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Climate Change

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Climate Change:
Definitions: USA EPA!
Climate change refers to any significant change in the measures of climate lasting for an extended period of time. In other words, climate change includes major changes in temperature, precipitation, or wind patterns, among other effects, that occur over several decades or longer.
History:
20 hottest years in the last and present century occurred after 1980.
KYOTO PROTOCOL
On February 2005 KYOTO PROTOCOL came into force in most of the 169 countries of the world.
It was decided that by 2010 GHG emissions would be reduced by 5.2% below 1990 level.
Causes:
Constantly emitting GHGs are the prime cause of it.
1.Water vapor (H. 2O)
2.Carbon dioxide (CO2)
3.Methane (CH4)
4.Nitrous oxide (N2O)
5.Ozone (O3)
6.Chloro-fluorocarbons (CFCs)
Effects:
Ill health of mother earth.
Future:
A darker future awaits for us if we don't take rationale steps right now.

Published in: Environment
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Climate Change

  1. 1. Climate Change Created by: Sadia Rahat
  2. 2. Definitions USA EPA: Climate change refers to any significant change in the measures of climate lasting for an extended period of time. In other words, climate change includes major changes in temperature, precipitation, or wind patterns, among other effects, that occur over several decades or longer.
  3. 3. NASA: Climate change is a change in Earth's overall climate. This could be a change in Earth's average temperature, for example, or it could be a change in Earth's typical precipitation patterns.
  4. 4. History  20 hottest years in the last and present century occurred after 1980.  1998, 2003, 2004, 2005, 2006 were the hottest years.  The level of CO2 at present is highest in the last 6,50,000 years.
  5. 5.  According to National Climatic Data Centre in 2006, the temp of earth was 2.2°F higher than the average temperature of the 20th century.  The summer season of 2003 was hottest in Europe in the last 500 years.  The temperature shot up to 100.2°F (37.88°C) in England and 104°F (40°C) in France. This heat wave killed 35000 persons in Europe.
  6. 6.  Since 1970 the number of Hurricanes of 4 and 5 category have doubled compared to earlier period.  The monsoons storm episodes between 1951 and 2000 increased considerably resulting in extensive landslides, devastating floods and serious damage to crops.  More than 300 million peasants in Western China are now facing the possibility of receiving less water from disappearing glaciers.
  7. 7.  Since the beginning of nineteenth century half of total CO2 released due to natural and anthropogenic activities has dissolved in water. At present sea water stores 120 billion tons of CO2.  Since industrial revolution the pH of seas has increased by 30%. This will lead to extinction of some species. The carbonate shelled organism will suffer due to higher pH.  Sea level rose by 4 to 8 inches the last century.
  8. 8.  In 1850 Montana’s Glacier National Park had 150 glaciers now only 27 glaciers are left.  If the present trend continues, by 2050 due to increasing temperature 35% on land plants and animals may disappear.  Due to polar amplification the air temp in Arctic increased by 9oF (-12.77°C) (WWF).  Local people in Arctic depend on Whale, Seal, Walrus and Polar Bear. But due to global warming their migratory patterns are changing threatening the native human communities.
  9. 9.  If western Antarctic ice melts the Sealed level will rise by 16 feet, due to which Washington D.C, London and Mumbai, much of Bangladesh and many other low lying coastal cities will go under water.  If Greenland ice melts the sea level will rise by 23 feet effecting Florida.
  10. 10. Kyoto Protocol KYOTO PROTOCOL  On 16th February 2005 KYOTO PROTOCOL came into force in most of the 169 countries of the world.  It was decided that by 2010 GHG emissions would be reduced by 5.2% below 1990 level.
  11. 11.  India, China and Brazil were exempted. Though, It was a mistake since they are emitting huge quantities of GHG. Countries GHGs Reduction Target by 2008-10 European Union 8% Japan 6% USA 7%
  12. 12. Climate Change Measuring Tools: 1. Evaluation of the geologic record 2. Temperature Monitoring 3. Mathematical models
  13. 13. Interesting Facts 1. 80% of CO2 built up is due to Industrial countries. 2. Since 1950 U.S has emitted 50.7 billion tons of carbon. 3. China emitted 15.7 billion tons of carbon. 4. India emitted 4.2 billion tons of carbon. 5. Annually >60% CO2 is emitted by Industrial countries (where 20% of the world’s population lives).
  14. 14. 6. U.S with 4% population) emits 20 times “C” per capita compared to India and 7 times higher than China & 12 times higher than Brazil. 7. Russia emits 17% CO2
  15. 15. 1. The temp of world’s oceans are approaching 27°C or higher which results in more H20 evaporation and formation of Hurricanes. 2. Permafrost thawing will increase global warming by emitting CH4 & CO2. 3. Massive extinction of species could result. 4. Science 2002, reported alarming increase in outbreaks of epidemics and diseases throughout the world (land & ocean) wildlife due to climate change.
  16. 16. 5. In Antarctica Larsen Ice shelf lost 1200 sq miles section in early 2002. 6. Seven monitored ice shelves have lost 13500 km2 since 1974.
  17. 17. GHGs: 1. Water vapor (H. 2O) 2. Carbon dioxide (CO2) 3. Methane (CH4) 4. Nitrous oxide (N2O) 5. Ozone (O3) 6. Chloro-fluorocarbons (CFCs)
  18. 18. Indicators of Climate Change
  19. 19. Climate Change is Real
  20. 20. Measures to Control Climate Change
  21. 21. Measures to Control Climate Change: Eco House Eco-Food Eco-Fuel Eco-Tourism Eco-Movement • Eco–Hazard • Eco-Energy • Eco-Responsibility • Eco-Activities
  22. 22. Any Question?

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