Friday, February 25, 2011

NASA helps on air pollution with a map from space

Air pollution has been a serious problem since the dawn of the industrial era, but until recently the scientists did not know with certainty how dirty was air in most parts of the world.



The new paths Maps using computer models and satellite images are Dando, finally, a researchers a clearer vision of the global problem of air pollution. These Maps illustrate the spread of small particles in the world. The problem of these particles is impossible to appreciate simple way, son but in large quantities, microscopic dust can Catalonia in our lungs and reach the bloodstream (causing severe health problems as asthma and various cardiovascular disease). According to the American Heart Association in the United States occur around 60,000 deaths per year due a microscopic dust of this.


These new Maps are not based simply on satellite images. There are taken into account when looking down, l, from the perspective of a satellite is a being something like looking through a glass of dirty water. The only satellite takes a fotografi√° of sits it at the top. Then, researchers use computer models to calculate the amount of matter that total were settlements in all air we breathe.


"Now, with this map and the data set represents, epidemiologists can begin a look more closely how the exhibition a long term an inter these particles in little studied in the world - parts as rapid growth in Asia or areas in North Africa with large quantities of dust in the air - cities affect human health". Writes NASA on its website.


Until now, developing countries had not had the right tools to measure the levels of air pollution. New information can also be useful in some parts of the United States or Western Europe. Today, the air quality is measured with a small number of surface monitors. NASA hopes the Maps will be a good first step to help a better understand the dynamics of particles in the air and its impact on our health.

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