Global dimming is an environmental phenomenon is much less known, but real, comes as a result of air pollution that occurs from the burning of fossil fuels for internal combustion engines in the industry and residences.

Will collect and store the heat produced by the sun in our atmosphere, which made a kind of pollution called particulate emissions, especially sulfur dioxide, soot and ash also by the release of carbon dioxide. When these particles in the atmosphere absorb solar energy and reflect sunlight, which bound to the surface of the earth and take them into space.

Particle pollution also changes the properties of the clouds form as “brown clouds” that are more reflective and produce less precipitation than their white counterparts. The reduction in the heat reaches the earth’s surface as a result of the two methods is what the researchers called global dimming.

This phenomenon sounds like an ironic savior to climate change problems. It is believed that global dimming caused the droughts in Ethiopia in the 1970s and 80s where millions died, because the northern hemisphere oceans were not warm enough to allow rain formation.

Global dimming is also hiding the true power of global warming: This phenomenon occurs due to impurities without limits greenhouse gas emissions, rapid warming has been observed and human health has been compromised without omitting disaster ecological, as indicated by the heat wave in Europe in 2003, the thousands killed by people occupied.

How big a problem is global dimming? … According to studies done at the University of Columbia is a reduction of about 4% of the amount of solar radiation reaching the earth’s surface over a period 1961-1990, a time when the particulate emissions began to rise worldwide.

However, a 2007 study by the National Aeronautics and Space Administration (NASA) found a decreasing level of the phenomenon of global dimming since 1990, probably due to the stringent standards adopted against pollution caused by the U.S. and Europe since that time.

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