remove in a short period of time.

The main reason is the current automobile exhaust emissions, serious industrial exhaust pollution and the need for heating in the northern region in autumn and winter, a large amount of coal burning makes the air deteriorate, with the increasing attention of people, some scientific research institutes, science and technology enterprises have also begun to intervene, and linked to the environmental protection department. In the eastern suburbs of Nanjing, there is a data cloud monitoring platform, which city in the country has the highest concentration and which city is the lowest, and you can know it in real time.

The reason for the severity of smog is that due to industrial reasons, the industrial exhaust gas is more serious, and there is no good discharge, so many small particles are suspended in the air, forming haze.

There are too many industrial exhaust gases, the surrounding terrain is closed, the wind is small, it is not conducive to the dispersion of solid dust and fine particles, and the temperature is low, which is easy to condense.

The main thing is the pollution of heavy industry

Citizens' awareness of polluting enterprises is simply insufficient, and in the final analysis, it is the responsibility of the best cadres in the one-sided pursuit of economic development in the cadre assessment mechanism, and they do not care about environmental problems at all.

Some articles say that it is car exhaust emissions, I really want to ask? How many times more cars in Tokyo and New York than we do, why don't people have smog?

The newspaper said that it was caused by fireworks.

Fog is actually a non-toxic and harmless natural phenomenon, and the formation of haze is mainly the result of a large number of particles suspended in the air and meteorological conditions. Haze is often accompanied by haze, which occurs at the same time, and conditions such as water vapor, static wind, temperature inversion, and condensation nuclei are indispensable.

Sulphur dioxide, nitrogen oxides and inhalable particulate matter are the main components of smog. The first two are gaseous pollutants that combine with the fog to make the sky gray in an instant.

In recent years, the smog in the central and eastern parts of China has become increasingly serious, mainly caused by the significant increase in man-made emissions of atmospheric aerosols, including the familiar ones, which are no longer completely natural phenomena.

The serious reason is that the exhaust vapor emitted by the car and so on are not a single reason.

Air pollution is too bad.

Because of the new indicators.

<> haze is a kind of pollution to the atmosphere, especially those objects with a diameter of less than microns are the "culprits" of haze weather, now there are more and more haze weather, and the harm is increasing, many areas in China have incorporated haze weather into the weather forecast, giving people an early warning role.

Smog has existed since ancient times, and it is seasonal, it is naturally formed, not people can cure it, do not violate the laws of nature, destroy the laws of nature, human beings will be punished by nature.

Cities are too clustered, buildings are high, and industrial layouts are unreasonable. As a result, the wind is not smooth, and there is no way to blow away the pollution. Now we have one of the highest car ownership in the world, and the overly narrow city streets lead to vehicle congestion and concentrated exhaust emissions.

The city should be enlarged and flattened. Circulate the air.

Smog is not unique to modern society, it has existed since ancient times. In ancient times, natural phenomena such as volcanic eruptions could cause haze weather. After modern human beings enter the fossil fuel era, coupled with the increase in population, the emission of waste in all aspects of life and other aspects has increased, and the number of haze weather has also increased.

1.Industrial pollution. At present, China's industrial structure is heavy, mainly relying on traditional energy consumption and heavy pollution energy, such as steel and cement industries.

2.Topographic factors. In China's inland areas, basins are the majority, resulting in pollutants that are not easy to discharge, spread, and aggravate pollution in winter.

3.Climatic reasons. In winter, the weather is stable and there are few cold winds, which leads to the accumulation of pollutants.

In the past ten years, the reason why the wind on the earth's surface is less is because there are more and more high-rise buildings, the combustion of coal and oil, so that the surface temperature is getting higher and higher, and the air pressure in various places is relatively stable, so that there is a lack of conditions for the formation of wind.

According to the analysis of meteorologists, meteorological factors are the decisive factor, once there are weather conditions that form haze, no matter how to prevent it, haze will still form. There are more cities than rural areas because high-rise buildings block the sinking of convective clouds, and the sky above the city is like a cover, and the haze is difficult to dissipate.

1.The air pressure is low, resulting in haze weather 2The ground is dusty and produces haze weather 3

The secondary pollution produced by the factory produces haze weather 4Construction dust produces haze weather 5Pollutants emitted from coal burning produce haze weather 6

Automobile exhaust emissions produce haze weather.

Because people do not protect the environment, the air is getting worse and worse. There are a lot of bad substances in the air, and smog is gradually formed.

This is because of environmental pollution and industrial exhaust emissions, which will lead to serious smog.

The reason for the appearance of haze is mainly because of the increase in automobiles, and the emission of automobile exhaust has also increased greatly, which causes the appearance of haze; In addition, in winter, more carbon dioxide is released because of heating, which is also a cause of haze; In addition, the dust on the ground is carried into the air, which also provides conditions for the generation of haze.

When the water vapor suspended in the atmosphere condenses and the visibility is less than 1,000 meters, it is called fog in meteorology. Saturation occurs when the water vapor contained in the air reaches its maximum. If there is more water vapor than the saturated amount, the excess will condense and combine with the tiny dust particles in the air to form small water droplets or ice crystals, which will be suspended in the air layer near the ground and become fog.

The cooler the temperature, the less water vapor can be contained in the air, and the more likely it is to form haze.

In hazy weather, it is suitable to use a fresh air system at home. It is to use the function of ventilation to continuously discharge the indoor dirty gas out of the room, and at the same time send the fresh air purified by the machine to the room to ensure the freshness and cleanliness of the indoor air.