Smog
Smog
Author: Uku Volke 12.A
TKiG, 2012
Problem
· Highly toxic
· Term originates from the 19th century London
· Coined in Daily Telegraph July 26, 1905
· Worsened by thermal inversions
Origin:
Smo(ke) + (fo)g = Smog
Main Causes
The London Smog: coalpowered industry.
Photochemical smog = vehicular fumes + industrial fumes + sunlight
The main pollutants: NO2, SO2
Thermal Inversion
Health Risks
· Bad for everyone
· Extra risk for people with
heart, lung conditions and
children, elderly
Smog in NYC, 1988
Beijing, 2005
The Worst Case Scenario
5 "Smoggiest" Cities
· Beijing, China
· New Delhi, India
· Santiago, Chile
· Mexico City, Mexico
· Ulanbataar, Mongolia
Alternative Meanings
Smog may also refer to....
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