Length: 6 Pages 1553 Words

In this paper, evidence will show how ozone layer depletion is a problem. Harmful chemicals, produced by man, and nature, effect the ozone layer, a part of the earth’s atmosphere. The earth has environmental problems, and ozone layer depletion is just one of them. The ozone layer is a layer of irritating, corrosive, colorless gas that absorbs 97-99% of the sun’s high frequency ultraviolet light, which is damaging to life on earth. ( Sparling, “Ozone Depletion”) Ozone layer depletion’s history dates back to as early as 1956. In 1956, the first ground based measurements were taken in Halley Bay, Antarctica. The in the 1970’s, satellite measurements were started. The first comprehensive worldwide satellite measurement happened in 1978 with the NIMBUS-7 satellite. The NIMBUS-7 carried on it two things, the TOMS (total ozone mapping spectrometer), and the SBUV (solar backscatter UV meter). The NIMBUS-7, along with other instruments, measured the amount of chlorofluorcarbons in the atmosphere. Chlorofluorcarbons were first created in 1928 as a non-toxic, non-flammable refrigerant, by a commercial company called DuPont. CFC-12 was the first type of chlorofluorcarbon (1 single carbon w/ 2 chlorines, & 2 fluorine Continue...

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Based on this study, an estimation of about 7 of ozone would be depleted in the next years, lead to the U. Whether or not ozone depletion is a problem is a large controversial issue. This law instructs industries to regulate the use of class 1 and 2 halocarbons. Most of the depletion of the ozone layer is caused by chlorine, a result of human activities. We do not think out pregnant women, or future pregnancies, and how ozone depletion causes birth defects. Ozone photolysis is when highly energetic solar radiation strikes O2, or oxygen molecules, and causes the two oxygen atoms to split apart. (National Academy of Sciences) Everytime you cool yourself down on a hot summer day with an air conditioner, or reach for a cold drink out of the refrigerator, just think, you're depleting the ozone a little more at a time. Man-made agents such as car emissions, and aerosol sprays are some of the major sources of NOX and VOC. Many people believe that yes, there is a problem with ozone layer depletion. 49 of NOX, and 37 of VOC in the atmosphere comes from car emissions. The ozone layer is w very important aspect of the earth as a whole.


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Ozone Depletion. CFC's contribute to the greenhouse effect as well as to the changes predicted in the distribution of ozone (Miller and Mintzer). (2115 8 )

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Ozone Depletion. Ozone Depletion The Earth's upper atmosphere contains a layer of ozone. These elements attack the ozone molecules (Fisher, 1990, p. 54). (3023 12 )

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Ozone Depletion. Ozone Depletion The Earth's upper atmosphere contains a layer of ozone. These elements attack the ozone molecules (Fisher, 1990, p. 54). (3313 13 )

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Ozone. Ozone is a gas found throughout the atmosphere, and is most highly concentrated between 10 and 50 km above sea level (Global). (333 1 )

OZONE LAYER DEPLETION AND ITS EFFECTS. Ozone at this level of the earth's atmosphere is generated by the absorption of ultraviolet radiation by oxygen (O2). (1836 7 )