When did the smog start to be strange?

I can't see the sun in the spring, and I have already begun to get used to the haze when I wake up in the morning when it is foggy, and I am no longer unfamiliar with it.

Even from every time I go out and see the car exhaust and smog mixed together, I can't just see the blue sky.

When you look at the stars and the moon from the sky, and when you look at the world from the window every day, it's not the world, but a foggy light.

When I was looking at the weather forecast, and then every day when the family didn't let me go out to play, I started to get used to the haze.

It is when you have to go out with a mask every day and basically dare not breathe air outside, and there are humidifiers and air filters everywhere in your home.

Since it appeared on the weather forecast, I have become accustomed to seeing it every day and then wearing a mask when I go out.

When I was in elementary school, my mom came to pick me up every day, and I was at school and at home every day, and I didn't really go out to play much that year.

We are at home, we are by the river, when we were young and looked at the big chimneys on the other side of the river, and when it was black smoke every day, we have begun to get used to this heavily polluted city.

I've been like that in the winter since I was in middle school (early 20000). And the smell of soot was much heavier than in recent years.

At that time, I really noticed him when I watched the documentary made by Chai Jing, and now I am used to it, and I have never been surprised.

There is a lot of rain in summer, and when the weather gets cooler in autumn and winter, it is easy to fog up, and high-rise buildings are too tight to obstruct air circulation. Rural people have never seen the world, don't blame you for being wrong...

Since 2007, I thought that we began to pay strict attention to environmental protection, and in the past 11 years, it has become even more powerful.

Because there is nothing that can be done, only the fittest can survive. Nature is still difficult to protect itself, and tears and life wither.

Every morning when you can't see the sun.

When I have to face smog every day, I feel that it is a strange thing.

Let me talk about Beijing, Beijing can really basically say that the smog has disappeared now, and I feel the importance of the environment.

When I was a child, on the hillside, in the meadow, all kinds of grasshoppers, one by one. Now there is no hair.,I can still see a praying mantis occasionally.。。

Ever since cars were running all over the streets, the air has been grayish-blue all day long.

Ever since South Korea said that South Korea's smog drifted over from China.

Mining disasters, landslides, mudslides, landslides, fires, floods, ......It's no wonder. Do you still talk about smog in the old yellow calendar?

It's not that it's weird, it's helpless!

My heart is numb, and I get used to it.

It's been a long time since I've seen a rainbow.

It's been ten years, and I can't wait for the blue sky. Natural selection, survival of the fittest, had to adapt to it.

Smog is less of a problem than other disasters.

It's not that it's not weird, it's insensitive, helpless.

My nose and lungs were numb.

Summary. Hello, Zhang Tao, chief analyst of the ** Meteorological Observatory, believes that the causes of the large-scale haze in the north are not complicated, and there are two main aspects:

First, the static weather situation has been maintained and developed, the wind is relatively small, and basically belongs to the southerly wind behind the high pressure, such a situation is conducive to the accumulation of pollutants, the diffusion conditions are not very good, the other reason is that the humidity is relatively large, the previous large range of rain and snow weather in the northern region and the intensity of the relatively large increase in the humidity near the ground layer, the current haze weather is produced under the background of such a calm weather situation and increased humidity, so the visibility presents a low level.

Hello, Zhang Tao, chief analyst of the ** Meteorological Observatory, believes that the cause of the large-scale haze in the north is not complicated, and there are two main aspects: one is that the quiet and stable weather situation has been maintained and the development of Yuandan Town, the wind is relatively small, and it is basically a southerly wind at the rear of the high pressure, which is conducive to the accumulation of pollutants, and the conditions for diffusion and dispersion are not very good, and the other reason is that the humidity is relatively large. The previous large-scale and relatively strong rain and snow weather in the northern region brought a very large increase in the humidity near the ground layer, and the current haze weather is produced under the background of such a calm weather situation and increased humidity, so the visibility is at a low level.

According to the forecast of the Meteorological Bureau, the haze weather in the region will stop due to the possibility of winds in the near future.

