As results of ozone depletion, the increased ultraviolet solar radiation in turn would raise the temperature of the earth and thus effect line forms as well as the environment. The ozone levels have decreased to a normal. Cet ozone resulte de l'action de la lumiere du soleil sur les gaz d'echappement. Light is the ultimate cosmic force in this universe allowing man to progress and flourish. Over time, these substances accumulate in the atmosphere are carried by wind action into the stratosphere.
It affects process of photosynthesis in plants. This helps explain why there is less ozone in the Antarctic and Arctic polar regions. Ozone concentration differs by about 10 ppm in stratosphere compared to 0. The bromine and fluorine in these chemicals act as catalysts, reforming ozone O3 molecules and monatomic oxygen into molecular oxygen O2. It has a peak concentration 10 mg kg -1 in the stratosphere.
Since most of the mentioned crops are considered cash crops the economic aspect of lower crop yields could also spell disaster. Ozone hole reemerges above Atlantic. The London amendment to the Montreal Protocol was signed in May 1992 and came into effect on 10 August, 1992. Although ozone represents only a small fraction of the gas present in the atmosphere, it plays a vital role by shielding humans and other life from harmful ultraviolet light from the Sun. National Oceanic and Atmospheric Administration 1994. If, however, the cost associated with the.
Cfcs have a diminishing effect on the ozone layer. There is not just one particular cause for the ozone's depletion; the accumulation of different pollutants into our ozone layer has all added up and equalled out to create a worldwide problem. For example, he traveled to where the affects of global warming had taken place. However, too much exposure to this radiation presents us with a myriad of problems like sunburns, premature aging in some cases, eye damage and have been linked with skin. At last, The Montreal Protocol has resulted in stopping additional ozone loss and investigated by 300 experts ver 4 years survey on ozone depletion Earth Day was first observed on 22 April 1970. Various studies have been undertaken to find out possible solutions. Ozone depletion is listed as one of the causes for the declining numbers of amphibian species.
Some of the problems we face on earth are: deforestation, nuclear waste, acid rain, global warming, overpopulation and some animals are endangered. For examples, LensMan999 unknown stresses that the ozone depletion will lead an increase in the percentage of skin cancer and cataracts. Ozone located approximately 10-25 miles above the Earth's surface; in a part of the Earth's atmosphere called the stratosphere is very beneficial. We should take action to protect our ozone layer. Ozone Depletion The stratospheric ozone layer is the Earth's natural means of protection from… 739 Words 3 Pages The ozone layer is a specific area in the stratosphere of maximum ozone concentration.
At any given time, ozone molecules are constantly formed and destroyed in the stratosphere by natural processes. In this research paper I will give vital information on how pollution affects the ozone layer and methods instituted to help the ozone layer. This layer absorbs 97—99% of the Sun's high frequency ultraviolet light, which is potentially damaging to the life forms on Earth. The depletion of ozone layer will induce eye cancer in cattle. Since then the scientists have been regularly monitoring the thickness of the ozone layer. Let us take a look at some of the causes and effects of ozone layer depletion. Article shared by The upper layer of the atmosphere surrounded by ozone 15 to 30 Kms is known as ozonosphere.
The Earth's atmosphere is divided into several layers. The ozone layer shields the entire Earth from some of the harmful ultraviolet rays that come from the sun. As a result, both chlorine and bromine contribute significantly to the overall ozone depletion. Ozone layer depletion first captured the attention of the whole world in the latter half of 1970, and since then, a lot of research has been done to find its possible effects and causes. Ozone layer is a protective stratospheric layer, also known as ozone umbrella. This has brought about many debates concerning the differences between global warming and ozone depletion.
The ozone layer shields the entire Earth from some of the harmful ultraviolet rays that come from the sun. Studies also reveal that global warming may also contribute to ozone depletion. Stratosphere troposphere interactions: An introduction. On a per atom basis, bromine is even more efficient than chlorine at destroying ozone, but there is much less bromine in the atmosphere at present. An increase in ultraviolet light radiating towards plants accelerates the pace at which man must decide what to do with the dilemma of a booming and more importantly hungry population. For the protection of ozone layer, Vienna Conference in March, 1985 was held. If the ozone layer is depleted by human action, the effects on the planet could be catastrophic.
Ozone is a natural gas that occurs in the atmosphere Smith et al. Ozone is formed in the stratosphere when oxygen molecules photo dissociate after absorbing an ultraviolet photon whose wavelength is shorter than 240 nm. The chemical shorthand for these reactions are: For this mechanism to operate there must be a source of O atoms, which is primarily the photo dissociation of O3. The gray region broadly represents the evolution of ozone predicted by models that encompass the range of future potential climate conditions. Ozone is a hot, slightly bluish gas. The next layer, the stratosphere, continues from 10 to 50 kilometers. This leads to their breakdown and releasing of free chlorine atoms which reacts with the ozone gas, thus leading to the depletion of the ozone layer.
Examples are methyl bromide use in pesticides, methyl chloroform used on making industrial solvents, and halons used in fire extinguishers. These are often found in vehicle emissions, byproducts of industrial processes, refrigerants, and aerosols. Both of theserulings were recently either struck down or placed on hold byFederal Appeals Courts. The video was a good example of a persuasive essay because of its overall structure from attention-getter and visual aid to the conclusion and performance. Light, also, is the single most important factor influencing the growth and development of plants. The ozone layer absorbs a portion of the radiation from the sun, preventing it from reaching the planet's surface. This layer absorbs 93-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on earth.