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Greenhouse
Effect
FRANCISCO VITORINO Nº3027
MANUEL ALCÂNTARA Nº2999
Index
 What is
 Who discovered
 Greenhouse gases
 Consequenses
 Video
 Conclusion
 Bibliography
What is Greehouse Effect
 Is a process by which thermal radiation
from a planetary surface is absorbed
by atmospheric gre...
Who discovered
 Jean Baptiste Joseph Fourier (21 March 1768 – 16
May 1830) was a French mathematician and
physicist born ...
Who discovered
 In the 1820s Fourier calculated that an object the size of the Earth, and at
its distance from the Sun, s...
Greenhouse Gases
 Carbon dioxide (CO2) - Fossil fuel use is the primary source of
CO2. The way in which people use land i...
Consequences
 More drought and more flooding
 Less ice and snow
 More extreme weather incidents
 Rising sea level
More drought and
more flooding
WHEN THE WEATHER GETS WARMER,
EVAPORATION FROM BOTH LAND AND
SEA INCREASES. THIS CAN CAUSE
...
Less ice and snow WORLDWIDE, GLACIERS ARE SHRINKING
RAPIDLY AT PRESENT. ICE APPEARS TO BE
MELTING FASTER THAN PREVIOUSLY
E...
more extreme
weather incidents
THE WARMER CLIMATE WILL PROBABLY
CAUSE MORE HEATWAVES, MORE
VIOLENT RAINFALL AND ALSO AN
IN...
Rising sea level
SEA LEVEL RISES BECAUSE OF MELTING ICE
AND SNOW AND BECAUSE OF THE
THERMAL EXPANSION OF THE SEA (WATER
EX...
Bibliography
 http://www.bgs.ac.uk/discoveringGeology/climateChange/CCS/consequencesOfTemperatureIncre
ase.html
 https:/...
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Greenhouse Effect

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Greenhouse Effect

  1. 1. Greenhouse Effect FRANCISCO VITORINO Nº3027 MANUEL ALCÂNTARA Nº2999
  2. 2. Index  What is  Who discovered  Greenhouse gases  Consequenses  Video  Conclusion  Bibliography
  3. 3. What is Greehouse 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  The temperature there is higher than it would be if direct heating by solar radiation were the only warming mechanism
  4. 4. Who discovered  Jean Baptiste Joseph Fourier (21 March 1768 – 16 May 1830) was a French mathematician and physicist born in Auxerre and best known for initiating the investigation of Fourier series and their applications to problems of heat transfer and vibrations. The Fourier transform and Fourier's Law are also named in his honor.
  5. 5. Who discovered  In the 1820s Fourier calculated that an object the size of the Earth, and at its distance from the Sun, should be considerably colder than the planet actually is if warmed by only the effects of incoming solar radiation.  He examined various possible sources of the additional observed heat in articles published in 1824 and 1827. Fourier's consideration of the possibility that the Earth's atmosphere might act as an insulator of some kind is widely recognized as the first proposal of what is now known as the greenhouse effect.
  6. 6. Greenhouse Gases  Carbon dioxide (CO2) - Fossil fuel use is the primary source of CO2. The way in which people use land is also an important source of CO2, especially when it involves deforestation. Land can also remove CO2 from the atmosphere through reforestation, improvement of soils, and other activities.  Methane (CH4) - Agricultural activities, waste management, and energy use all contribute to CH4emissions.  Nitrous oxide (N2O) - Agricultural activities, such as fertilizer use, are the primary source of N2O emissions.  Fluorinated gases (F-gases) - Industrial processes, refrigeration, and the use of a variety of consumer products contribute to emissions of F-gases, which include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6).
  7. 7. Consequences  More drought and more flooding  Less ice and snow  More extreme weather incidents  Rising sea level
  8. 8. More drought and more flooding WHEN THE WEATHER GETS WARMER, EVAPORATION FROM BOTH LAND AND SEA INCREASES. THIS CAN CAUSE DROUGHT IN AREAS OF THE WORLD WHERE THE INCREASED EVAPORATION IS NOT COMPENSATED FOR BY MORE PRECIPITATION. IN SOME REGIONS OF THE WORLD THIS WILL RESULT IN CROP FAILURE AND FAMINE ESPECIALLY IN AREAS WHERE TEMPERATURES ARE ALREADY HIGH. THE EXTRA WATER VAPOUR IN THE ATMOSPHERE WILL FALL AGAIN AS EXTRA RAIN, WHICH CAN CAUSE FLOODING IN OTHER PLACES IN THE WORLD.
  9. 9. Less ice and snow WORLDWIDE, GLACIERS ARE SHRINKING RAPIDLY AT PRESENT. ICE APPEARS TO BE MELTING FASTER THAN PREVIOUSLY ESTIMATED. IN AREAS THAT ARE DEPENDENT ON MELTWATER FROM MOUNTAIN AREAS, THIS CAN CAUSE DROUGHT AND LACK OF DOMESTIC WATER SUPPLY. ACCORDING TO THE IPCC, UP TO A SIXTH OF THE WORLD'S POPULATION LIVES IN AREAS THAT WILL BE AFFECTED BY MELTWATER REDUCTION.
  10. 10. more extreme weather incidents THE WARMER CLIMATE WILL PROBABLY CAUSE MORE HEATWAVES, MORE VIOLENT RAINFALL AND ALSO AN INCREASE IN THE NUMBER AND/OR SEVERITY OF STORMS.
  11. 11. Rising sea level SEA LEVEL RISES BECAUSE OF MELTING ICE AND SNOW AND BECAUSE OF THE THERMAL EXPANSION OF THE SEA (WATER EXPANDS WHEN WARMED). AREAS THAT ARE JUST ABOVE SEA LEVEL NOW, MAY BECOME SUBMERGED. SOME PACIFIC ISLAND NATIONS ARE EXPECTED TO BE COMPLETELY SUBMERGED BY THE END OF THE CENTURY. IN COUNTRIES WITH LARGE AREAS OF COASTAL LOWLAND THERE WILL BE A DUAL RISK OF RIVER FLOODS AND COASTAL FLOODING, WHICH WILL REDUCE THE AREA FOR LIVING AND WORKING. COASTAL DEFENCES WILL NEED TO BE STRENGTHENED, AND RIVER LEVEES WILL NEED TO BE DEVELOPED.
  12. 12. Bibliography  http://www.bgs.ac.uk/discoveringGeology/climateChange/CCS/consequencesOfTemperatureIncre ase.html  https://www.google.pt/imghp  http://www.epa.gov/climatechange/ghgemissions/global.html  http://environment.nationalgeographic.com/environment/global-warming/gw-overview-interactive/  http://en.wikipedia.org/wiki/Greenhouse_effect  http://en.wikipedia.org/wiki/Joseph_Fourier

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