The vienna convention for the protection of the ozone layer 3 2. If you would like to discuss your ideas or need help troubleshooting, use the ask an expert forum. Its structure means that its much less stable than oxygen o 2, and is therefore much more reactive. Ozone can be bad every spring a hole in the layer of harmless ozone as big as the usa opens over antarctica, a smaller one develops over the arctic at the north pole this is the first signs that the ozone layer is. To the point where a seasonal hole in the ozone layer began to appear above the antarctic.
Management of ozonedepleting substances reported to the. It contains some videos and gif at thte end from an external source. The assessment documents the advances in scientific understanding of ozone depletion. Our powerpoint presentation about ozone depletion, its effects and its causes. 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. Therefore, the ozone depletion potentials odps of brominated compounds have increased proportionately. Ozone depletion is affecting the human health and environment negatively, as it allows the penetration of uv radiations to reach the earth.
Presentations ppt, key, pdf logging in or signing up. Or decrease in stratospheric ozone around earths polar region this phenomena is referred as ozone hole. 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. Ozone is a blockchainbased travel booking protocol set to disrupt the. A161ece the effects and causes of ozone depletion the ozone layer o 3 are ozone particles that are naturally occurring gas located at the stratosphere wherein it plays a major role in capturing high energy uv ultra violet rays emitted by the sun from reaching earth citation siv15 \l 1033. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Title vi for stratospheric ozone protection, signed into law. The thinning of the ozone layer has increased the risk that australians already face from overexposure to.
The ozone layer protects humans, animals, and plants from harmful ultraviolet rays. Ozone is a blockchainbased travel booking protocol set to disrupt the monopolistic legacy inventory distributors surrounding inventory providers airlines, hotels, car rentals ozone brings. British atlantic survey research station, holly bay, antarctic coast. For this science project you will need to develop your own experimental procedure. Update on ozonedepleting substances odss and other gases of. Very shortlived halogenated substances are of greater importance to stratospheric ozone depletion than previously estimated. Ozone layer depletion, its causes and its effects scribd. This is apparently found in the lowest region of the stratosphere.
The ozonedepletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. It covers the entire planet and protects life on earth by absorbing harmful ultravioletb uvb radiation from the sun. Why global mean surface temperatures began to rise around 1970 after having been relatively constant since 1945. It is formed of three oxygen atoms giving it the chemical formula, o 3. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Displaying powerpoint presentation on the ozone layer formation and depletion available to view or download. To this end the parties shall, in accordance with the means at their disposal and their capabilities. By 1985, the globe had already seen advancements in the scientific understanding of ozone depletion and its impacts on human health and the environment. Save energy and protect the environment with co2 solutions. Ozonedepleting substances reported to tri many class i and class ii ozonedepleting substances are included on the tri chemical list, and hence, the quantities released to the environment or otherwise managed as waste are reportable to epas tri program. Scientific assessment of ozone depletion 2006 twenty. Occurs when ozone depleting substances catalyze ozone destroying reactions.
We care about ozone depletion because a thinner ozone layer allows more uv radiation to reach the earths surface. This is good ozone which filters out uvb radiation. Moreover, the ozone layer remains constant because. The fact sheet series is aimed at students involved in key stage 4 of the national.
The uv intensity on the surface of the earth fluctuates from day to day and depends on where you live. The natural distribution of ozone around the earth is. 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. With the implementation of refrigerant regulations like the kigali amendment to the montreal protocolglobal and fgas regulative europe, the quest for alternative solutions is accelerating. Fire extinguishers contain halons and methyl bromide in the form of pesticides can also be also a cause for the depletion. In addition, all figures are available for download, in three formats. Essay ozone depletion is a serious problem presently facing the world. Protecting the ozone layer department of the environment. The montreal protocol 1 deals with substances that deplete the ozone layer ods and how to reduce them montreal protocol, 1987 and amendmentsadjustments.
Total bromine from halons has decreased from a peak of 8. View and download powerpoint presentations on ozone ppt. Blockchain can help with tracking, verifying ownership, ensuring accuracy of documents, and transferring property deeds it can also speed up transactions, reducing the need for paperbased record keeping. The ozone layer protects living things from harmful ultraviolet rays from the sun. The danger and prevention of ozone layer depletion. Effects of ozone depletion ozone depletion is affecting the human health and environment negatively, as it allows the penetration of uv radiations to reach the earth. The latter phenomenon is referred to as the ozone hole. Ozone depletion is when cfcs, or chlorofluorocarbon molecules, react.
Ozone exists within both the tropospheric and stratospheric zones of the earths atmosphere in the troposphere, ground level ozone is a major air pollutant and primary constituent of photochemical smog in the stratosphere, the ozone layer is an essential protector of life on earth as it absorbs harmful uv radiation before it reaches the earth. All of the assessment documents core assessment report, executive summary, and twenty questions and answers about the ozone layer. Scientific assessment of ozone depletion montreal protocol. The subtropical ground ozone concentration in northern hemisphere is twice the corresponding region in southern hemisphere 5. The ozone hole grows and decreases every year with. The series is divided into three sections the science of ozone depletion 10, the impacts of ozone depletion 6, and managing ozone depletion 4. These reduced ozone levels have increased the amount of harmful ultraviolet radiation reaching earths surface. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. Ozone depletion causes increases in uv rayss effects on aquatic ecosystems by.
