Transboundary air pollution

Transboundary air pollution - Transboundary Air Pollution...

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Transboundary Air Pollution a. What air contaminants have been significantly reduced? Sulphur dioxide had been significantly reduced by 86%, while carbon monoxide was reduced by 885. Nitrogen Dioxide had been reduced, by 26 %. b. Which contaminants are still an issue? The contaminants which are still an issue are; acidic deposition, ground- level ozone, fines particulate matter, the main components of smog. c. To what degree do these exceed criteria levels? After 2003 these contaminants continued to exceed the criteria levels, especially in urban cities. The accepted levels of ozone were 65 ppb, all cities in Ontario other than Thunder Bay exceeded by about 10 Parts per Billion. d. What is the status of airborne acidic pollutants? Account for the changes. Acid rain seems to be a huge environmental problem that affects both the U.S. and Canada. Airborne acidic pollutants are transported on over large distances by weather systems. In 2004 it had been confirmed that a large amount o acid deposition in eastern
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Transboundary air pollution - Transboundary Air Pollution...

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