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Alyse L Pp4 Gw Presentation Transcript

  • 1. Global Warming Impact Solutions Actions by: Alyse Lysgaard
  • 2. What is global warming?
    • Global warming is the increase in the average temperature of the near-surface air and oceans of the Earth. This phenomena has been occurring since the mid-20th century and it is projected to continue.
  • 3. What is the cause of global warming? Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accumulate in the atmosphere and trap heat that normally would exit into outer space.
  • 4. Explanation of the causes of global warming
  • 5. What exactly are greenhouse gases?
  • 6. Selected Greenhouse Gases
    • Carbon Dioxide (CO 2 )
      • Source: Fossil fuel burning, deforestation
      • Anthropogenic increase: 30%
      • Average atmospheric residence time: 500 years
    • Methane (CH 4 )
      • Source: Rice cultivation, cattle & sheep ranching, decay from landfills, mining
      • Anthropogenic increase: 145%
      • Average atmospheric residence time: 7-10 years
    • Nitrous oxide (N 2 O)
      • Source: Industry and agriculture (fertilizers)
      • Anthropogenic increase: 15%
      • Average atmospheric residence time: 140-190 years
  • 7. Where Do These Greenhouse Gases Come From?
  • 8. US Fossil Fuel CO2 Emissions
  • 9. US CO2 Emissions
  • 10. US Greenhouse Emissions
  • 11. Important Data
  • 12. More Important Data
  • 13. Why should we be concerned about Global Warming?
  • 14. Global Warming is the greatest environmental threat of the 21 st Century by many scientists, researchers and environmentalists. In the late 1990s scientists reached a consensus that global warming was a cause for concern. So, why should you be concerned about global warming? “ Why Should I Care?”
  • 15.  
  • 16. What is the evidence of global warming?
    • Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 100 years ending in 2005
    • The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the temperature increase since the mid-twentieth century is "very likely" due to the increase in anthropogenic greenhouse gas concentrations.
    • More frequent extreme weather is happening all over the globe.
    • Sea ice is melting in the Arctic and Antarctic Oceans.
  • 17.  
  • 18. More evidence!
    • The atmospheric levels of the greenhouse gas carbon dioxide, have been increasing since pre-industrial times from 280 part per million (ppm) to 377.5 ppm (2004 Carbon Dioxide Information Analysis Center), a 34% increase. Carbon dioxide concentrations in the atmosphere are the highest in 650,000 years.
    • Levels of atmospheric methane, a powerful greenhouse gas, have risen 145% in the last 100 years
  • 19. Major greenhouse gas emitters
    • Most greenhouse emissions come from developed countries
    • US and Australia are leaders
    • The US, with 6% of the world’s population, contributes 25% of the total emissions
  • 20. Sources of emissions
    • Industry (primarily electric power generation and cement production) is the leader
    • Transportation is second
  • 21. Still more evidence…
    • Disappearing glaciers 
    • Ice is melting all over the planet. Glaciers are melting on six continents!
  • 22. Alaska's glaciers are receding at twice the rate previously thought, according to a new study published in the July 19, 2002 Science. Note how the ice has pulled nearly out of sight from 1914 to 2004.
  • 23. Predicted precipitation changes
    • Overall increase in precipitation
    • Some areas (Arctic, Sahara, Antarctic) become wetter
    • Other areas become drier
    Annual mean precipitation change: 2071 to 2100 Relative to 1990 Source: IPCC, 2001
  • 24. Sea level rise
    • Global sea level will rise between 0.3 and 0.9 meters, depending on scenario
    • Causes: melting polar ice, thermal expansion of water
    Source: IPCC, 2001
  • 25. Sea ice trends
  • 26. Sea ice will continue to decline dramatically
  • 27.
    • Key findings:
      • Cold nights and days are decreasing, warm nights and days increasing
      • Decreases in cold nights, increases in warm nights are much greater than corresponding changes during daytime
      • Consistent with warming caused by enhanced greenhouse effect
  • 28. Predicted effects of global warming
    • Drier conditions reduce grain harvest.
