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Unformatted text preview: 3. The Greenhouse Effect a. Atmospheric gases: CO2, CH4, CFCS trap more heat up the lower atmosphere, similar to the effect of a greenhouse b. Concentration of greenhouse gases increased due to human activites 4. Why does climate change? a. Milankovitch Cylces: 100K years-variation in earth orbit around the sun a.i. 20-40K years: tilting and wobbling of earth axis b. Climate system unstable even in shorter cycles( a few decades) b.i. Ocean conveyor belt, global circulation of ocean water , contributes to the change 5. We can sequester CO2 by increasing ocean photosynthesis or injecting CO2 a. Fertilize ocean with Iron (SOFEX Experiment) b. Ocean injection of gaseous CO2...
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This note was uploaded on 12/20/2011 for the course GEOS 1024 taught by Professor Meschreiber during the Spring '08 term at Virginia Tech.
- Spring '08