Lec8_Groundlevel_air_poll-2

Lec8_Groundlevel_air_poll-2 - G r e e n h o u s e g a s e m...

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Unformatted text preview: G r e e n h o u s e g a s e m i s s i o n s a n d C L I M A T E C H A N G E A C I D R A I N P A R T I C U L A T E M A T T E R M O G Lecture 8: Ground level air pollution-2 Photochemical Smog Basics CHEM/ENVS 380 March 4, 2010 1. What are primary and secondary pollutants? 2. What key role does OH radical play in the lower atmosphere? 3. Ground-level pollution is now a continental to hemispheric problem. 4. Get used to converting one gas concentration unit into another. Example Primary Air Pollutants • Carbon dioxide (CO 2 ) • Carbon monoxide (CO) • Sulfur dioxide (SO 2 ) • Methane (CH 4 ) • Particulate matter (PM) • Nitric oxide (NO) • Volatile organic compounds (VOCs) All of the above have natural sources too (e.g., see Table 3-1 in textbook) OH Radical: The Atmospheric Vacuum Cleaner Butcher et al. (1992), Global Biogeochemical Cycles, Academic Press Classical, or London Smog •Burning of coal •Soot production •SO 2 production Photochemical, or LA Smog • A 20 th century phenomenon • Ozone, nitric acid, various...
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Lec8_Groundlevel_air_poll-2 - G r e e n h o u s e g a s e m...

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