Fgases used in air conditioners in cars, the socalled mac directive. This study was conducted at university of gujrat during 20142015 as a term paper for master of philosophy. It can be found in small concentrations in the troposphere where it is considered a pollutant. Since there is no other known source of chlorine monoxide, finding this chemical in the upper atmosphere would strongly support. No design or tech skills are necessary its free, easy, and awesome. The condition of the ozone layer is a heated topic in such conversations. Causes, effects and solutions of ozone layer depletion. The ozone depletion potential odp of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane r11 or cfc11 being fixed at an odp of 1. Ozone shown to be a natural atmospheric constituent. Displaying powerpoint presentation on the ozone layer formation and depletion available to view or download. Ozone depletion facts and information national geographic.
Ozone depletion consists of two related events observed since the late 1970s. This free powerpoint template helps you to grasp the attention of your viewers towards the importance, effects and causes of ozone layer depletion. Ppt effects of ozone depletion powerpoint presentation. But many researchers do not agree with these predictions,14 and express their. Ozone is ozone is a form of oxygen with 3 oxygen atoms o3. Graphs and diagrams slides to give professional look to you presentation. From cambridge english corpus the whole appliance is continually vented with forced air to prevent ozone accumulation in the path of the beam. The ozone story presentation ozone secretariat unep ozone distribution in the atmosphere scientific background i history 1839.
Stratospheric ozone depletion is a concern because the ozone layer in the stratosphere keeps 9599% of the suns ultraviolet radiation from striking the earth. The depletion of the ozone layer has thus resulted in the birth of a fear in everybodys minds. Policy responses to ozone depletion mario molina and sherwood rowland showed in 1974 that cfc gases destroy ozone coordinating committee on ozone layer ccol established by unep in the 1970s vienna convention for the protection of the ozone layer held in 1985. View and download powerpoint presentations on depletion of ozone layer ppt. October average for total ozone over antarctica, 19551995 based on british measurements from weather balloons. Cfc 11, or r11 has the maximum potential amongst chlorocarbons because of the presence of three. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Ozone depletion free download as powerpoint presentation. Be effective with your business documentation by using our depletion of ozone layer word document template. Download affordable depletion of ozone layer editable powerpoint template now. Total bromine from halons has decreased from a peak of 8. Ozone layer depletion ozone depletion chlorofluorocarbon.
Ozone layer depletion has been one of the major concern for the scientists of the world. In 1985, using satellites, balloons, and surface stations, a team of researchers had discovered a balding patch of ozone in the upper stratosphere, the size of the united states, over antarctica. Project report on ozone depletion environmental pollution. Chlorodifluoromethane r22, for example, has an odp of 0. The problems and causes associated with ozone depletion arise from human activities. This is not a forum for general discussion of the articles subject. The ozone layer formation and depletion powerpoint presentation. Ozone depletion potentials odps were a very important measure in the formulation of the montreal protocol and its amendments. Find out what caused the ozone hole, and how the 1989 montreal. This ozone layer sustains life on the earth by absorbing a great deal of uv ultra violet light radiating out of sun. The atmosphere is mostly transparent to the visible except for scatter.
The answers are updates of those first presented in the previous ozone assessment, scientific assessment of ozone depletion. Why the hole in the atmospheric ozone layer above us. There have been several concerns about ozone depletion. Ozone depletion eric lin, cody lu natalie qin, silvia shi the ozone layer is essential to organisms because it protects them from harmful effects of the. When this breakdown of the ozone layer occurs, the earth stands more vulnerable as it. Testing the hypothesis of ozone depletion 3 of 3 chlorine monoxide is one of the products of ozone destruction. Use the information in the summary tab as a starting place. The ozone layer helps to protect life from harmful ultraviolet radiation.
Experiments show that ozone strongly absorbs solar ultraviolet uv radiation. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Temperature of the stratosphere is a key factor, as is sunlight, in the depletion of ozone. Unlike oxygen o2, ozone has a strong scent and is blue in color. Ozone absorbs a band of ultraviolet radiation called uvb. What is important to keep in mind is the fact that prevention of ozone layer depletion is so very important because it directly affects the well being of the people. Therefore many governments are taking measures to prevent ozone depletion. Principal steps in the depletion of stratospheric ozone. The ozone layer was discovered in 19 by the french physicists. Internet resources for both ozone information, and neat digitized images of the antarctic ozone hole. Greenhouse gases and ozone hole temperature and ozone take home points continued anthropogenic release of greenhouse gases, not only cfcs, into the atmosphere will enlarge the ozone holes, letting more harmful uv rays reach the earths surface. Now, you can easily use our professionally predesigned ozone layer depletion powerpoint template to cover it all and serve information to your intended audience. Download s depletion of ozone layer microsoft word template design now.
