Sep 17, 2012 seminar organised to preserve the ozone layer posted on september 17, 2012 by friendsofvrindavan under its ecoschool programme, friends of vrindavan and the bhaktivedanta gurukula and international school vrindavan celebrated the international day for ozone layer preservation at the bgis school campus by organizing a seminar with the gurukulis. The vienna convention for the protection of the ozone layer. What is the connection between ozone depletion and climate change. These gases bring chlorine and bromine to the stratosphere, which cause. The layer of ozone gas is what which protects us from the harmful ultraviolet radiations of the sun. The ozone in this region is commonly known as the ozone layer. The ozone layer prevents most ultraviolet uv and other highenergy radiation from penetrating to the earths surface. The ozone layer is found in the lower portion of the earths atmosphere. Ozone secretariat the secretariat for the vienna convention for the protection of the ozone layer and for the montreal protocol on substances that deplete the ozone layer united nations environment programme nairobi, kenya ozone. Ozone layer ozone layer research papers discuss the depletion of the the ozone layer in the atmosphere.
Ppt ozone layer depletion powerpoint presentation free. 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. But our atmosphere is still vulnerable, and it is not clear whether the ozone layer of the future will look like the ozone layer we had in the past. There is a burgeoning need to reduce the production of industrial products causing ozone depletion and global warming. The vienna convention for the protection of the ozone layer 3 2. Pdf ozone depletiona warning of global warming researchgate. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
The buildup of oxygen in the atmosphere led to the formation of the ozone layer in the upper atmosphere or stratosphere. Ozone is formed by photochemical reaction, followed by three body reaction. It has the potential to absorb around 9799% of the harmful ultraviolet radiations coming. Jul 02, 2015 this quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion.
We seem to have avoided a future where there is no protective ozone. Handbook for the montreal protocol on substances that. The ozone layer is mainly found in the lower portion of the stratosphere. Why the ozone layer is vital to life on earth the ozone layer is a protective shield that blocks the suns harmful ultraviolet rays from reaching the earths surface. Ozone is a colourless gas which is found in the stratosphere of our upper atmosphere. It contains high concentration of ozone o 3 in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. As a result the total amount of ozone remains constant. The term ozone depletion can refer to a number of distinct, but related phenomena. Seminar organised to preserve the ozone layer friends of. The layer closest to the earths surface is the troposphere. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. Frequently asked questions about the ozone layer epa. Ozone is a gas that occurs both in the earths upper atmosphere and at ground level. Jan 30, 2012 the ozone layerthe ozone layer is a deep layer in thestratosphere, encircling the earth,that has large amounts of ozone in it.
Access information on research and technical resources related to ozone layer science. Ozone in the ozone layer is formed by the action of solar ultraviolet light on oxygen. The ozone layer and its depletion linkedin slideshare. It is found largely in the stratosphere that extends from about 6 km at the poles and 17 km at the equator to about 50 km above the earths surface. What emissions from human activities lead to ozone depletion. Ozone layer research and technical resources us epa. Since about the 1970s, there has been a decrease in total volume of the ozone in the ozone layer, of about 4%, per decade. Ozone layer depletion causes, effects and solutions 7.
There are natural processes that create and destroy ozone in the stratosphere. These gases bring chlorine and bromine to the stratosphere, which cause depletion of the ozone layer. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in. The purpose of this seminar is to help article 5 countries smoothly phase out ods such as cfcs. Ozone layer depletion penn state college of earth and. Ozone depletion simple english wikipedia, the free. Protecting the ozone layer department of the environment.
It addressed the im portance of conservation of ozone layer and established. The ozone layer was discovered in 19 by the french physicists. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Project report on ozone depletion environmental pollution. The stratosphere is home to the ozone layer that protects life on earth from intense ultraviolet radiation.
Although ozone is present in small concentrations throughout the atmosphere, most around 90% exists in the stratosphere, a layer 10 to 50 kilometres above the earths surface. Find out what caused the ozone hole, and how the 1989 montreal. Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer. It will take generations before we know how the experiment turned out. For nearly a billion years, ozonemolecules in the atmosphere haveprotected life on earth from theeffects of. The ozone layer helps to protect life from harmful ultraviolet radiation. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion.
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. Ozone is an irritating, corrosive, colorless gas with a smell something like burning electrical wiring. However, because it occurs in such a low concentration, its vulnerable to ozonedepleting chemicals, such as cfcs. The ozone layerthe ozone layer is a deep layer in thestratosphere, encircling the earth,that has large amounts of ozone in it. 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. Nearly 500 organizations, teams, and individuals from 40 countries have received stratospheric ozone protection awards for their exceptional leadership, personal dedication, and technical achievements. Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. Ozone depletion, gradual thinning of earth s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.
Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet uv radiation from the sun. These forms of application are used singly or in combina. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Jun 19, 2017 the best sleeping position for back pain, neck pain, and sciatica tips from a physical therapist duration. Ozone layer depletion ozone layer depletion the effect on the world the effect of ozone layer depletion often seems as if it is a far away problem, given that the actual holes in this protective blanket over the earths atmosphere are concentrated around the poles and far from most human settlements. A close look at the evolution at the life on earth reveals that initially. Pdf causes of ozone layer depletion and its effects on. This page provides links to research efforts led by organizations such as the national oceanic and atmospheric administration, the united nations environment program, an. Presentation on ozone depletion linkedin slideshare. Certain industrial processes and consumer products result in the emission of halogen source gases to the atmosphere. The ozone layer has been identified in term papers as important in the overall spectrum of the atmosphere.
