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Global Warming

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Global Warming. Lawrence Lee, Gajan P. Nathan, Khadafy Mob. What is Global Warming? ... Average temperature may rise from 1.4 to 5.8 C by 2100. Temperatures of ... – PowerPoint PPT presentation

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Title: Global Warming


1
Global Warming
  • Lawrence Lee, Gajan P. Nathan, Khadafy Mob

2
What is Global Warming?
  • The gradual rise in average temperature
  • atmosphere
  • oceans
  • landmasses of the Earth

3
Temperatures of the Earth
  • Average surface temperature is 15C
  • Average temperature rose about 0.6C in the last
    100 years
  • Average temperature may rise from 1.4 to 5.8C by
    2100

4
Temperatures of the Earth
  • Accelerated warming during the last 20 years
  • Much of the increase in temperature within the
    past 50 years is caused by human activities

5
Natural Causes of Global Warming
  • More Cows More Methane
  • Volcanic eruptions release carbon dioxide

6
Human Causes of Global Warming
  • Burning of fossil fuels, such as oil and coal
  • Build up of greenhouse gases such as carbon
    dioxide helps insulate terrestrial radiation

7
The Greenhouse Gases
  • Carbon Dioxide
  • Burning of solid waste, fossil fuels, and wood

8
The Greenhouse Gases
  • Methane
  • Released during the production and transport of
    coal, natural gas, and oil
  • Nitrous Oxide
  • Released from agricultural and industrial
    activities

9
The Greenhouse Gases
  • Hydrofluorocarbons (HFCs)
  • From heavy Industries
  • Perflurocarbons and Sulfur Hexafluoride (PFCs)
    and (SF6)
  • From heavy Industries

10
Impacts on the Atmosphere
  • More frequent and intense storms
  • Worldwide precipitation increased by 1

11
Impact on the Lithosphere
  • Soil Moisture likely to decline
  • Increase in soil erosion

12
Impacts on the Hydrosphere
  • Glaciers will melt faster
  • Contributes to the rise of sea level
  • Sea levels may rise 9 to 88 cm in the 21st century

13
Impact on the Hydrosphere
  • Changes coastal ecosystems
  • Possibly more flooding

14
Impact on the Biosphere
  • The rate of extinctions may increase
  • Areas with more subtle/tolerable temperatures
    will decrease
  • More diseases infecting humans

15
General Impacts of Global Warming?
  • Possibly longer growing seasons and more rainfall
    in colder regions (i.e. Southern Canada)
  • More insects will plague the farms
  • Possibly more plant diseases

16
Possible Solutions
  • Reduce the production of greenhouse gases
  • Initiate reforestation projects

17
Possible Solutions
  • Store Carbon Dioxide underground
  • Use fuels that release less Carbon Dioxide
  • Use alternative energy that release no Carbon
    Dioxide (i.e. Nuclear Energy)

18
Possible Solutions
  • Conserve energy
  • Impose heavy taxes on energy usage
  • Reduce, Reuse, and Recycle

19
Global Example
  • The increase in temperature has contributed to
    the melting of glaciers in the Arctic
  • Sea level has risen and the fresh water supply
    will decrease

20
Regional Example
  • Rising temperature contributes to the increasing
    number of hurricanes

21
Local Example
  • Increase in the number of forest fires in BC
  • Increase evaporation

22
Works Cited
  • Hart, John. Global Warming. MSN Encarta
    Encyclopedia. Microsoft Corporation. 08 May 2004
    lthttp//encarta.msn.com/encyclopedia_761567022/Glo
    bal_Warming.htmlgt
  • Global Warming. World Book Encyclopedia. 2001
    ed. 232-233.
  • Global Warming Climate. EPAs Global Warming
    Site. 07 Jan. 2000. U.S. Environmental Protection
    Agency. 07 May 2004 lthttp//yosemite.epa.gov/oar/g
    lobalwarming.nsf/content/index.htmlgt
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