Meaning of Smog
What is Smog:
The smog It is a form of environmental pollution that affects the air. As such, it is a fog mixed with smoke, pollutants and suspended particles, typical of cities or areas of great industrial activity.
Smog originates as a consequence of a combination of factors: the presence of polluting substances in the air and anticyclonic situations, which imply that the lower layers of the air, and consequently, the densest and heaviest, stagnate and that the fog , laden with pollution, does not dissipate for a long period of time.
The word, as such, is an acronym from English made up of the words smoke, which means 'smoke', and fog, which translates 'fog'. Smog writing is also supported. However, a name that has been used to designate it in Spanish is neblumo, a tracing that would be the acronym equivalent to the original English: fog and smoke.
Causes and consequences
The main cause of smog It is the deregulated industrial activity, which does not comply with regulations or controls on the emissions of toxic gases and polluting substances into the atmosphere. In this sense, it occurs mainly in cities or areas where there is great industrial activity. However, meteorological conditions (anticyclone), climatic factors (heat, humidity) or geographical location (valleys, geographic basins, coasts), are also part of the set of factors that favor the presence of the smog.
On the other hand, its consequences are associated, above all, with health problems, mainly respiratory, since it can cause or aggravate diseases such as asthma, bronchitis, rhinitis, etc. The smog It also reduces visibility and irritates the eyes, not counting the risks of death, due to the strong toxicity of the air.
The smog Photochemical is one that occurs as a result of the confluence of a set of specific conditions: the presence in the air of nitrogen oxides and volatile organic compounds, a consequence of human activities (automotive traffic, industry), which react, catalyzed by the solar radiation, forming ozone, peroxyacyl nitrate, hydroxyl radicals, etc .; and specific weather conditions, characterized by stagnant air that prevents smog haze from dissipating. The smog Photochemical is more common in cities with hot or dry climates, close to the coast or located in wide valleys, with the presence of a huge automotive fleet, such as Mexico City, Santiago de Chile or Los Angeles. The smog Photochemical is distinguished by loading the air of cities with substances toxic to living beings and by darkening the atmosphere, staining it a reddish-brown color.
The smog Industrial is one that occurs as a result of the combination of a series of factors: the excessive emission of sulfur dioxide that reacts with atmospheric humidity and produces sulfuric acid and the stagnation of the air, caused by specific meteorological conditions that propitiate the phenomenon of anticyclone. As such, the smog Industrial is more common in regions with cold and humid climates, with the presence of strong industrial activity. To prevent this, it is advisable to impose a series of regulation and control measures on the emissions of pollutants into the atmosphere during the combustion processes in the industry.