Global warming411


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Global warming causes, effects, solutions . Good for highschool aged students. Look at notes on slides to explain some visuals.

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Global warming411

  1. 1. Global Warming:<br />the 411<br />
  2. 2. First, some climate change terminology:<br />Greenhouse Effect: The insulating effect of atmospheric greenhouse gases (e.g., water vapour, carbon dioxide, methane, etc.) that keeps the Earth's temperature about 15 º warmer than it would be otherwise.<br />Greenhouse Gas (GHG): Any gas that contributes to the "greenhouse effect."<br />Global Warming: The progressive rise of the Earth's average surface temperature caused by increased concentrations of GHGs in the atmosphere.<br />Carbon Sinks: Processes that remove more carbon dioxide from the atmosphere than they release. Both the terrestrial biosphere and oceans can act as carbon sinks.<br />Positive feedback loop: natural processes that can amplify the magnitude of the warming eg, as temperatures rise, ice melts, more dark sea water is exposed, absorbing more heat, causing more ice to melt…<br />
  3. 3.
  4. 4. Causes<br />Effects<br />Solutions<br />
  5. 5. #1 Causes<br />So who, or what is responsible?<br />
  6. 6. Carbon Dioxide<br />
  7. 7. burn baby burn...<br />CO2 is released when ever fossil fuels are burned…<br />…and they’re burned a lot!<br />
  8. 8. Burned for<br />Power generation<br />Coal<br />
  9. 9. Power generation<br />Home heating<br />Natural gas<br />Burned for<br />
  10. 10. Moving us and our stuff around the globe…and for getting more oil, coal and natural gas out of the ground<br />Burned for<br />
  11. 11. Fun Fact!<br />there are no fewer than 4,000 <br />aircraft in the air at any time over <br />the U.S.<br />
  12. 12. Causes continued…<br />So who, or what else is responsible?<br />I don’t even own a car!<br />
  13. 13. Or more accurately, the people who eat them…<br />I hope this place has good plumbing!<br />
  14. 14. Fun Fact:<br />methane<br />beef cattle account for a whopping 70% of all livestock methane emissions!<br />
  15. 15. Other sources of methane:<br />a.k.a. cow burps!<br />
  16. 16. Fun Fact!<br />There are billions of tonnes of methane trapped in the permafrost<br />and<br />Methane is 20-30 times more powerful than CO2 at trapping heat!<br />
  17. 17. positive feedback loop:<br />
  18. 18. effects of global warming<br />
  19. 19. <ul><li>Water - sea level rise, coastal flooding, mass evacuations</li></ul> - fresh water shortage (rivers and lakes)<br /> - ocean water acidification (base of the food chain)<br /> - Thermohaline circulation shut down <br /> - coral bleaching<br />
  20. 20. thermohaline circulation<br />Hyperlink to animation<br />
  21. 21. A pteropod shell exposed to carbonate ion-depleted seawater with acid levels set to the pH of ocean water expected in 2100.<br /> The shell dissolved after 45 days. Rising CO2 levels in the atmosphere, directly correspond to increasing acidity of seawater.<br />
  22. 22. Severe weather - increasing in frequency and severity. <br />
  23. 23. <ul><li>Disease</li></ul>Malaria<br />
  24. 24. <ul><li>Habitat loss & Species Extinction</li></ul>All of these animals<br />need arctic ice<br />to survive…<br />
  25. 25. …and it’s melting fast.<br />
  26. 26. <ul><li>Heat waves</li></ul>France heat wave death toll set at 14,802<br />Posted 9/25/2003 10:56 AM  <br />
  27. 27. <ul><li>Forest fires</li></ul>Australia's fires taken as a portent of global warming <br />Submitted by Sid Astbury on Tue, 02/10/2009 <br />
  28. 28. <ul><li>Food shortages due to drought</li></ul>Palmer Drought Severity Index <br />
  29. 29. $<br />$<br />economic impacts<br />$<br />
  30. 30. Effects summarized:<br />Water – too much…too little<br />Animals – in trouble<br />Weather – hotter & stormier<br />Disease – diseaseier<br />Food – less<br />Fire – more<br />$$$ - less<br />
  31. 31. Solutions!<br />…yes, something <br />can be done !<br />
  32. 32.
  33. 33. Tips for Cutting Automobile Emissions<br />Take it easy: Aggressive driving wastes fuel. Driving like a moron can burn an extra 125 gallons of gas per year!<br />Don't idle: Idling for more than 10 seconds uses more gas than restarting your car. <br />A/C: Air conditioning can decrease your fuel efficiency by as much as 12% in stop-and-go traffic, so consider cracking the windows. <br />Keep up the pressure: Low tire pressure wastes over two million gallons of gasoline <br />in the U. S.— every day!<br />Skipthe drive thru! – instead of letting your car run as you inch toward the pick-up window…turn it off, get out, and pick it up yourself<br />
  34. 34. A gas powered lawn mower running for 1 hour emits as much pollution as driving 1000 km in a 1992 model automobile<br />
  35. 35. Zero CO2<br />Zero V.O.C.s<br />(volatile organic compounds…a.k.a. pollution)<br />
  36. 36. Half a million trees would be spared if every U.S. household replaced a 500-sheet roll of tree fibre toilet paper with one made from recycled paper…so quit flushing trees down the toilet!<br />
  37. 37. <ul><li>Air Dry Your Clothes
  38. 38. Line-dry your clothes in the spring and summer instead of using the dryer. Save 700 lbs. of carbon dioxide and $75 per year.</li></li></ul><li>
  39. 39. fun fact!<br />Seventy percent of the levelled rain forest in the Amazon is used to raise animals for meat consumption….so eat less meat!<br />
  40. 40. Solar power!<br />Hours for Earth to receive the same energy from the sun <br />as humans consume in a year: 1<br />
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