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CLIMATE CHANGE
GREENHOUSE EFFECTS
The Earth is heated by sunlight and some of the heat that is absorbed by the Earth is radiated back into space.
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However, some of the glassy gases in the lower atmosphere allow incoming solar radiations (in the range 300 - 2500nm) but do not allow Earth to radiate heat back into space. .
In other words, these gases in the atmosphere are transparent to incoming sunlight
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but they strongly absorb infrared radiation, which the Earth emits back as heat.
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As a result, the Earth's surface gets warmed by a phenomenon called the "green house effect
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As a result, the Earth's surface gets warmed by a phenomenon called the "green house effect
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The gases responsible for the greenhouse effect are CO2, water vapor, CH4, and man-made CFC
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if the concentration of greenhouse gases is high, they can trap too much heat which can lead to excessive heating of the earth, i.e. global warming.
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1. Rise in temperature on the earth's surface due to the high level of CO2.
2. Adverse effect on world food production.
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consequences
3. Rise in sea level due to the melting of polar ice caps.
4. A decrease in the biological productivity of oceans.
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consequences
1. Reduction in the use of fossil fuels.
2. Use of alternative sources of energy.
3. Protection of forests, extensive deforestation.
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Minimization
4. Reduction in the use of automobiles and development of more efficient automobile engines.
5. Ban on CFC and nuclear explosions.
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Minimization