Monday, May 25, 2009

Global Warming and ecological decline - Task7



The global warming is a new expression which means the increase in the average temperature of the Earth.
To address this matter we should go back to the source; many scientists attribute these phenomena to the excessive industrial waste of carbon dioxide emissions.
Most of the scientists do agree that there is mounting evidence which continues to accumulate that Carbon dioxide or CO2 from fuel burning is causing interference in the earth’s climate, resulting in the earth’s temperature rising, according to their latest studies.( http://www.env.gov.bc.ca/epd/bcairquality/glossary/index.html).
They found that some of the glaciers with ice thousands of years old are disappearing and melting at an alarming pace and the average temperature of the earth is rising with what they refer to it as the Greenhouse Effect, which traps heat in the lower part of the earth’s atmosphere, causing the temperature to rise (http://news.bbc.co.uk/1/hi/sci/tech/4315968.stm)
Normally earth receives energy from the sun in the form of radiation; earth in return reflects about 30% of the incoming solar radiation. The remaining 70% is absorbed, warming the land and the ocean.
For the earth's temperature to be steady the earth does not fluctuate rapidly between hot and cool. Therefore, any changes in the 30% or the 70% range will have a great effect on the balance of nature. (http://yaleglobal.yale.edu/environment/?gclid=CIv_4vTxzJoCFYV_3god6H_0RQ)
The scientists’ studies attribute the earth getting hotter to excess carbon dioxide emissions into the atmosphere, which will result in disasters like hurricanes, droughts and floods becoming more frequent as it was noticed in the last 100 years; because the average temperature of the air near the earth's surface has risen a little less than 1 degree Celsius according to the latest data.
This rapid increase in the earth temperature is man-made, not caused by a natural fluctuation of the earth’s climate due to the solar cycles and natural climate changes.
So it's up to all of us to extend a helping hand to our earth which is the only place in the universe so far we could survive, by reducing our carbon dioxide emissions, growing more trees and not destroying our forests.



Bibliography:
1-
http://www.websters-online-dictionary.org/Gl/Global+Warming.html
2-
http://yaleglobal.yale.edu/environment/?gclid=CIv_4vTxzJoCFYV_3god6H_0RQ
3-
http://news.bbc.co.uk/1/hi/sci/tech/4315968.stm
4-
http://www.env.gov.bc.ca/epd/bcairquality/glossary/index.html
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