Guangwu Mountain Weather Forecast for May 12th and 13th

You can check the weather forecast online to understand the reasons for the formation of haze. We cannot change nature, but we can change our own behavior. Everyone is responsible for protecting the environment.

Human factors

Sources of toxic particulate matter in cities:

First: it is car exhaust. Large vehicles using diesel are "heavy offenders" of PM10 emissions, including large buses, shuttle buses of various units, and large transport trucks. Sources of toxic particulate matter in cities: First, car exhaust. Diesel vehicles are "heavy offenders" of emitting fine particulate matter. Although small cars using gasoline emit gaseous pollutants, such as nitrogen oxides, they can easily be converted into secondary particulate pollutants in foggy weather, aggravating smog.

Motor vehicle exhaust is the main component of smog particles. The latest data shows that motor vehicle exhaust accounts for 22.2% of Beijing’s haze particles, coal burning accounts for 16.7%, and dust accounts for 16.3%. Industry accounts for 15.7%. However, with the advancement of automobile technology and the improvement of oil quality, environmental managers have found that vehicle exhaust does not play a decisive role in the formation of haze weather. However, as some cities with a large number of cars, managers still need to control vehicle emissions. standards to avoid the formation of haze weather.

Second: The waste gas produced by burning coal for heating in winter in the north.

Third: Waste gas emitted from industrial production. For example, metallurgy, kilns and boilers, mechanical and electrical manufacturing, as well as a large number of exhaust gases emitted from the combustion of kilns for auto repair painting and building materials production.

Fourth: Dust generated by construction sites and road traffic.

Fifth: The particle size of growable particles, bacteria and viruses is equivalent to PM0.1-PM2.5. When the humidity and temperature in the air are suitable, microorganisms will adhere to the particles, especially oil smoke. On particulate matter, microorganisms absorb oil droplets and transform into more microorganisms, causing the growth of biological toxic substances in the haze to increase.

Sixth, dust "haze" will also be produced during home decoration. The dust in the room is not only harmful to the health of workers and users, but also increases the burden of cleaning. When the dust is serious, it will also bring many hidden dangers to the decoration project. . [4] [5]

In addition to meteorological conditions, the concentration of particulate matter (including coarse particulate matter PM10 and fine particulate matter PM2.5) in the atmosphere increases due to industrial production, motor vehicle exhaust emissions, and coal burning for heating in winter. , is an important factor in the generation of haze. Today, pollutant emission levels in many cities are at critical points and are very sensitive to meteorological conditions. Air quality can reach standards when diffusion conditions are good. Once adverse weather conditions are encountered, air quality and visibility will immediately decline.

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