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.
  • Climate change

    2. 2. What is Climate Change <ul><li>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. </li></ul><ul><li>It is a regional change in temperature and weather patterns.   </li></ul><ul><li>It is not just a nationwide issue, but a global issue. </li></ul>
    3. 4. Carbon Dioxide Causes <ul><li>Carbon Dioxide from : </li></ul><ul><li>- Power Plants (40% of carbon emissions) </li></ul><ul><li>- Cars (33% of carbon emissions) </li></ul><ul><li>- Airplanes (causes an estimated 3.5% of global warming) </li></ul><ul><li>- Buildings (12% of carbon emissions) </li></ul><ul><li>- Deforestation (responsible for 20-25% of carbon emissions) </li></ul>
    4. 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  
    5. 7. The causes <ul><li>The large majority of the Carbon Dioxide emissions come from humans </li></ul>
    6. 8. <ul><li>Human Causes </li></ul><ul><li>Increasing green house gas emissions from burning fossil fuels-oil, coal, gas </li></ul><ul><li>Pollution, smog from factories </li></ul><ul><li>Large forests have been cut down (trees absorb CO 2 and pollution, deforestation creates about 6 billion tons of CO 2 per year) </li></ul><ul><li>Increasing world population-more people requires more food, energy, transportation, etc. Farms animals release methane from their wastes. </li></ul><ul><li>More people also means more CO 2 production from respiration and less trees to make room for human population </li></ul>
    7. 10. Farm Animals Release Methane From T heir Wastes
    8. 11. <ul><li>Natural Causes </li></ul><ul><li>T he arctic tundra and wetlands release methane, a greenhouse gas </li></ul><ul><li>Earth naturally has a cycle of climate change that occurs every 40, 000 years </li></ul><ul><li>T he sun’s solar energy output is changing and naturally increases Earth’s average temperature by about 1 ºC every century </li></ul><ul><li>Earth’s orbit and tilt alter in relation to the sun, which changes solar energy output </li></ul>
    9. 12. Deforestation
    10. 13. The C onsequences <ul><li>R ise in average sea level </li></ul><ul><li>C hanges in  rain patterns </li></ul><ul><li>Increase of extreme climate events </li></ul><ul><li>C onsequences on the flora (plants) and fauna (animals) </li></ul><ul><li>C hanges in agricultural yields </li></ul>
    11. 14. <ul><li>- 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. </li></ul>
    12. 15. Why should we care? Global average temperatures are expected to increase by about (1-7°C) by the end of the century.
    13. 16. <ul><ul><ul><li>Produce more fuel-efficient vehicles </li></ul></ul></ul><ul><ul><ul><li>Reduce vehicle use </li></ul></ul></ul><ul><ul><ul><li>Improve energy-efficiency in buildings </li></ul></ul></ul><ul><ul><ul><li>Develop carbon capture and storage processes </li></ul></ul></ul><ul><ul><ul><li>Increase solar power </li></ul></ul></ul><ul><ul><ul><li>Decrease deforestation/plant forests </li></ul></ul></ul><ul><ul><ul><li>Improve soil carbon management strategies </li></ul></ul></ul>What next—what can we do?
    14. 17. Alternative Energy Sources
    15. 18. Help Save Earth
    16. 20. Prepared By <ul><li>M.Feyzi CAVUSOGLU </li></ul>