What number is lifted. The specific lifting time should be based on the air quality measurement results.

Hebei's steel output in the past ten years: in 1999, steel output exceeded 10 million tons for the first time, 20 million tons in 2002, 50 million tons in 2004, and 70 million tons in 2005100 million tons in 2013. This year, Hebei Province will only close 15 million tons of production capacity.

Based on this, let's calculate the corresponding particulate matter emission pollution:

100 million tons of steel production, consumption of 100 million tons of standard coal. According to the national standard, the dust emission per kilogram of standard coal is 75 grams, according to which the dust emission is 7.74 million tons, and the average is 10,000 tons per day. The total area of Beijing-Tianjin-Hebei is 10,000 square kilometers, equivalent to 813 kilograms of dust per square kilometer per day.

Assuming that the dust spreads to an altitude of 1 km, the dust per cubic meter is 813 milligrams, of which 7 percent, or 569 milligrams per cubic meter, is the PM index of 569.

By way of comparison, the country's annual gasoline consumption in 2013 was 100 million tons (not quite accurate), accounting for 124.1 billion liters at 93. According to the average vehicle 100 kilometers 8 liters of oil, the implementation of the 2004 vehicle emission standards (grams of particulate matter kilometers), the annual emission of 124.1 billion grams, that is, 10,000 tons. As of 2013, the country has 100 million cars, including 5 million in Beijing, 2 million in Tianjin, and 15 million in Hebei, accounting for 16% of the country, and the annual particulate matter emissions due to burning gasoline do not exceed 20,000 tons.

Conclusion: 1. According to the current steel output in Hebei, it should explode every day. Explosion is inevitable, non-explosion is accidental.

The causes of haze weather are complex, and there are generally the following reasons:

Terrain restrictions. Because haze tends to settle low, particulate matter tends to accumulate most easily in basins, valleys, low-altitude plains, and at the foot of windward leeward mountains. Almost all of the major smog areas in the country listed below are related to the topography.

Weather. In addition to the windless and calm weather, the formation of an inversion layer is not conducive to the spread of haze. In general, due to solar radiation, the closer to the surface the higher the air temperature, the upward convection of hot air, which speeds up the air flow.

In some cases, such as early in the morning, after snowfall, and foggy weather, the surface temperature is often lower than that of the upper altitude, and the cold air is on the top and the hot air is on top, and the atmosphere is in a stable state, which is the cause of the inversion layer.

The truth is that people burn coal and firewood for cooking and heating. Farmers burn straw. Set off fireworks. It has nothing to do with the exhaust of the car.

Smog is actually a type of urban disease.

Human emissions are the main cause, and climate factors are the auxiliary exacerbating factor.

The main causes include corporate emissions, residential emissions, and pollution factors are all concentrated in large urban areas.

Controlling smog is actually a lack of urban management.

More people are coming together, and the emissions produced are beyond the ability of the environment to purify itself. Man and nature are out of balance.

When the environment is not enough to be purified, human intervention is required to pay a certain cost for urbanization.

God is furious, there are no winners for participants who do not follow the rules. The poor are the victims, as are the rich and powerful.

The truth is petrochemical, chemical, coal, not barbecue.

The main thing is that the winter is warm, and there is no northwest wind every day.

Natural phenomena do not have to worry about themselves.

There is a lack of scientific evidence in all aspects of development. No matter how much construction can have an impact on the environment. You can't rush it all at once.

Smog should not make the weak small and micro enterprises and vulnerable groups pay.

The root cause of smog is the increase in human activities

The truth of smog is that the problem of the sun's change is something that has to do with the eyes.

It seems that the sea of clouds is related to the burning of straw in the countryside.

If there is no wind, the air does not flow, and exhaust equipment should be installed on both sides of the urban road and at the air outlet.

The biggest factor of smog is the geographical factor, and the other factors are some auxiliary factors, or will exacerbate the degree of smog and haze, and are not the decisive factors that constitute smog and haze!