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. Our experts wont do the work for you, but they will make suggestions and offer guidance if you come to them with specific questions. Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer. Ozone depletion ozone depletion a global crisis squamous basal melanoma montreal protocol meeting of 36 nations to cut emissions of cfc s aimed to reduce emissions by 35% between. 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. Ozone o 3 is a gas which is present naturally within earths atmosphere.
The exposure to these radiations is severely affecting all life forms on earth, especially the humans. Money and time are being spent on ozone repair, but the problem still exists. Global sustainable why choose co 2 transcritical refrigeration. Ozone absorbs a band of ultraviolet radiation called uvb. Together, they describe what ozone, the ozone layer, ozone depletion and the ozone hole are, how ozone depletion occurs, mankinds influence, its impacts, and. Aug 01, 2016 the term ozone depletion means more than just the natural destruction of ozone damage in the ozone layer will naturally mean the entry of harmful rays in to the atmosphere. At the end of 20, 258 projects have been committed for an. Increased levels of humanproduced gases such as cfcs chlorofluorocarbons have led to increased rates of ozone destruction, upsetting the natural balance of ozone and leading to reduced stratospheric ozone levels. The thinning of the ozone layer has increased the risk that australians already face from overexposure to uv radiation from an outdoor lifestyle. Ozone depletion ozone depletion chlorofluorocarbon. Download the ozone layer formation and depletion ppt for free.
Zero ozone depletion and lowest possible gwp equal to one. Pdf causes of ozone layer depletion and its effects on. Emissions accumulation transport chemical reaction conversion removal polar stratospheric clouds increase ozone depletion by reactive halogen gases, causing severe ozone loss in polar regions in winter and spring. The ozone layer is mainly found in the lower portion of the stratosphere, about 20 to 30 km 12 to 19 miles above the earth, though the thickness varies seasonally and geographically. Ozone depletion free download as powerpoint presentation.
Project ozone layer depletion pdf the stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on earth from. Ozone depletion is allowing the uv radiation to earth surface. Effects of ozone depletion 1 effects of ozone depletion 2 the discovery. Find powerpoint presentations and slides using the power of, find free presentations research about ozone ppt. Ppt ozone layer depletion powerpoint presentation free. The vienna convention for the protection of the ozone layer. Chapagain and others published atmospheric ozone layer depletion and its impact, find, read and cite all. The term ozone depletion means more than just the natural destruction of ozone damage in the ozone layer will naturally mean the entry of harmful rays in to the atmosphere. Ppt ozone depletion powerpoint presentation free to. Ground ozone concentration is lower in polar and equatorial regions. Ppt ozone layer depletion authorstream presentation.
The ozone layer is a region of the stratosphere containing ozone, or o3 gas. Downloads scientific assessment of ozone depletion 2018. The ozone layer forms a most important part of the earths stratosphere as it can absorb most of the uv radiation and prevent it from reaching the surface of the earth. As a result, there has been a general thinning of the ozone layer over most of the globe, including between five to nine per cent depletion over australia since the 1960s. Ozone depletion chapter 2 ozone depletion chapter 2 ozone layer a layer in the stratosphere that is made of ozone o3 absorbs ultraviolet light from the sun, protects organisms from damage. Its consequences, the causal debate, and international cooperation number 6 february 8, 1988 since the announcement of a thinning of the ozone layer over the antarctic by uk scientists in 1985, world attention has been focusing on the causes of this phenomenon. Scribd is the worlds largest social reading and publishing site. The answers are updates of those first presented in the previous ozone assessment, scientific assessment of ozone depletion. Cheaper tickets for end customers reducing booking costs up to lox enhanced placement for airlines flexible and affordable even for lowcost carriers. These days its easy to check on the local uv index, which tells you how intense the uv radiation is in your area.
Causes of ozone layer depletion and its effects on human. These radiations can cause severe diseases in humans such as skin cancer, eye damage and genetic mutations etc 9. Presentation on ozone depletion linkedin slideshare. It was then that the vienna convention for the protection of the ozone layer was created in response. This is the cause for the nearly 80% of the ozone depletion. 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 representations. Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth. Use the information in the summary tab as a starting place.
Ozone layer depletion, its causes and its effects free download as powerpoint presentation. Twenty questions and answers about the ozone layer noaa esrl. Thus, ozone layer depletion has become a major concern among the environmentalists. In response to the prospect of increasing ozone depletion, the governments of the world crafted the 1987 united nations montreal protocol as a global means to address this global issue. Translate ozone implementation requirements contained in the 1990 clean air act amendments written specific for the 1hour standard into meaningful. The ozone depletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. Overexposure to uv radiation can cause a range of health effects, including skin damage skin cancers and premature aging, eye damage including cataracts, and suppression of the immune system. Ozone depletion potential ozone depletion potential odp is a measurement of cfcs and hcfcs ability to destroy ozone. Ozone depletion potential odp reduction of ozone concentration in the stratosphere. And, most important, we know that if ozone depleting gases were to continue to accumulate in the atmosphere, the result would be more depletion of the ozone layer. This document, twenty questions and answers about the ozone layer. Ppt effects of ozone depletion powerpoint presentation. Cfcs has led to a magnified springtime depletion of the protective ozone layer at both earths poles, especially over antarctica, a phenomenon well known as the ozone hole. 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.
The ozone layer refers to a region of earths stratosphere that absorbs most of the. Significant anthropogenic production of such substances could increase ozone depletion. Ozone depletion describes two distinct but related phenomena observed since the late 1970s. Pdf atmospheric ozone layer depletion and its impact.
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