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Global Warming


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Global Warming

  1. 1. What is global warming?
  2. 2. How Global Warming Works Fossil fuels (coal, oil, natural gas) Carbon Dioxide (CO2)
  3. 3. 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. 4. What’s the difference between “global warming” and “climate change”?
  5. 5. Difference GLOBAL WARMING is the increase of the Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere. CLIMATE CHANGE is a broader term that refers to long-term changes in climate, including average temperature and precipitation.
  6. 6. Effects of Global Warming Increased Temperature Habitat Damage and Changes in Water Supply Rising Sea Level
  7. 7. What’s the proof that global warming is taking place?
  8. 8. Portage Glacier 1914 2004 • Alaska Photos: NOAA Photo Collection and Gary Braasch –
  9. 9. Colorado River • Arizona June 2002 Dec 2003
  10. 10. Why is global warming happening?
  11. 11. Burning of Fossil Fuels Pollution from coal, natural gas, and oil Pollution from coal, natural gas, and oil Pollution from coal, natural gas, and oil
  12. 12. When did global warming start?
  13. 13. Global Atmospheric Concentration of CO2
  14. 14. How is global warming measured?
  15. 15. Ice Core DataIce Core Data COCO22 Measurements Before 1958 - AntarcticaMeasurements Before 1958 - Antarctica
  16. 16. CO2 Atmospheric Measurements CO2 Measurements Since 1958 – Mauna Loa, Hawaii
  17. 17. Temperature (Northern Hemisphere) CO2 Concentrations 1000 Years of CO2 and Global Warming DegreeCelsiusIncrease PartsPerMillion Year Year 1000 1200 1400 1600 1800 2000 1000 1200 1400 1600 1800 2000
  18. 18. GlobalGlobal Warming:Warming: Shifting GearsShifting Gears
  19. 19. 2007 Goal: Reductions in CO2 Per Year BillionsofMetricToCarbon
  20. 20. 2007 Reductions in CO2 Per Year GigatonCarbon Produce electricity efficiently Use electricity efficiently Vehicle efficiency Solar and Wind Power Biofuels Carbon capture and storage BillionsofMetricToCarbon Our Goal
  21. 21. What’s being done now to reduce our emissions? Solar PowerWind Power Fuel-Efficiency
  22. 22. What can you do to helpWhat can you do to help solve the problem?solve the problem?
  23. 23. Simple Things To Do Turn off your computer or the TV when you’re not using it. Take shorter showers. Heating water uses energy. Keep rooms cool by closing the blinds, shades, or curtains. Turn off the lights when you leave a room. Use compact fluorescent bulbs.
  24. 24. Be Bulb Smart—Use CFLs Incandescent Compact Fluorescent 500 lbs. of coal What’s the difference? •1,430 lbs. CO2 pollution avoided •$30 saved
  25. 25. Simple Things To Do Dress lightly when it’s hot instead of turning up the air conditioning. Or use a fan. Dress warmly when it’s cold instead of turning up the heat. Offer to help your parents keep the air filters on your AC and furnace clean. Walk short distances instead of asking for a ride in the car. Plant a tree. Recycle.
  26. 26. © National Wildlife Federation, 2007