Air pollution or environmental contamination is the presence of chemicals or combinations thereof at a high rate, which ínidices become harmful to health, safety of the inhabitants of the planet or for the welfare of the in the atmosphere. This contamination is also considered harmful from the point that prevents the natural development of plants and animals and their normal procreation, focusing directly on his untimely death, jeopardizing the preservation of the species.
Among the tested contaminants in the atmosphere should consider:
Chlorofluorocarbons, called CFCs, Carbon Monoxide, Carbon Dioxide, Sulfur Dioxide, methane, and ozone (when it exceeds their presence is considered normal) are the best known and most studied and influential in the atmosphere .
Rivers of ink have run explaining the harmful lead are present in high percentages of these chemicals in the Earth's surface, but the synthesis of these focuses on Glogal Warming and Climate Change.
Following the current climate changes with areas of the planet suffering drought, while others have endured floods greater than the statistically known, the poles are affected by the increase of temperature glogal which will cause a melting of the polar increasing the volume of the oceans controls atmospheric composition are widening for the purpose of measuring it in more detail and measure the results of preventive actions that are performed.
Controls air composition of the atmosphere, takes place both at the Planet through a protocol samples taken in different places by voluntary agencies and environmentalists, as well as spatial level (10 km troposferea. Of estratófera surface and up to 50 kms) through aerostráticos balloons, satellites specialized.
The World Meteorological Organization (WMO) is coordinating the measures that contribute to the assessment of climate change developed by the Intergovernmental Panel on Climate Change (IPCC) . This group of experts formed by the UN, issues reports and technical assessments based on measurements and other scientific data related.
A range of international satellite measurements complements on the surface. The Atmospheric Infrared Sounder (AIRS) and the Tropospheric Emission Spectrometer (TES) from NASA, along with the satellite program Infrared Atmospheric Sounding Interferometer in France (IASI) use a process called thermal emission for measurements in the troposphere, a few miles above Earth.
Those interested in having updated information on the status of the air composition of the atmosphere, and have the same evolution graphs, can be found at the site of the European Agency EEA , which are displayed as an ordinary citizen can understand this important situation .