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Global Warming09

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Transcript

  • 1. Effects of Global Climate Change Jumping into the world of speculation
  • 2. The big questions
    • Are global CO2 concentrations increasing?
      • Yes-
    • Are global temperatures increasing?
      • Yes-
    • Does CO2 contribute to the greenhouse effect?
      • Yes-
    • Does the greenhouse effect cause warming?
      • Yes-
    • How will the earth be affected by warming?
      • Methods?
  • 3. Climate Models
    • How much will each thing contribute?
    • Manipulate to match
    • the past
    • Use it to predict the
    • future
    • Must take feedbacks
    • into account
  • 4. Consider the feedbacks
    • Negative feedback- reverse the warming trend
    • Positive feedback- exaggerates the warming trend
    • More water evaporates which make more clouds that reflect the sun
    • Glaciers melt and reveal dark rock underneath that absorbs the sun
    • Melting permafrost releases methane from decomposing ground
    • More CO2 in atmosphere for plants
  • 5. Combined Effects
  • 6. Terminology Global Warming Global Climate Change Why?
  • 7. Applying to Earth Systems
  • 8. What effect is predicted to… ?
    • Wildlife
    • Tropical storms
    • Tropical diseases
    • Polar ice caps/sea level
    • Desertification
    • Agriculture
    • Good impacts? Bad impacts?
    • Connections to past units
  • 9. Wildlife
    • Good impacts
    • Bad impacts
    • Connections to past units
  • 10. Tropical Storms
    • Good impacts
    • Bad impacts
    • Connections to past units
  • 11. Tropical Disease
    • Good impacts
    • Bad impacts
    • Connections to past units
  • 12. Polar Ice Caps/Sea Level
    • Good impacts
    • Bad impacts
    • Connections to past units
  • 13. Desertification
    • Good impacts
    • Bad impacts
    • Connections to past units
  • 14. Agriculture
    • Good impacts
    • Bad impacts
    • Connections to past units