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

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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

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The Greenhouse Gases

• Carbon Dioxide
• Burning of solid waste, fossil fuels, and wood

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The Greenhouse Gases

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

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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

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Possible Solutions

• Reduce the production of greenhouse gases
• Initiate reforestation projects

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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)

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Possible Solutions

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

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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