Wednesday, March 11, 2009

Global Warming - Task 2

Global warming is the rise of the earth’s temperature above the normal rate .Most of the marked increase in the rate of global temperature appears to be a result of the increase in greenhouse gases as a result of activities carried out by human beings. The land and climate scientists say the temperature of the atmosphere will drop to -15 degrees Celsius, rather than the current average temperature +15 degrees Celsius. The atmosphere plays a key role in organizing the above average temperatures. Part of the heat coming from the sun goes back into space and is mostly kept at the bottom of the airspace surrounding the cover. These lower layers from the air contain water vapor, carbon dioxide, methane, and other gases. It is warming the bottom of the atmosphere to radiate heat back on the surface of the earth.
This phenomenon is called global warming or the greenhouse effect. With the increase in temperature the seas and oceans evaporate . If the weather is warm or dry, it can accommodate quantities of water vapor . The greater the proportion of water vapor in the air means increased global warming,because the water vapor retains heat . In the Himalayas there are 20 glacial lakes in Nepal and 24 glacial lakes in Bhutan which have melted and the water threatens crops and property with flooding for ten years to come. With the beginning of the industrial revolution, the rising concentration of atmospheric carbon dioxide makes the earth hotter than before. As well, carbon dioxide interacts in the atmosphere with water which results in acid rain, which could lead to loss of vegetation.
A team believes that greenhouse gases are the cause behind global warming, and the rates of increase of greenhouse gases increases air pollution arising from natural pollutants (volcanoes, forest fires and persistent organic pollutants) and industrial pollutants resulting from human activities in the use of energy (oil, coal, natural gas ), and logging and deforestation, and this leads to increased emission of greenhouse gases.
Since we are not able to intervene in the natural pollutants, we need to reduce the man-made pollutants . Japan hopes to be able to reduce emissions of greenhouse gases and combat the phenomenon of global warming, it has a plan to pump carbon dioxide into underground storage reservoirs instead of release into the atmosphere. To address global warming, we need to force factories polluting the environment to absorb the polluting gases.
If we think about the matter carefully, we will find ourselves the guilty party, and where each of us can be found on the surface of this planet, we have to reduce the real amount of energy as well as reducing environmental pollution. For example, the possibility of generating electricity using wind or solar radiation is called green and clean. We can also use public transport instead of private cars and we can reduce the number of unnecessary trips in cars and planes. We can also reduce the water usage & close the computers which we are not using.
The Japanese asked their community not to wear neckties in order to reduce the need for conditioning in the summer on the job. The Scandinavian people use bicycles to go to work and recreation as well. In well-insulated buildings, much less energy is needed for winter heating and summer cooling.

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