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Unformatted text preview: Lesson 8 What is smog? -Its ground level ozone. Ozone can be good or bad depending on where its located. Ozone in the stratosphere protects human health and the environment, but ground-level ozone is the main harmful ingredient in smog. -Ozone is a secondary pollutant - it is not released into the atmosphere directly, but is formed by other released pollutant interaction -NO x + unburned hydrocarbons or any volatile organic compounds (VOC's) sunlight over the arrow O 3 -Smog Occurs: warm temperatures, sunlight, some form of volatile organic compound, such as gasoline or natural VOC's, NOx there are both natural and anthropologic emissions -Ozone (O 3 ) is the main component of smog. Particulates from combustion can also be present. The most dangerous smog is when both ozone and sulphate aerosols are present. -Over a 4-day period in 1952, the Killer Fog of London was probably responsible for about 3,000 or so "extra deaths" that year -A temperature inversion: This is when there is a layer of warm air acts like a lid containing pollutants...
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This note was uploaded on 03/31/2008 for the course EGEE 101 taught by Professor Mathews,jonathan during the Fall '06 term at Pennsylvania State University, University Park.
- Fall '06