Ozone is a gas that is present in the ozone layer in the stratosphere of the earth. August 1 96 dec 15 96 nasa goddard space flight center you will have to wait to see this movie in class. The carbon dioxide that is released is the cause of the greenhouse effect as it traps heat in the earths atmosphere thereby. The ozone layer is a region in the earths stratosphere that contains high concentrations of ozone and protects the earth from the harmful ultraviolet radiations of the sun. 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. The most commonly known example is the ozone layer, in which ozone is produced by ultra violet rays uv, which derive from the sun.
National seminar on plant science and human welfare. It covers the entire planet and protects life on earth by absorbing harmful ultravioletb uvb radiation from the sun. Burning fossil fuels fossil fuels such as coal, oil, and gas consist largely of carbon and hydrogen. In your ozone layer term paper, consider how greenhouse gases contribute to the deletion of the ozone layer and promulgate global warming. Address by the special guest of the seminar on the eve of international ozone day viiiaddress by the chairperson of the seminar on the eve of international ozone day ix address ofnvelcome. Ozone is also formed during thunderstorms, in water falls and allthough this is a less natural process in photochemical smog which forms in summer. Ozone layer, region of the upper atmosphere, between roughly 15 and 35 km 9 and 22 miles above earths surface, containing relatively high concentrations of ozone molecules.
A free powerpoint ppt presentation displayed as a flash slide show on id. Causes of ozone layer depletion and its effects on human. Ozone layer depletion cause, effects, and solutions. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the. Integrating oxygenozone therapy into your practice forms of application to oral tissue are applied 1 ozonated water, 2 ozonated olive oil, and 3 oxygenozone gas. The layer shields the entire earthfrom much of the harmful ultravioletradiation that comes from the sun. Since about the 1970s, there has been a decrease in total volume of the ozone in the ozone. Ozone layer research papers on the depletion of the the. When highenergy ultraviolet rays uvc strike an oxygen. When there was no ozone layer, life could only exist in the sea. Mar 21, 2020 ozone depletion, gradual thinning of earth s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. If interested, you can purchase this powerpoint from my online store. Ozone absorbs a band of ultraviolet radiation called uvb.
Every year, in october, a huge hole in atmospheric levels of ozone is observed over the antarctic. The best sleeping position for back pain, neck pain, and sciatica tips from a physical therapist duration. 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. The severe depletion of the antarctic ozone layer known as the ozone hole occurs because of the special meteorological and chemical conditions that exist there when the very low winter temperatures in the antarctic stratosphere cause polar stratospheric clouds pscs to form which are isolated from stratospheric air in the polar vortex. The third body m absorbs the excess energy liberated by the above reaction and there by stabilise the o 3 ozone molecule. The ozone layer in the stratosphere is thin but powerful. Ozone layer research papers on the depletion of the the ozone. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to about 50 km about 30 miles above earths surface.
Ozone depletion simple english wikipedia, the free encyclopedia. Ozone depletion, gradual thinning of earths ozone layer caused by the release of chemical compounds containing gaseous chlorine or. The process that we call burning actually is chemical reactions with oxygen in the air. When there was no ozone layer, life could only exist in. Carbon dioxide is the major contributor to global warming. To this end the parties shall, in accordance with the means at their disposal and their capabilities.
Under average conditions, at ground level, each cm of ah contains around 10 19 molecules of all the gases present of which ozone concentration is about 0. Unlike oxygen o2, ozone has a strong scent and is blue in color. The ozone layer, located in the upper stratosphere 10 50 km above the earths surface, plays the highly important role in protecting life on this planet by absorbing harmful ultraviolet light uvb with wavelengths of between 280315nm. Ppt ozone layer depletion powerpoint presentation free to. 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 ozone depleting substances ods. The ozone layer or ozone shield is a region of earths stratosphere that absorbs most of the suns ultraviolet radiation. It is also one of the prime reasons which are leading to global warming. Ozone layer introduction the ozone layer refers to the ozone within stratosphere, where over 90% of the earths ozone resides.
Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The thinning is most pronounced in the polar regions, especially over antarctica. A seminar on the depletion of the ozone layer, presented by ozoagu peter cj. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Ozonated water and olive oil have the capacity to entrap and then release oxygenozone, an ideal delivery system. The troposphere is the layer where most weather activity. Ozone depletion and climate change environment canada. Protection seminar for its worldwide operations, which are based in. Why the hole in the atmospheric ozone layer above us. Environmental chemistry 401 carbon dioxide crosses the delicate proportion of 0. Besides carbon dioxide, other greenhouse gases are methane, water vapour, nitrous oxide, cfcs and ozone. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. However, the ozone layer is destroyed by manmade chemicals known as ozonedepleting substances ods. In thunderstorms, ozone forms as a result of the high.
The vienna convention for protection of ozone layer was adopted by 43 nations in 1985. Ozone layer depletion is one of the most serious problems faced by our planet earth. Ppt a seminar on the depletion of the ozone layer, presented by. There, it will absorb almost all ultraviolet light which is harmful to many organisms. List of books and articles about ozone layer online. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. What emissions from human activities lead to ozone. Many organizations perform research on the ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone.441 1388 105 1522 1003 27 409 1532 243 254 1322 988 1216 359 932 923 1240 416 690 720 716 1432 1232 405 1594 1014 612 1069 283 435 479 303 566 1090 623 944