Climate Change Effects

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Climate Change Effects

  1. 1. ? WHAT IS
  2. 2. it’s MORE than a NUMBER...
  3. 3. SCIENCE it’s about…
  4. 4. it’s a clear limit
  5. 5. CLIMATE THAT TELLS US WHAT’S SAFE FOR OUR
  6. 6. What do we know about climate change?
  7. 7. THE GREENHOUSE EFFECT 1. CO2 and other greenhouse gases trap heat from the sun in our atmosphere.
  8. 8. Before the Industrial Revolution, for thousands of years, the amount of carbon in the atmosphere was at 287ppm
  9. 9. Now, after three centuries of burning coal, oil, and gas, we're at 390ppm – that’s above any levels we’ve seen in recorded history.
  10. 10. 2. We also know that CO2 influences global temperature CO2 in PPM GLOBAL TEMPERATURE Years ago Parts per Million CO2 TODAY: 390ppm 550ppm? More? EARLY 1900S LAST ICE AGE Where we’ll be mid-century if we keep this up look how the temperature line follows CO2 concentrations throughout history
  11. 11. 3. And now we’re seeing the results - we can see that measurable, recorded impacts are happening now all around us. Chapare, Bolivia
  12. 12. GLACIERS ARE MELTING
  13. 13. MUIR & RIGGS GLACIER 1941
  14. 14. MUIR & RIGGS GLACIER 2004
  15. 15. PEDERSEN GLACIER, AK 1920
  16. 16. PEDERSEN GLACIER, AK 2005
  17. 17. SEA LEVELS ARE RISING Three Year Average Satellite Altimetry Year Sea Level Change (cm)
  18. 18. OCEANS ARE ACIDIFYING
  19. 19. Coral reefs are bleaching
  20. 20. WEATHER IS BECOMING MORE EXTREME
  21. 21. Australia suffers worst drought in 1,000 years “ ” - Guardian UK, Nov 7, 2008
  22. 22. U.S. dealing with Katrina’s wrath as death toll soars. “ ” - International Herald Tribune, August 31, 2005
  23. 23. MAJOR FLOODS PER DECADE number of major floods per decade
  24. 24. Small islands are sinking or eroding
  25. 25. “ Rapid Warming’ Spreads Havoc in Canada’s Forests. “ ” - Washington Post, March 1, 2006
  26. 26. Australia fires spark calls for CLIMATE ACTION “ ” - Washington Post, March 1, 2006
  27. 27. The most startling evidence yet…
  28. 28. is the MELTING OF THE ARCTIC. New predictions Satellite observations Mean IPCC prediction Most likely change (melt) IPCC range Actual observed melting it has melted nearly 80 YEARS ahead of when scientists predicted YEAR % change in ice cover
  29. 29. CO2 IN THE ATMOSPHERE WE’RE HERE: 390 WE NEED TO BE HERE: 350 PARTS PER MILLION CO2 YEAR
  30. 30. How do we know all this?
  31. 31. The largest research project in history: I n 1988, the IPCC was created to “provide the decision-makers and others interested in climate change with an objective source of information about climate change”
  32. 32. NEW REPORTS EVERY 4 YEARS SCIENTISTS
  33. 33. WON THE NOBEL PRIZE IN 2007 WITH AL GORE
  34. 34. We’ve warmed our planet more than 1 degree F/ .07 degrees C and are already observing major impacts and changes in our climate.
  35. 35. Do we really want to see what happens if we keep going? We will face increasingly severe impacts like…
  36. 36. the disappearance of SMALL ISLANDS
  37. 37. severely impacted LOCAL ECONOMIES
  38. 38. The most comprehensive review ever carried out on the economics of climate change warns that global warming could inflict worldwide disruption as great as that caused by the two World Wars and the Great Depression. “ ” - Environmental News Service STERN REVIEW, 2006
  39. 39. The world has never faced such a predictably massive threat to food production as that posed by the melting mountain glaciers of Asia “ ” - Lester Brown, Earth Policy Institute, Author of Plan B THE DISRUPTION OF FOOD PRODUCTION
  40. 40. Climate change could force 1 BILLION from their homes by 2050. “ ” - April 30, 2008, The Independent. A HUMAN RIGHTS CRISIS AND INSTABILITY
  41. 41. THAT’S WHY WE HAVE TO ACT NOW.
  42. 42. “ If humanity wishes to preserve a planet similar to that on which civilization developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO2 will need to be reduced from its current 387ppm to at most 350ppm.” - NASA climatologist Dr. James E. Hansen, 2008
  43. 43. so how do we get back to 350ppm and avoid climate catastrophe?
  44. 44. IT’S DIFFICULT BUT NOT IMPOSSIBLE IF WE START NOW.
  45. 45. IT MEANS PUTTING UP WIND TURBINES INSTEAD OF COAL PLANTS
  46. 46. IT MEANS PLANTING TREES INSTEAD OF CLEAR-CUTTING RAINFORESTS
  47. 47. AND IMPLEMENTING A THOUSAND DIFFERENT SOLUTIONS
  48. 48. that can create new jobs
  49. 49. And make our communities HEALTHIER
  50. 50. PARTS PER MILLION CO2 YEAR Phaseout of coal by 2030 Improved forestry and soil Reduced oil/gas use GETTING TO 350
  51. 51. <ul><li>According to Jim Hansen and other scientists the main things we need to do right away are: </li></ul><ul><li>Stop coal use by 2030 </li></ul><ul><li>Improve agricultural and forestry practices </li></ul><ul><li>Dramatically reduce the use of all other fossil fuels </li></ul><ul><li>If we manage to accomplish these things, we could get back to 350ppm by mid-century </li></ul>
  52. 52. BY TAKING ACTION, WE CAN CALL ON OUR LEADERS TO MAKE THESE CHANGES
  53. 53. AND PROVIDE AN EXAMPLE OF HOW OUR COMMUNITIES COULD BE IN A WORLD AT 350PPM

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