AirPollution2021-Live.pptx
Air Pollution
News
The Atmosphere
75% of Mass
below
17 km
Thermal Inversions
Zoom Poll: What are the worst air pollutants in Boston?
A) NOx
B) Ozone (O3)
C) Radon (Rn)
D) Carbon Monoxide (CO)
E) Particulate Matter (PM2.5)
F) SOx
What does air pollution do?
Damage materials
Damage plants and animals
Human health
Cause acid rain
Decrease visibility
Breakout Groups
Pick a major air pollutants.
Where does it come from?
How do we reduce it?
Stationary Sources
Pathways
Acid Deposition
Acid Rain
Dry
Wet
pH
Water 7
Lemon Juice 2
Windex 11
Rain 5.5
Seawater 8
Coke 2.5
Acid Fog 2
pH of Rain
Smog
Photochemical Smog
Needs VOC (hydrocarbons)
Needs NOx
Needs sunlight
Produces NO2 (brown), O3 (ozone)
Ozone damages plants (5-10% reduction in food production)
Indoor Air Pollution
Zoom Poll: How do you reduce risk from smog?
A) Do not participate in strenuous outdoor activity
B) Stay indoors
C) Wear sunscreen
D) Wear a mask
E) Take a shower
Los Angeles
Los Angeles
