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Current and Future Trends and Impacts

AP Environmental Science Mr. Grant Lesson 50. Current and Future Trends and Impacts. Objectives:. Define the term Intergovernmental Panel on Climate Change (IPCC) . Outline current and future trends and impacts of global climate change.

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Current and Future Trends and Impacts

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  1. AP Environmental Science Mr. Grant Lesson 50 Current and Future Trends and Impacts

  2. Objectives: • Define the term Intergovernmental Panel on Climate Change (IPCC). • Outline current and future trends and impacts of global climate change.

  3. Define the term Intergovernmental Panel on Climate Change (IPCC). Intergovernmental Panel on Climate Change (IPCC):

  4. Outline current and future trends and impacts of global climate change. • The Intergovernmental Panel on Climate Change (IPCC) synthesizes current climate research, and its periodic reports represent the consensus of the scientific community. • Temperatures on the Earth have warmed by an average of 0.74 degrees C (1.33 degrees F) over the past century and are predicted to rise 1.8-4.0 degrees C (3.2-7.2 degrees F) over the next century. • Changes in precipitation vary by region. • Melting glaciers will diminish water supplies, and melting ice sheets will add to sea level rise.

  5. Outline current and future trends and impacts of global climate change. • Sea level has risen an average of 17cm (7in) over the past century. • Other impacts include ocean acidification; extreme weather events; effects on organisms and ecosystems; and impacts on agriculture, forestry and health, and economics. • Climate change and its impacts will vary regionally. • Despite some remaining uncertainties, the scientific community feels that evidence for human’s role in influencing climate is strong enough to justify taking action to reduce greenhouse emissions.

  6. The IPCC’s fourth assessment report (2007)

  7. The IPCC’s fourth assessment report (2007)

  8. Temperatures continue to increase

  9. The future will be hotter

  10. Temperatures will rise globally Projected increases in surface temperature for 2090–2099 relative to 1980–1999

  11. Projected changes in precipitation Precipitation will increase at high latitudes and decrease at low and middle latitudes

  12. Worldwide, glaciers, snow and ice are melting rapidly

  13. Rising sea levels

  14. Coastal areas will flood

  15. Rising sea levels will devastate coasts

  16. Coral reefs are threatened

  17. Climate change affects organisms and ecosystems

  18. Animals and plants have nowhere to go

  19. Climate change affects people

  20. Heat waves will increase

  21. Climate change affects economics

  22. Impacts of climate change will vary regionally The Arctic has suffered the most so far U.S. temperatures will continue to rise

  23. Impacts of climate change will vary

  24. 2009 U.S. Global Change Research Program

  25. Predictions from two climate models By 2050, Illinois will have a climate like Missouri’s By 2090, it will have a climate like Louisiana’s

  26. Causes and consequences of climate change

  27. Are we responsible for climate change?

  28. The debate over climate change is over

  29. “Climategate”

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