It is generally believed that the formation of smog is mainly the result of a large number of suspended particles in the air and meteorological conditions. There are three reasons:
First, the phenomenon of static wind in the horizontal direction has increased.
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.
Second, the vertical direction is reversed.
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.
Third, the increase of suspended particles in the air.
With the growth of urban population and industrial development, the number of motor vehicles has soared, resulting in a large increase in pollutant emissions and suspended solids, which directly leads to a decline in visibility.
Fourth, wireless communication is one of the important reasons for the formation of smog.
In fact, wireless communication is the main supporter of smog particle suspension. We know that wireless propagation is the result of electromagnetic wave particles moving in all directions in space. As we all know, smog occurs in cities with high population density. Why is this? One of the reasons is wireless communication. In densely populated cities, there are many high-power electromagnetic wave generators, and almost no one has a mobile phone-a small electromagnetic wave transmitter. This will inevitably form a dense and strong electromagnetic wave network. Electromagnetic waves are moving and have the function of promoting particle movement and supporting particles. This electromagnetic wave net holds up the particles that form smog when the cold air activity is weak and the wind speed is low, thus forming smog. Taking the city as the center and far away from densely populated big cities, the density and intensity of this electromagnetic wave network are weakened, which is not enough to support the particles that form smog, so it is not easy to form smog. For example, just like the law of electric field formed by charge, the electric field far from the center of charge is weak and the acting force is weak.
PM2.5 and particles smaller than PM2.5 are one of the components of smog and are the main components that endanger people's health. Generally speaking, the density of PM2.5 particles is higher than that of air, and it should sink. The smaller the particles, the greater the density, and the particles smaller than PM2.5 should not be suspended in the air. What causes PM2.5 and particles smaller than PM2.5 to be suspended in the air? Wireless communication is one of the accomplices. It is true that the formation of smog is related to the humidity and fluidity of the air, but it is closely related to wireless communication.
The humidity of the air is generally caused by water vapor. We know that the density of water vapor is less than that of air, and the atmospheric pressure on sunny days is higher than that on cloudy days, which can also explain this objective fact from the side. Therefore, the movement of water vapor is upward, only water vapor is liquefied into small water droplets, and the movement of small water droplets is downward. It can be concluded that the humidity of the air has a double influence on the formation of smoke. When the air humidity is affected by water vapor, the role of water vapor is to hold up the particles that form smog. When the air humidity is affected by small water droplets, the small water droplets make the particles that form smog sink. It is concluded that there should be obvious changes in smog at night and during the day, but this is not the case, even if there are changes, it is not obvious. Smog often appears in densely populated large and medium-sized cities, and it weakens around the city. The disappearance of air flow smog is the result of smog particles falling to places with sparse population and weak wireless communication intensity, so we can't help but guess that the smog is most likely lifted by wireless communication, that is, the upward moving electromagnetic waves "hold" the smog particles.