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Climate change

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  • These are two environmentalist who wants to pay attention to global warming. 
  • Global average temperatures are expected to increase by about 2-13°F (1-7°C) by the end of the century. That may not sound like a lot, so what’s the big deal? The problem is that small changes in global average temperature can lead to really large changes in the environment. Let’s look at some of the expected changes.

Transcript

  • 1. CLIMATE CHANGE
  • 2. What is Climate Change
    • Climate change  is a long-term change in the statistical distribution of  weather  patterns over  periods of time  that range from decades to millions of years.
    • It is a regional change in temperature and weather patterns.  
    • It is not just a nationwide issue, but a global issue.
  • 3.  
  • 4. Carbon Dioxide Causes
    • Carbon Dioxide from :
    • - Power Plants (40% of carbon emissions)
    • - Cars (33% of carbon emissions)
    • - Airplanes (causes an estimated 3.5% of global warming)
    • - Buildings (12% of carbon emissions)
    • - Deforestation (responsible for 20-25% of carbon emissions)
  • 5. The  greenhouse effect  is a process by which thermal radiation from a planetary surface is absorbed by atmospheric  greenhouse gases , and is re-radiated in all directions. Since part of this re-radiation is back towards the surface, energy is transferred to the surface and the lower atmosphere. As a result, the temperature there is higher than it would be if direct heating by solar radiation were the only warming mechanism The  G reenhouse E ffect  
  • 6.  
  • 7. The causes
    • The large majority of the Carbon Dioxide emissions come from humans
  • 8.
    • Human Causes
    • Increasing green house gas emissions from burning fossil fuels-oil, coal, gas
    • Pollution, smog from factories
    • Large forests have been cut down (trees absorb CO 2 and pollution, deforestation creates about 6 billion tons of CO 2 per year)
    • Increasing world population-more people requires more food, energy, transportation, etc. Farms animals release methane from their wastes.
    • More people also means more CO 2 production from respiration and less trees to make room for human population
  • 9.  
  • 10. Farm Animals Release Methane From T heir Wastes
  • 11.
    • Natural Causes
    • T he arctic tundra and wetlands release methane, a greenhouse gas
    • Earth naturally has a cycle of climate change that occurs every 40, 000 years
    • T he sun’s solar energy output is changing and naturally increases Earth’s average temperature by about 1 ºC every century
    • Earth’s orbit and tilt alter in relation to the sun, which changes solar energy output
  • 12. Deforestation
  • 13. The C onsequences
    • R ise in average sea level
    • C hanges in  rain patterns
    • Increase of extreme climate events
    • C onsequences on the flora (plants) and fauna (animals)
    • C hanges in agricultural yields
  • 14.
    • - Global warming is a worldwide problem, and all countries are going to have to work together as one in order to prevent one of the greatest threats to mankind and our environment.
  • 15. Why should we care? Global average temperatures are expected to increase by about (1-7°C) by the end of the century.
  • 16.
        • Produce more fuel-efficient vehicles
        • Reduce vehicle use
        • Improve energy-efficiency in buildings
        • Develop carbon capture and storage processes
        • Increase solar power
        • Decrease deforestation/plant forests
        • Improve soil carbon management strategies
    What next—what can we do?
  • 17. Alternative Energy Sources
  • 18. Help Save Earth
  • 19.  
  • 20. Prepared By
    • M.Feyzi CAVUSOGLU