You can find maps of the ozone layer and compare different regions of the globe for ozone coverage. Depletion of this layer by ozone depleting substances ods will lead to higher uvb levels, which in turn will cause increased skin cancers and cataracts and potential damage. Project report on ozone depletion environmental pollution. The ozone layer environmental sciences fair project. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in the amounts of ultraviolet radiation received at the surface of the earth and the effect of this on human health and on the environment. Cochairs of the 2018 scientific assessment panel sap of the montreal protocol on substances that deplete the ozone layer are dr. Nasa researchers prefer the term depletion over the arctic, since despite the ozone layers record low this year, the ozone loss is still much less than the annual ozone hole that occurs over antarctica in september and october during southern hemisphere spring. Concern about a depleting ozone layer dates back to the 1970s. The main things that lead to destruction of the ozone gas in the ozone layer.
Low temperatures, increase in the level of chlorine and bromine gases in the upper stratosphere are some of the reasons that leads to ozone layer depletion. Ozone layer depletion powerpoint template sketchbubble. Ozone depletion, ozone hole, ultraviolet radiation. Get the latest updates on nasa missions, watch nasa tv live, and learn about our quest to reveal the unknown and benefit all humankind. Testing the hypothesis of ozone depletion 3 of 3 chlorine monoxide is one of the products of ozone destruction. Investigate different fossil and alternative fuels and their effect on the ozone layer. The methodology vm0016 recovery and destruction of ozonedepleting substances ods from products was developed by usg umweltservice gmbh and energy changes projektentwicklung gmbh. The earths ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone. The term ozone depletion means more than just the natural destruction of ozone, it means that ozone loss is exceeding ozone creation. Ozone depletion over india with so much worry about the rapid ozone depletion taking place in various parts of the earth, indian scientists are closely monitoring the ozone layer over india for possible depletion trends.
Ozone depletion facts and information national geographic. Ozone o 3 is a stratospheric layer that plays important role in providing support to humans for their survival. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Ozone depletion was a good articles nominee, but did not meet the good article criteria at the time. Ozone layer depletion increases the amount of uvb that reaches the earths surface.
Humans have introduced gases and chemicals into the atmosphere that have rapidly depleted the ozone layer in the last century. Learn more about the process, causes, and effects of ozone layer depletion. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in the amounts of ultraviolet radiation received. Ozone depletion, gradual thinning of earths ozone layer in the upper atmosphere caused by the release of chemical compounds containing. The ozone layer helps to protect life from harmful ultraviolet radiation. This layer absorbs the radiations and prohibits them from entering the outer surface of the earth. Since there is no other known source of chlorine monoxide, finding this chemical in the upper atmosphere would strongly support the idea that chlorine is destroying ozone. Discover more publications, questions and projects in ozone depletion. The thinning is most pronounced in the polar regions, especially over antarctica. The ozone layer has been identified in term papers as important in the overall spectrum of the atmosphere. Now, you can easily use our professionally predesigned ozone layer depletion powerpoint template to cover it all and serve information to your intended audience.
The chlorofluorocarbon and the halons are potent ozone depletors. After thinning at alarming rates in the 1980s and 90s, the ozone layer over antarctica is starting to recover. Fahey of the noaa earth system research lab esrl chemical sciences division, usa, dr. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the stratosphere. Environmental sciences fair project the ozone layer projects by grade level. The ozone layer resides in the stratospheric layer of the earths atmosphere. Research and monitoring project, world meteorological organization, geneva. Assessment of the effects of ozonedepleting substances and other ozonerelevant substances, if any, with stratospheric influences, and their degradation products, the identification of such substances, their ozonedepletion potential and other properties. Looking back over the scientific investigation of ozone depletion, we can see how the molinarowland hypothesis evolved with new data. Nasa reports arctic stratospheric ozone depletion hit. This happens when the chlorine and bromine atoms in the atmosphere come in contact with ozone and destroy the ozone molecules. In the past decade, we have come across constant news about depletion of the ozone layer. The layers which occupy the lower part of the atmosphere removes the unwanted pollutants from. The evolution of stratospheric ozone policy can be understood as a twostage process.
Limiting future n 2 o emissions would enhance the recovery of the ozone layer from its actual state and would also. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Let us see some of the important causes and effects of ozone layer depletion. One chlorine can destroy 100,000 molecules of ozone. For nearly a billion years, ozone molecules in the atmosphere have protected life on earth from the effects of ultraviolet rays.
