Global warming


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Global warming

  1. 2. What is global warming?
  2. 3. How Global Warming Works? Fossil fuels (coal, oil, natural gas) Carbon Dioxide (CO 2 )
  3. 4. The Sun’s energy passes through the car’s windshield. This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing the inside of the car to warm up. Example of the Greenhouse Effect
  4. 5. <ul><li>What’s the difference between “global warming” and “climate change”? </li></ul>
  5. 6. Difference <ul><li>GLOBAL WARMING </li></ul><ul><li>is the increase of the Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere. </li></ul><ul><li>CLIMATE CHANGE </li></ul><ul><li>is a broader term that refers to long-term changes in climate, including average temperature and precipitation. </li></ul>
  6. 7. Effects of Global Warming Increased Temperature Habitat Damage and Species Affected Changes in Water Supply Rising Sea Level
  7. 8. What’s the proof that global warming is taking place?
  8. 9. Portage Glacier <ul><li>Alaska </li></ul>1914 2010
  9. 10. Colorado River <ul><li>Arizona </li></ul>June 2002 Dec 2010
  10. 11. Why is global warming happening?
  11. 12. Burning of Fossil Fuels Pollution from coal, natural gas, and oil Pollution from coal, natural gas, and oil
  12. 14. When did global warming start?
  13. 15. Global Atmospheric Concentration of CO 2
  14. 16. How is global warming measured?
  15. 17. Ice Core Data CO 2 Measurements Before 1958 - Antarctica
  16. 18. CO 2 Atmospheric Measurements CO 2 Measurements Since 1958 – Mauna Loa, Hawaii
  17. 19. 1000 Years of CO 2 and Global Warming Degree Celsius Increase Parts Per Million Year Year 1000 1200 1400 1600 1800 2000 1000 1200 1400 1600 1800 2000 Temperature CO 2 Concentrations
  18. 21. An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation . Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers . Other likely effects of the warming include more frequent occurrence of extreme weather events including heatwaves , droughts and heavy rainfall events, species extinctions due to shifting temperature regimes, and changes in agricultural yields .
  19. 23. C ountries into the agreement Green indicates countries that have ratified the treaty; Dark green are Annex I and II countries that have ratified the treaty; Grey is not yet decided; Brown is no intention of ratifying
  20. 27. Global Warming: Shifting Gears
  21. 28. 2010 Goal: Reductions in CO 2 Per Year Billions of Metric Tons Carbon
  22. 29. 2010 Reductions in CO 2 Per Year Gigaton Carbon Produce electricity efficiently Use electricity efficiently Vehicle efficiency Solar and Wind Power Biofuels Carbon capture and storage Billions of Metric Tons Carbon Kyoto protocol goal
  23. 30. We can stop global warming!
  24. 31. What’s being done now to reduce our emissions? Solar Power Wind Power Fuel-Efficiency
  25. 32. What can you do to help solve the problem?
  26. 33. Simple Things To Do <ul><li>Turn off your computer or the TV </li></ul><ul><li>when you’re not using it. </li></ul><ul><li>Take shorter showers. Heating water uses energy. </li></ul><ul><li>Keep rooms cool by closing the blinds, shades, or </li></ul><ul><li>curtains. </li></ul><ul><li>Turn off the lights when you leave a room. </li></ul><ul><li>Use compact fluorescent bulbs. </li></ul>
  27. 34. Simple Things To Do <ul><li>Dress lightly when it’s hot instead of turning up </li></ul><ul><li>the air conditioning. Or use a fan. </li></ul><ul><li>Dress warmly when it’s cold instead of turning </li></ul><ul><li>up the heat. </li></ul><ul><li>Keep the air filters on your Air Conditioner and furnace clean. </li></ul><ul><li>Walk short distances instead of asking for a </li></ul><ul><li>ride in the car. </li></ul><ul><li>Plant a tree. </li></ul>Recycle .