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Lec5_Prod_and_Loss_of_Ozone_POST

Lec5_Prod_and_Loss_of_Ozone_POST - Lecture 5 Stratospheric...

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CHEM/ENVS 380 Feb 9, 2010 Lecture 5 Stratospheric Ozone-3: Mechanisms of Ozone Production and Destruction 1. How is ozone produced and destroyed naturally? 2. What are the catalytic and non-catalytic pathways of ozone destruction? 3. What are X-catalysts?  What are their major properties? 4. Whereabouts in the atmosphere does the ozone layer exist, and why? 5. How do we affect stratospheric ozone levels?
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+ heat O 3 Production UV-C UV Absorption spectrum of O 2 E = hc/λ Fahey et al. (2002) Twenty Questions about the Ozone Layer: Scientific Assessment of Ozone Depletion, WMO, Geneva. Baird and Cann (2008)
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+ Availability of O 2 - - High-E Solar Radiation + Fahey et al. (2002) Twenty Questions about the Ozone Layer: Scientific Assessment of Ozone Depletion, WMO, Geneva.
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O 3 Destruction (Non-Catalytic) O 3 + UV-B or UV-C O 2 * + O* Absorption spectrum of O 3 UV-C UV-B (Q: What is the likely fate of O 2 + O?) Major destruction pathway Minor destruction pathway O 3 + O 2 O 2 Baird and Cann (2008)
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