Lec6_AA_Ozone_Hole_POST

Lec6_AA_Ozone_Hole_POST - Lecture 6 Stratospheric Ozone-4:...

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Lecture 6 Stratospheric Ozone-4: The Antarctic Ozone Hole CHEM/ENVS 380 Feb 11, 2010 Fahey et al. (2002) Twenty Questions about the Ozone Layer: Scientific Assessment of Ozone Depletion, WMO, Geneva. Antarctic 1. Why a hole in the Antarctic? Why not anywhere else? 2. How does the ozone hole form? How does it disappear? 3. What are the natural vs anthropogenic causes for variability in ozone levels? Bring a calculator on  Tuesday
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Why a Hole in the Antarctic? Fahey et al. (2002) Twenty Questions about the Ozone Layer: Scientific Assessment of Ozone Depletion, WMO, Geneva. Can exceed 1500 ppt
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Fahey et al. (2002) Twenty Questions about the Ozone Layer: Scientific Assessment of Ozone Depletion, WMO, Geneva. Typical Chlorine Gas Concentrations In: •Mid to low latitude regions •Summer at the Poles
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Conditions Required to Create an Antarctic Ozone Hole 1. Reactive halogen gases (including reservoir species) 1. Low temperatures 1. Formation of a vortex 1. Sunlight
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Polar Vortex and PSC Van Loon and Duffy (2003) Environmental Chemistry, Oxford
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Lec6_AA_Ozone_Hole_POST - Lecture 6 Stratospheric Ozone-4:...

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