Logically speaking, there are no effective measures to curb and reverse, and the logical long-term pollution will become more and more serious

The process that the history of world industrial development must go through is particularly prominent in developing countries.

Internationally, London was famous for its smog more than 100 years ago. The industrialization of BAI has caused pollution to DU.

Zhi continued for 200 years. It is mentioned in many literary works, such as the Orphan of the Fog Capital, Sherlock Holmes, and the like.

In China, it began to be mentioned in the last 10 years, and social concern began at the end of 2011. Due to Beijing's persistent visibility smog, the U.S. Embassy's air pollution information has left Beijing's environmental protection authorities with a gloomy face, causing public concern.

What exactly is smog?

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.

**Zhang Tao, chief analyst of the Meteorological Observatory, believes that the cause of the large-scale haze in the north is not complicated, and there are two main aspects: first, the quiet and stable weather situation has been maintained and developed, the wind is relatively small, and it is basically a southerly wind behind the high pressure, which is conducive to the accumulation of pollutants, and the diffusion conditions are not very good, and the other reason is that the humidity is relatively large. The current haze is produced against the backdrop of such a calm weather situation and increased humidity, so visibility is low.

Zhang Tao said that starting on the 17th, with the arrival of a strong cold air, the haze will completely end, and on the 14th, the haze in North China, Northeast China, and Huanghuai will reach the strongest this time.

Zhang Tao**, on the 12th, 13th, and 14th, the haze in the entire North China region was in a stage of steady aggravation, and the strongest time may appear on the 14th. From the 15th, there is a wave of cold air from the northeast path to the south, mainly from the northeast of North China, which will weaken the haze in North China on the 15th, and some areas, especially the northern region, may dissipate a little, but it will deteriorate again on the 16th, but it will not deteriorate to the level before the 14th. By the 17th, a stronger cold air will come down from the northeast track, which will eliminate the haze in the entire central and eastern regions.

Smog is more common in winter or spring.

Haze, as the name suggests, is a combination of fog and haze. But there is a big difference between fog and haze. The aerosol system composed of dust, sulfuric acid, nitric acid and other particles in the air causes haze in the visual panicle disorder.

Haze is haze. Haze weather is a state of air pollution, haze is a general expression of the content of various suspended particulate matter in the atmosphere exceeds the standard, especially the aerodynamic equivalent diameter of particulate matter less than or equal to 2.5 microns is considered to be the culprit of haze weather. With the deterioration of air quality, the phenomenon of haze weather has increased, and the harm has increased.

In many parts of China, haze weather phenomena are combined with fog as early warning and forecasting of severe weather. Collectively known as haze weather.

In recent years, the smog in many cities has become more and more serious, and the generation of smog also means that air pollution is serious. Haze, as the name suggests, is fog and haze, and haze weather is a state of air pollution. So do you know how smog is formed?

How smog is formed.

The formation of haze has both "source" and "**", which is not conducive to the meteorological conditions of pollutant diffusion, once pollutants accumulate in static meteorological conditions for a long time, it is easy to form haze weather. Smog comes from a variety of sources, such as vehicle exhaust, industrial emissions, construction dust, garbage incineration, and even volcanic eruptions. There are three elements to smog formation:

The first is the physical base source for the generation of granular dust. China has the world's largest Loess Plateau region, and the soil texture of Luqi is the most prone to the formation of particulate dust particles. Clever and carrying.

The second is the dust caused by poor movement. For example, if mud flows onto the road after rain or splashing water on the flower beds in the middle of the road and on the corner of the street, after an hour of drying, it will be spun by the wheels and cause a lot of dust, and even if the particulate matter falls back to the ground, it will be thrown over the city again because cars continue to drive by.

Third, the dust-based source and the motion difference process are concentrated in a certain spatial range, and the particles eventually accumulate with the water molecule nodules to form haze. At present, among the more than 350 cities in the Loess Plateau region of China, the stock of the three elements of haze structure is quite abundant.