L2-Pressing+global+environmental+problems

L2-Pressing+global+environmental+problems - Overview of...

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Overview of Global Environmental Issues Questions to be addressed: s What are the most pressing global environmental problems that we are currently facing? s What are the root-causes of these environmental problems?
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Scope Survey: what are the most important environmental issues?
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Is Global Warming a real or just a big lie? Questions to be addressed: s What is the “global warming”? s What are the true root-causes of global warming? s Carbon emission – green house gases – blanket effect s Solar radiation activity – increased solar energy – regular oscillation process of solar system
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h a global increase in air/sea temperature: it is predicted that air temperature will increase by 1 ° C to 3.5 ° C by 2100. h Such global warming could lead to flooding of low lying areas, rise in water tables, further desertification, increase in environmental refugees. h But, despite warning from scientists, further increase in use of fossil fuels and hence increase in CO 2 emissions on a worldwide scale. Global Warming
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Annual surface temperature for the world
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Predicted annual average changes
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Green house effect
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Climate change – ocean circulation – extreme weather s Typhoons or Hurricanes s Ocean surface temperature changes s vertical transport of vapors and heat s formation of hurricanes s changes in hurricanes strength s Global warming – changes sea surface temperature s Balance of heat and water on our planet
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Differences btw hurricanes and typhoons (tropical cyclones) Hurricane Katerina Typhoon Talim and Typhoon Nabi typhoons hurricanes
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Major environmental problems
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Pollution: any addition to air , water, soil, or food that threatens the health, survival, or activities of living organisms s Effects of pollutants: s Disruption of life-support systems s Damage to wildlife, human health, property
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This note was uploaded on 12/21/2009 for the course BISC BISC003 taught by Professor Qian/ren/ko during the Fall '09 term at HKUST.

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L2-Pressing+global+environmental+problems - Overview of...

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