Putting additional ozonedestroying compounds such as cfcs into the atmosphere is like increasing the size of. Sarah doherty of cires at the university of colorado and. New methodology approved to recover and destroy ozone. In your ozone layer term paper, consider how greenhouse gases contribute to the deletion of the ozone layer and promulgate global warming. Two years later, they adopted the montreal protocol on substances that deplete the ozone layer. Ozone depletion, gradual thinning of earths ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. At that time, the ozone layer is reduced to as little as 100 dobson units, or about the thickness of a dime. Since it was discovered, this ozone hole has grown larger in each successive antarctic winter before it disappears in the summer. The emission of ozonedepleting gases are threatening the earths ozone layer. Health and environmental effects of ozone layer depletion epa.
Ozone depleting substances are those substances which deplete the ozone layer. Timeline of stratospheric ozone depletion and observations. Global ozone research and monitoring projectreport no. Basic ozone layer science ozone layer protection us epa. This page replaces the former stratospheric ozone and human health project sedac web site which had included the following. Environmental studies ozone depletion tutorialspoint. Once these issues have been addressed, the article can be renominated. Ozone depletion ozone depletion ozone layer recovery. Unit 4 project amelia shae, olive ann parker, and peyton thompson. Ozone layer demonstration project the more cfcs water there are in the earth bottle the faster holes will form in the ozone layer gum and it will be destroyed. The 1987 montreal protocol on substances that deplete the ozone layer began the phaseout of cfcs in 1993 and sought to achieve a 50 percent reduction in. It is applicable to project activities in any country that recover and destroy ods refrigerants, ods blowing agents or both. Ozone layer research papers on the depletion of the the. Ozone depletion potential an overview sciencedirect topics.
Is there a difference in ozone coverage between different hemispheres. Environment protection amendments to principal rules. The ozone layer protects living things from harmful ultraviolet rays from the sun. It was first identified in 1970s due to the advent of supersonic aircraft, which fly in the lower stratosphere and emit nitrogen oxides.
Causes and effects of ozone layer depletion that are. When chlorine nitrate, a chemical that ties up chlorine in an ozonesafe form, was added to the hypothesis, the expected amount of ozone loss decreased. Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth. Ozone depletion describes two related events observed since the late 1970s. There are suggestions below for improving the article. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. The ozone layer resides in the stratosphere and surrounds the entire earth. However, various factors have led to the depletion and damage of this protective layer. Newman of the nasa goddard space flight center, usa, dr. This protocol has its own financial mechanism, the multilateral fund, which helps developing countries comply with the protocol. Ozone layer depletion cause, effects, and solutions. Editors may also seek a reassessment of the decision if.
The natural distribution of ozone around the earth is. Watch how ozone concentrations in the stratosphere have changed from 1979 through 2018. My goal is to simulate the effects of ozone depletion. Ozone depletion refers to the wearing out or reduction of the amount of ozone in the stratosphere. If increasing trends of odss had continued through to 2020, the wmo project. Ozone depletion is largely a result of manmade substances. The ozone hole is usually measured by reduction in the total. Ozone layer depletion is the thinning of the ozone layer present in the atmosphere. Ozone layer depletion is the gradual thinning of the earths ozone layer in the upper atmosphere caused due tho release of chemical compounds containing gaseous bromine or chlorine from industries or other human activities.
Ozone layer is a layer in the earths atmosphere which. Determine if the concentration of ground level ozone will decrease as you move away from a highway. Bonfils safari of the college of science and technology, university of rwanda, kigali. The condition of the ozone layer is a heated topic in such conversations. It is postulated that the combined effect of aircraft halogen nitrate fertilizers and effluent would considerable depletion of the ozone layer and could result in an increase in ultraviolet radiation reaching the earth tending to crop damage and marked rise in cases of skin cancer. I would like to do a science fair project demonstrating the effects of uv radiation on plant growth. Ozone layer depletion causes, effects and solutions 7.
By contrast, annual anthropogenic n 2 o ozone depletion potentialweighted emissions were the fourth most important in the 1980s. Can the ozone gas created by a tesla coil be used to purify water. Research and impact reports, nearreal time uv dose estimates using toms ozone data, the thematic guide on ozone depletion and global environmental change, human health data resources, related internet resources, ultra violet interactive service uvis, and bibliographic. The recognition of the dangers presented by chlorine and bromine to the ozone layer spawned an international effort to restrict the production and the use of cfcs and other halocarbons. Model studies suggest that this is related to the near constancy of stratospheric ozonedepleting gases during this period.
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