Comenius 2008-A klímaváltozásról általában

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Comenius 2008-A klímaváltozásról általában

  1. 1. ˝Don’t play games with me!˝ (The Earth) Our view and ideas on climate change
  2. 2. What is climate change? • It’s a change in the climate system of the Earth over a longer period. global warming greenhouse effect climate change
  3. 3. • Climate changes used to be natural only. But… …current changes are mainly caused by human activities!
  4. 4. The Human Impact • The industrial and technological revolution has changed our life. more food More people ››› more water more energy
  5. 5. Greenhouse gases
  6. 6. CO2
  7. 7. CH4
  8. 8. A few consequences… global rise in temperature melting of ice caps and glaciers sea level rise extreme weather events migration of species serious health problems
  9. 9. global rise in temperature
  10. 10. • According to scientists, by 2100 global temperature could increase by 5.8°C. • Other opinion: 4°C rise by 2040. global rise in temperature optimistic pessimistic ?
  11. 11. 2006: smallest Arctic ice cap Northwest Passage can open up melting of ice caps and glaciers glaciers can disappear from high mountains (the Alps)
  12. 12. sea level rise regions in danger: - Southeast Asia - the Far East - SE part of the US - island countries melting can lead to 3-5 m rise in sea level in the future
  13. 13. migration of species many animals will have to move many have moved already
  14. 14. • burning forests • drought • flooding • storms • tornadoes • heat waves extreme weather events
  15. 15. serious health problems
  16. 16. Scientific advice for the future Somehow we have to control warming-up. reduction of greenhouse gas emission turning our life into energy- saving mode

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