    • Reduced rainfall in rainforests as a result of deforestation
    • Flooding due to rising sea levels
    • Damage to habitats due to changes in the ecosystem
    • Changes in water supply – water shortages and contamination
    • Spreading of tropical diseases - directly related to global warming
    • Increased air pollution
  • 29. Stunted coral growth as a result of the doubling of atmospheric CO 2 . According to researchers from Chapel Hill University (North Carolina) the coral reef is disappearing at an alarming rate and it seems it can’t be stopped.
  • 30. Changing ecosystem Global warming is causing a change in habitat requiring species to adapt and change!
  • 31. Science, December 3, 2004 Vol. 306, Issue 5702,1686 Is Global Warming A Valid Concern? Number disagreeing with the global consensus that greenhouse gas pollution has caused most of the warming of the last 50 years: Number of scientific studies dealing with “climate change” published in scientific journals between 1993 and 2003:
  • 32. What Can WE Do?
  • 33. Every Individual Can Make a Difference
  • 34. We Need Leadership!
  • 35. We Need: Leaders P olitical… Credit: John Decker Nevada Senator Harry Reid Senate Majority Leader Representative Shelley Berkley Representative Dina Titus Senator John Ensign Representative Dean Heller
  • 36. Pass Federal Legislation Monitor Your Elected Officials Records on Environmental Concerns
  • 37. What Do We Need for Federal Legislation!
    • We need our elected leaders to pass strong, comprehensive legislation regarding energy and global warming .
    • Increased Fuel Efficiency Standards
    • Energy Standards for Buildings
    • Emissions Standards
    • Renewable Electricity Standards
  • 38. We Want: Emissions Reduction
    • 80% total reduction below 1990 levels
            • by 2050
  • 39.
    • Limits emissions from a designated group of polluters, such as power plants.
    • Sets the limit (cap) for greenhouse gas pollution.
    • Polluters that exceed the cap need to reduce pollution.
    • Polluters that fall below the cap can sell pollution credits to other users.
    • Cap is lowered over time
    We want to set emission standards!
  • 40. How Can I Help With Federal Legislation?
    • Write letters to your elected officials
    • Write letters to the editor of your local newspaper or television station
    • Start or participate in a global warming blog
    • Educate your peers
  • 41. Is Federal Legislation the Only Answer?
    • NO!
    • Individuals, Businesses, and Communities can all work together to reduce emissions immediately.
  • 42. You can Take Action at Home.
      • Buy a hybrid or alternative fuel vehicle
      • Replace windows
      • Install solar or geothermal power
      • Vacation closer to home
  • 43. More Action At Home The Easy Stuff...
    • Change your
    • Thermostat
    • Stop Water Leaks
    • Fix Weather Stripping
    • and Caulking
    • Replace Incandescent Bulbs
  • 44. And a little more effort….
    • Buy ENERGY STAR appliances
    • Dry clothes on a line
    • III. Reduce outside irrigation
  • 45. Take Action: Reduce, Reuse, Recycle Reducing half your household waste = 2,400 lbs CO2 per year
  • 46. Take Action In Your Community
    • Work with others in your area to:
    • Help schools, businesses, and local governments cut their energy use.
    • Encourage local, state and federal government to protect open spaces, farmland, and forests
    The Las Vegas Strip will soon be going dark, and the reason is to help Mother Nature. In just two months, Las Vegas will participate in a global movement known as "Earth Hour," all in an effort to raise awareness regarding climate change and global warming.
  • 47. Educate Others to Take Action
  • 48. What Do We Gain by Participating in Global Warming Activities?
      • Energy independence - Freedom from fossil fuels and pollution
      • Cleaner, Better air and water quality
    • Clean energy/technology jobs
    • More forests, farmland, wetlands, wildlife
  • 49. Take Action and Vote Inform your elected representatives how important global warming solutions are to you.
  • 50. The Most Important Crossroads Of Our Lives…
  • 51. Credits
    • http://www.ecobridge.org/content/g_evd.htm
    • Turning up the heat on the future: Global Warming and its Consequences. Dr. John Heinrichs. Department of Geoscience.
    • www.audobon.org
    • Chemistry in Context. Applying Chemistry to Society
    • http://www.lvwash.org/html/
    • http://reid.senate.gov/
    • http://ensign.senate.gov/public/
    • http://berkley.house.gov/
    • http://heller.house.gov/
    • http://titus.house.gov
    • http://www.livescience.com/environment/050621_warming_ changes.html
    • http://www.sierraclub.org/energy/habitat/