Topic 6 Flashcards
Atmosphere is a mix of
Nitrogen 78% Oxygen 21% Argon .9% CO2 .03% Water vapor 0-4%
Trace gases
Only found in small amounts
Neon krypton helium xenon
Role of GHG
Maintain temp
Pollutants emitted w fossil fuel burning
Hydrocarbons:
Nitrogen monoxide
Nitrogen dioxide (when above reacts w oxygen)
Bad things about ozone
Toxic gas
Damages crops and forests
Irritates eyes
Can effect breathing
Sources of ozone
Transport Cooking Dust from construction sites and roads Heating Power generation
Tropospheric ozone is
A secondary pollutant
Ozone reaching high levels
Smog
Bad things about smog
Damages respiratory tissues Tissue decay Asthma Eye irritation Coughing Chest pain
Amount of smog depends on
Topography, climate, population density, fossil fuel use
Photochemical smog
Mixture of one hundred secondary and primary pollutants
Ozone is main
Contributors to smog
Deforestation and burning
Mitigation
Use less fossil fuels Energy efficient technologies Public transit Walking, biking Reforestation
Effects of UV radiation
DNA mutation Cataracts Photosynthesis can't happen Reduces PP Damages immune system
CFC management
Recycling refrigerants
Alternatives to aerosols and has blown plastics