Ozone depletion also explains much of the observed reduction in stratospheric and upper tropospheric temperatures. The ozone hole grows and decreases every year with. Depletion of ozone layer editable word template and design. Be effective with your powerpoint presentations by using our depletion of ozone layer powerpoint presentation template. It contains some videos and gif at thte end from an external source. The adobe flash plugin is needed to view this content. Due to this, it is also taking a toll on our health and the environment. Scientific assessment of ozone depletion 2006 twenty. Ozone depletion ozone depletion chlorofluorocarbon. Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer.
This is the talk page for discussing improvements to the ozone depletion and climate change article. Policy responses to ozone depletion mario molina and sherwood rowland showed in 1974 that cfc gases destroy ozone coordinating committee on ozone layer ccol established by unep in the 1970s vienna convention for the protection of the ozone layer held in 1985 montreal protocol to ban substances that. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. Chapte r ozone depletion potentials, global warming. If you would like to discuss your ideas or need help troubleshooting, use the ask an expert forum. The obtained data include the survey of the atmospheric ozone and its trends, including seasonal ozone depletion in the polar regions. Themes for 1998 powerpoint presentation free to download id.
Ppt ozone layer depletion authorstream presentation. The ozone layer sits in the stratosphere between 15 km and 30 km. Near the ground, ozone forming as a result of chemical reactions involving traffic pollution and sunlight may cause a number of respiratory problems, particularly for young children. Effects and measures to protect ozone layer depletion. For this science project you will need to develop your own experimental procedure. Another most feared aspect of pollution is depletion of ozone layer of the stratosphere. Our powerpoint presentation about ozone depletion, its effects and its causes. Most questions and answers are updates of those presented in previous ozone assessments, while others have been added or. Safeguarding the ozone layer and the global climate system. Gwps including indirect effects of ozone depletion have been estimated fo r a variety of halocarbons cfcs, halons, hcfcs, etc. Nearly 500 organizations, teams, and individuals from 40 countries have received stratospheric ozone protection awards for their exceptional leadership, personal dedication, and technical achievements. Ppt protection of the ozone layer montreal protocol. A free powerpoint ppt presentation displayed as a flash slide show on id. The latter phenomenon is referred to as the ozone hole.
The ozone layer is mainly found in the lower portion of the stratosphere. This printable depletion of ozone layer editable word template is available for easy to use. This helps you give your presentation on depletion of ozone layer in a conference, a school lecture, a business proposal, in a webinar and business and professional. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl. Ozone layer depletion powerpoint template sketchbubble. Normal ozone ozone layer depletion and its effects. Pdf causes of ozone layer depletion and its effects on. Ozone and environment ozone o3 a gas composed of three atoms of oxygen bluish gas that is harmful to breathe nearly 90% of the earths ozone is in the stratosphere and is referred to as the ozone layer ozone absorbs a band of ultraviolet radiation called uvb ozonedepleting substances ods.
What we all need to understand is the idea that we all are going to. Download the ozone layer formation and depletion ppt for free. Powerpoint is the worlds most popular presentation software which can let you create professional depletion of ozone layer powerpoint presentation easily and in no time. Formation and depletion effect of the montreal protocol on stratospheric cl sunlight incident on earth is very roughly. The ozone layer refers to a region of earths stratosphere that absorbs.
Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. The questions address the nature of atmospheric ozone, the chemicals that cause ozone depletion, how global and polar ozone depletion occur, and what could lie ahead for the ozone layer. Causes of depletion, status and recovery of the ozone layer. The world meteorological or ganization wmo, 1995 predicted that the depletion of the ozone layer peaked around 1998 and the layer would slowly recover by 2045 12. This timeline highlights the average area of the ozone hole between september 7th and october th as observed by nasa spacedbased instruments see colored bars and scale. Ppt ozone layer depletion powerpoint presentation free. Introduction under the montreal protocol on substances that deplete the ozone layer, article 7 of the protocol. Ozone layer depletion free download as powerpoint presentation. The main reasons of this depletion are the release of organohalogen compounds like chlorofluorocarbons and bromofluorocarbons. Ppt ozone depletion powerpoint presentation free to. Protecting the ozone layer while also preventing climate change. The net gwps of halocarbons depend strongly upon the effectiveness of each compound for ozone destruction. The ozone depletion has led to a worldwide concern as the thinning protective coat over earth is letting harmful ultraviolet light pass.
Depletion of ozone layer powerpoint template comes with different editable charts. Causes of ozone layer depletion and its effects on human. British atlantic survey research station, holly bay, antarctic coast. Find powerpoint presentations and slides using the power of, find free presentations research about depletion of ozone layer ppt. Ozone layer depletion penn state college of earth and. Depletion of the ozone layer and its impacts canada. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the. Effects of ozone depletion 1 effects of ozone depletion 2 the discovery. Depletion begins with the emission of halogen source gases from anthropogenic uses and. Our experts wont do the work for you, but they will make suggestions and offer guidance if you come to them with specific questions.