| smog |
Smog is the brownish haze that pollutes our air, particularly over cities in the summertime. Smog can make it difficult for some people to breathe and it greatly reduces how far we can see through the air. The primary component of smog is ozone, a gas that is created when nitrogen oxides react with other chemicals in the atmosphere, especially in strong sunlight.
출처: envirocitizen.inknoise.com/cleanenergy/2005/02/14/...
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| smog |
The DETR classifies this into both winter smog and summer smog. The latter is caused by a mixture of pollutants from: i) road vehicles, ii) fuels used to provide electricity and heating in offices, factories and homes, and iii) vapours from petrol and certain industrial premises. Summer smog is formed by the action of sunlight on these pollutants which forms low-level ozone close to the ground. ...
출처: www.blonnet.com/mentor/2002/01/21/stories/20020121...
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