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The Ozone Layer |
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by Seyara Vidanagamage | 28-05-2022 20:50
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The Ozone Layer
 The Ozone Layer is a gas that surrounds the Earth's atmosphere. It's located in the stratosphere, 15 to 35km above Earth's surface. The ozone layer acts as a barrier between Earth and ultraviolet radiation from the Sun. Some oxygen molecules that contain two atoms absorb energy from the Sun's UV (Ultraviolet) rays and split to form a single oxygen atom. These single atoms mix with oxygen with two atoms and forms the Ozone layer. However pollution has caused the ozone layer to thin. This is a huge threat to life on Earth. Ozone depletion is particularly marked in the Antarctic Region. This is mostly known as the "Ozone Hole". Ozone Hole was discovered in 1948 by Jonathan Franklin, Joseph Farman and Brian Gardiner. The ozone acts as the Earth's sunscreen; absorbing 98% of the damaging UV light. Chemicals called chlorofluorocarbons (CFC) are the primary culprits of the ozone layer breakdown. CFC gases are mostly produced by refrigerators, air conditioners and fire extinguishers. UV rays can cause damages in DNA, which may result mutation, ageing of the skin and skin cancers. Recognizing the effects of the ozone layer depletion, an international treaty, know as The Montreal Protocol was signed at Montreal, Canada in 1987. Which came effective from 1989 to control the emission of ozone-depleting substances. Many more efforts have been made and wearies protocols have been maid separately for developed and developing countries for reducing the emission of CFCs. |
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2 Comments
Hello Seyara, this is your mentor Chelwoon.
In the distant past, creatures started to appear after the ozone layer was formed around the earth. It indicates that the ozone layer is an essential shield to protect creatures, including humans, from harmful electromagnetic waves.
However, although some substances have been prohibited from use, many chemical substances are still destroying the layer. CFC is one of the refrigerants used in heat pumps such as refrigerators and air conditioners. I would like to recommend our ambassadors buy and use refrigerators operated with alternative refrigerants.
Thank you for the article!
Regards,
Chelwoon
Posted 31-05-2022 00:51
Hello Seyara, this is your mentor Joon.
We need to keep adequate level, or density of ozone layer as it serves as a natural sunscreen for all around the earth. However, Ozone holes were discovered, due to the excessive pollutants. However, there have been some positive new that tells the ozone layer is recovering thanks to the efforts trying to reduce the use of harmful gases. Hope humans could keep on sustaining the level as it is. Please state the source of contents and images for further articles!
Best,
Joon
Posted 30-05-2022 22:25