From school everyone knows that the natural state of the atmosphere contains a fairly wide range of chemical elements and compounds.This is all kinds of gaseous compounds, water in the atmosphere in different states of aggregation, dust formation, plant spores, and more.In addition, in the atmosphere and find shelter numerous solids, and aerosol compounds.
as a source of pollution of the atmosphere, aerosols are formed by volcanic material, some of them has a cosmic nature.However, the main sources of production and favor human activities.A huge amount of atmospheric aerosol is formed by the accumulation of products of burning of forests, prairies, steppes, industrial and residential projects.This list, of course, makes it possible to classify all sources of pollution on the natural and those caused by human activities.They are called anthropogenic sources of air pollution.
When it comes to natural sources, it should, first of all, take into account the climatic phenomena that affect the transparency of the earth's atmosphere.For example, a significant portion of these impurities is formed by dust storms and tornadoes that often take place in the semiarid regions of the globe.During these storms, huge masses of dust rise into the air, carrying with it the so-called aeroplankton.In addition, scientists have calculated that every year in our atmosphere has supplied about two to three million tonnes of cosmic dust.Significant "zagryaznitelnym" potential natural origin, are volcanic eruptions.It is known that during the eruption of the Krakatoa volcano in Indonesia, the substance of the eruption rose with volcanic ash to a height of 24 km, and recorded in the composition of air in this region for five years.
However, if we analyze the sources of air pollution, it should be recognized that all of the above climatic phenomena, taken together, are much smaller than those that enter the atmosphere because of human economic activity.
accomplished and continued with increasing intensity of the industrial revolution, regardless of its form and content, has not led to a reduction in deforestation, plowing the land.On Earth, we have the huge scale soil erosion, deflation, which act as the main sources of air pollution of human nature.Follow the dynamics of atmospheric disasters, immediate supervisor, and often the direct organizers of which we are all, can the example of such data.During the last century the amount of dust deposits on the glaciers has increased more than 20 times.
Where are these deposits?Each student will tell you that it is - the product is precipitated from the air various harmful compounds and substances.At the present stage, when the strained energy problems, the formation of these deposits went even harder.
In addition, it is important to consider that human activities on the planet are very unevenly distributed.Consequently, the sources of air pollution located in different parts of the world.Harmful emissions that come from the powerful industrial-production zones, form the so-called "cumulative effect of pollution", the essence of which is that in some regions is already state of the atmospheric air is a direct threat to the life of not only the individual, but also of entire populationsNature.
In short, we see two main manifestations the factors of pollution of the atmospheric environment.On the one hand there is a deterioration of the general condition of the atmosphere, which is distributed equally throughout the world.Another phenomenon - is the formation of zones of high ecological risk, where accommodation is already poses a threat to people's lives.These reasons led to the designation of air pollution to global problems of our time.This, in turn, contributes to the transformation of this problem in the process of philosophy.Under this approach, the sources of air pollution have become the subject of global environmental control, which should not be limited to national and regional boundaries.