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Global Carbon Cycle And Global Change

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  • 1. Global Carbon Cycle and Global Climate Change
    Ecology: Science Behind Environmental Issues
    Spring 2010
  • 2. Global Carbon Cycle(simple view)
    EoE- http://www.eoearth.org/article/Carbon_cycle
  • 3. Main “Resevoirs” for Carbon
    Atmosphere
    Rocks
    Including fossil fuels
    Water
    Living Organisms
  • 4. Humans Have Altered the Global Carbon Cycle
    Burning Fossil Fuels
    Increases the rate of movement of carbon from “rocks” to “atmosphere”
    Deforestation
    Lower number of plants photosynthesizing decreases the rate that carbon moves from “atmosphere” to “living organisms”
    Burning Trees
    Increases the rate that carbon moves from “living organisms” to the atmosphere
  • 5. Woods Hole Research Center- http://www.whrc.org/carbon/index.htm
  • 6. Woods Hole Research Center- http://www.whrc.org/carbon/index.htm
  • 7. Mauna Loa Observatory
    EoE-http://www.eoearth.org/article/Mauna_Loa_curve
  • 8. Mauna Loa Curve
    EoE- http://www.eoearth.org/image/Mauna_loa_curve.jpg
  • 9. Carbon Dioxide is a Greenhouse Gas
    Electromagnetic energy from the sun is transmitted through carbon dioxide
    Infrared radiation (heat) is absorbed by carbon dioxide and reradiated
  • 10. Greenhouse Effect
  • 11. Global Climate Change
    Unless otherwise noted, all slides are from a presentation developed by Katharine Hayhoe, a Research Associate Professor in the Department of Geosciences at Texas Tech University
    She was a member of the Intergovernmental Panel on Climate Change as was awarded a Nobel Prize as part of that group.
    Her full presentation and other info is available at
    http://katharinehayhoe.com/
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  • 13. Mauna Loa Curve
    http://www.eoearth.org/article/Mauna_Loa_curve
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  • 15. Greenhouse Effect
    http://www.eoearth.org/article/Greenhouse_effect
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  • 29. What experiment can we conduct to “prove” that human activity is causing global warming?We only have one planet, so we can’t do a controlled, replicated, manipulative experiment?Thus, we have to rely on mathematical models.
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  • 35. http://www.eoearth.org/article/Intergovernmental_Panel_on_Climate_Change_%28IPCC%29
    Intergovernmental Panel on Climate Change (IPCC)