The Ozone layer hole <br />and its consequences…<br />
Planet earth is vulnerable to negative human action<br />
The ozone layer protectsus from the sun's ultraviolet radiation<br />
O2 + UV -> 2 O<br />O2 + O -> O3<br />
In 1985 theOzone layer hole was revealed: it was drastically growing in size and rate. <br />Academic publications increas...
Because…<br />	90% of the Ozone is located in the Stratosphere between <br />10 and 50 km above the earth's surface …<br /...
WHYis the Ozone layer being destroyed?<br />man-made chlorofluorocarbons (CFCs) are the main cause for Ozone layer depleti...
HOW?<br />
WHERE?<br />The Ozone layer hole is mainly located above the Antarctic<br />
Consequences …  <br />
CFCs greatly contribute to global warming<br />
Exposure to ultraviolet radiation could result in skin cancer<br />
Worldwide Melanoma of Skin Cancer Incidence<br />
There is some good news as well…<br />
Montreal Agreement<br />1987 international treaty<br />Signed and ratified by 195 countries<br />Sharply reduced CFCs worl...
In 2010 the size of the Ozone layer hole was the 2nd smallest <br />in over a decade<br />
So what do we learn?<br />
The hole in the ozone layer(2)
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The hole in the ozone layer(2)

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The hole in the ozone layer(2)

  1. 1. The Ozone layer hole <br />and its consequences…<br />
  2. 2. Planet earth is vulnerable to negative human action<br />
  3. 3. The ozone layer protectsus from the sun's ultraviolet radiation<br />
  4. 4. O2 + UV -> 2 O<br />O2 + O -> O3<br />
  5. 5.
  6. 6. In 1985 theOzone layer hole was revealed: it was drastically growing in size and rate. <br />Academic publications increased progressively during the 1990s.<br />
  7. 7.
  8. 8. Because…<br /> 90% of the Ozone is located in the Stratosphere between <br />10 and 50 km above the earth's surface …<br /> … and it is transparent as well<br />
  9. 9. WHYis the Ozone layer being destroyed?<br />man-made chlorofluorocarbons (CFCs) are the main cause for Ozone layer depletion<br />
  10. 10. HOW?<br />
  11. 11. WHERE?<br />The Ozone layer hole is mainly located above the Antarctic<br />
  12. 12. Consequences … <br />
  13. 13. CFCs greatly contribute to global warming<br />
  14. 14. Exposure to ultraviolet radiation could result in skin cancer<br />
  15. 15. Worldwide Melanoma of Skin Cancer Incidence<br />
  16. 16. There is some good news as well…<br />
  17. 17. Montreal Agreement<br />1987 international treaty<br />Signed and ratified by 195 countries<br />Sharply reduced CFCs worldwide<br />Full recovery not before 2050<br />
  18. 18. In 2010 the size of the Ozone layer hole was the 2nd smallest <br />in over a decade<br />
  19. 19. So what do we learn?<br />

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