Air Pollution Lecture 1 (1)

 Air Pollution

 Air Pollution Around the World 

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5 worst cities in world in terms of air pollution (Beijing, Mexico City, hanghai, !ehran " Calcutta#  Air $uality is deteriorating det eriorating rapidly in in de%eloping deteriorating countries (de%eloping countries ha%e older cars# &n henyang, China, residents see sunlight only a few wee's each year 

 Air Pollution Around the World 

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5 worst cities in world in terms of air pollution (Beijing, Mexico City, hanghai, !ehran " Calcutta#  Air $uality is deteriorating det eriorating rapidly in in de%eloping deteriorating countries (de%eloping countries ha%e older cars# &n henyang, China, residents see sunlight only a few wee's each year 

Case)&n)Point Air Pollution in Beijing and Mexico City

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Beijing (left# Mexico City (a*o%e#

 Atmosphere as a +esource 

 Atmospheric Composition 

-. /01203

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4-. -2153

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 Ar. 2163 C4-. 21273

8cosystem ser%ices 

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Bloc's 9: radiation Moderates the climate +edistri*utes water in the hydrologic cycle

4utdoor Air Pollution  Air Pollution  -

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presence of chemicals in the atmosphere *y natural e%ents or human acti%ities in concentrations concentrations high high enough to *e harmful Primary Air Pollutant ioxide

ources of Primary Air Pollutants

Primary Air Pollutants ;1 Car*on Monoxide 

from incomplete com*ustion of organic materials

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single largest source is the automo*ile

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*inds to hemoglo*in in *lood and ma'es the hemoglo*in less a*le to carry oxygen most dangerous in enclosed spaces

-1 itrogen oxides 

consist of 4 and 4-  (( lumped as 4x#

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automo*ile exhaust is primary source1

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4x is a precursor to acid rain and photochemical smog (*oth secondary pollutants#

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itrous oxide -4 is a greenhouse gas, emitted from animal wastes and *urning of fossil fuel

61 ulfur dioxide 

Burning coal is primary anthropogenic source

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 :olcanoes and hot springs are natural sources (Mt t