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GREEN HOUSE EFFECTANDGLOBAL WARMING            ASHISH KUMAR            AFB- 2011-13003
INTRODUCTION Global warming refers to the rising  average temperature of Earths  atmosphere and oceans. In the last 100 ...
GREENHOUSE VS GLOBALWARMING   The greenhouse effect & global warming    are not the same thing.      Global warming refe...
How Global Warming      Works         Carbon Dioxide (CO2)Fossil fuels (coal, oil, natural gas)
HOW CO2 CONNECTED TO GLOBALWARMING?   Physically, via the greenhouse effect.   The connection is usually made via the us...
SELECTED GREENHOUSE GASES   Naturally occurring amounts of    greenhouse gases have a mean warming    effect of about 33 ...
Methane (CH4)   Source: Rice cultivation, cattle & sheep ranching,    decay from landfills, mining   Anthropogenic incre...
Example of the                   Greenhouse Effect                        The Sun’s energy passes                        t...
GREENHOUSE EFFECTSun
Effects of Global Warming  Rising Sea Level     Increased Temperature  Habitat Damage and  Species Affected     Changes in...
What’s the proof thatglobal warming is taking          place?
Portage Glacier    • Alaska                       1914                                                     2010Photos: NOA...
Colorado River• Arizona    June 2002    Dec 2008
What’s being done now to   reduce our emissions?Wind Power   Solar Power   Fuel-Efficiency
We can stop global                  warming!Scientists agree that theburning of fossil fuels iscausing global warming.Sinc...
How we can reduce global warming?
Simple Things To Do      Turn off your computer or the TV      when you’re not using it.Take shorter showers. Heating wate...
Simple Things To Do       Dress lightly when it’s hot instead of turning up      the air conditioning. Or use a fan.      ...
CONCLUSION Most warming is probably the result of  human activities. There will be positive and negative  (mostly) reper...
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  1. 1. GREEN HOUSE EFFECTANDGLOBAL WARMING ASHISH KUMAR AFB- 2011-13003
  2. 2. INTRODUCTION Global warming refers to the rising average temperature of Earths atmosphere and oceans. In the last 100 years, Earths average surface temperature increased by about 0.8 °C (1.4 °F) with about two thirds of the increase occurring over just the last three decades.
  3. 3. GREENHOUSE VS GLOBALWARMING The greenhouse effect & global warming are not the same thing.  Global warming refers to a rise in the temperature of the surface of the earth. An increase in the concentration of greenhouse gases leads to an increase in the the magnitude of the greenhouse effect. (Called enhanced greenhouse effect)  This results in Global warming
  4. 4. How Global Warming Works Carbon Dioxide (CO2)Fossil fuels (coal, oil, natural gas)
  5. 5. HOW CO2 CONNECTED TO GLOBALWARMING? Physically, via the greenhouse effect. The connection is usually made via the use of a climate model. If the scenario run results show warmer surface condition than the control, then it is plausible to suspect that the increasing CO2 concentration in the atmosphere may cause warming.
  6. 6. SELECTED GREENHOUSE GASES Naturally occurring amounts of greenhouse gases have a mean warming effect of about 33 °C (59 °F) The major greenhouse gases are water vapor which causes about 36–70 percent of the greenhouse effect Carbon Dioxide (CO2)  Source: Fossil fuel burning, deforestation  Anthropogenic increase: 30%  Average atmospheric residence time: 500 years
  7. 7. Methane (CH4) Source: Rice cultivation, cattle & sheep ranching, decay from landfills, mining Anthropogenic increase: 145% Average atmospheric residence time: 7-10 yearsNitrous oxide (N2O) Source: Industry and agriculture (fertilizers) Anthropogenic increase: 15% Average atmospheric residence time: 140-190 years
  8. 8. Example of the Greenhouse Effect The Sun’s energy passes through the car’s windshield.This energy (heat) istrapped inside the carand cannot pass backthrough the windshield,causing the inside of thecar to warm up.
  9. 9. GREENHOUSE EFFECTSun
  10. 10. Effects of Global Warming Rising Sea Level Increased Temperature Habitat Damage and Species Affected Changes in Water Supply
  11. 11. What’s the proof thatglobal warming is taking place?
  12. 12. Portage Glacier • Alaska 1914 2010Photos: NOAA Photo Collection and Gary Braasch – WorldViewOfGlobalWarming.org
  13. 13. Colorado River• Arizona June 2002 Dec 2008
  14. 14. What’s being done now to reduce our emissions?Wind Power Solar Power Fuel-Efficiency
  15. 15. We can stop global warming!Scientists agree that theburning of fossil fuels iscausing global warming.Since these fuels areburned for energy, andeveryone uses energy,everyone can help stopglobal warming just byusing less energy or energyfrom renewable sources!
  16. 16. How we can reduce global warming?
  17. 17. Simple Things To Do Turn off your computer or the TV when you’re not using it.Take shorter showers. Heating water uses energy. Keep rooms cool by closing the blinds, shades, or curtains.Turn off the lights when you leave a room. Use compact fluorescent bulbs.
  18. 18. Simple Things To Do Dress lightly when it’s hot instead of turning up the air conditioning. Or use a fan. keep the air filters on your AC and furnace clean. Walk short distances instead of asking for a ride in the car.Plant a tree. Recycle.
  19. 19. CONCLUSION Most warming is probably the result of human activities. There will be positive and negative (mostly) repercussions from global warming.
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