What are the causes and effects of ozone depletion. Certain industrial processes and consumer products result in the emission of halogen source gases to the atmosphere. 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. Ozone layer depletion is one of the most serious problems faced by our planet earth. The thinning is most pronounced in the polar regions, especially over antarctica. Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer. Are you looking for seminar for ozone layer depletion. These gases bring chlorine and bromine to the stratosphere, which cause depletion of the ozone layer.
Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. 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. When there was no ozone layer, life could only exist in the sea. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. This is found everywhere, especially in plastics and refrigerants and.
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. The ozone layer is mainly found in the lower portion of the stratosphere. 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. It sets binding obligations for countries to phase out production of all the major ozone depleting substances.
Detection of ozone layer depletion using image processing. Causes of ozone layer depletion and its effects on human. Ozone is a colourless gas which is found in the stratosphere of our upper atmosphere. The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Cfcs nonflammable nontoxic trap heat good insulators. Ozone layer is very important for human health and other living beings as it protects living beings from harmful ultraviolet rays from the sun.
The ozone layer is a belt of the naturallyoccuring gas ozone that sits. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to. Ozone depletion is largely a result of manmade substances. 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.
Technical report on stratospheric ozone depletion4 qylurqphqwdodvvhvvphqw,qwurgxfwlrq a description of the state of the ozone layer and the causes and effects have recently been discussed in europes environment 1998 and in the eu98 report 1999. 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. This layer absorbs the radiations and prohibits them from entering the outer surface of the earth. The ozone layer helps to protect life from harmful ultraviolet radiation. Frequently asked questions about the ozone layer ozone.
Since about the 1970s, there has been a decrease in total volume of the ozone in the ozone. A seminar on the depletion of the ozone layer, presented by ozoagu peter cj. The ozone layer resides in the stratospheric layer of the earths atmosphere. Ozone layer depletion 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. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Carbon dioxide is the major contributor to global warming. The central hatchurcd area represents the antarctic ozone hole, as mapped by the. Learn what cfcs are, how they have contributed to the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Unlike oxygen o2, ozone has a strong scent and is blue in color. Indias integrated approach to protect the ozone layer. Ozone depletion simple english wikipedia, the free encyclopedia.
Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. Humans have introduced gases and chemicals into the atmosphere that have rapidly depleted the ozone layer in the last century. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. The main effect of ozone depletion is an increase in uvb rays reaching the earths surface causes. However, because ozone absorbs solar radiation and is a greenhouse gas, ozone changes and climate change are linked in important ways. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. 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. Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth. There are many situations where human activities have. 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.
Seminar organised to preserve the ozone layer friends of. A free powerpoint ppt presentation displayed as a flash slide show on id. Find answers to frequently asked questions about the ozone layer, ozone depletion, and the effects of ozone depletion on health and the environment. It protects us from harmful uv rays that can have serious effects on animals, biodiversity and peoples health, including skin cancer and eye cataract. Experts blame ozonelayer depletion on manmade chem. National seminar on plant science and human welfare. Ozone layer depletion powerpoint template sketchbubble. Bangladesh perspective published in national dailies observance of international ozone day, 1998. Data shows that stratospheric concentrations of ozone. As a result the total amount of ozone remains constant. 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. Ppt ozone layer depletion powerpoint presentation free to. Ground ozone concentration is lower in polar and equatorial regions.
What emissions from human activities lead to ozone depletion. Ozone absorbs a band of ultraviolet radiation called uvb. It is an essential factor for many global, biological and environmental phenomena. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to about 50 km about 30 miles above earths surface. Environmental chemistry 401 carbon dioxide crosses the delicate proportion of 0. There, it will absorb almost all ultraviolet light which is harmful to many organisms. Ozone layer depletion is the thinning of the ozone layer present in the atmosphere.
The layer of ozone gas is what which protects us from the harmful ultraviolet radiations of the sun. Ozone layer depletion penn state college of earth and. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. 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. This is due to excessive amounts of chlorofluorocarbons cfc. Simply, ozone depletion is the depletion or deterioration of ozone layer, the layer which is found in the lower portion of the stratosphere 0 to 30 km 12 to 19 miles above the earth. 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. Ozone o3 is a stratospheric layer that plays important role in providing support to humans for their survival. No, ozone depletion itself is not the principal cause of climate change. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. Is depletion of the ozone layer the principal cause of climate change.
The increase in the levels of uv rays lead to high rate of skin cancer and eye related problems. Ozone is a gas that is present in the ozone layer in the stratosphere of the earth. In fact whole world is vulnerable to its after affects. Since about the 1970s, there has been a decrease in total volume of the ozone in the ozone layer, of about 4%, per decade. Now, you can easily use our professionally predesigned ozone layer depletion powerpoint template to cover it all and serve information to your intended audience. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. Stratospheric ozone depletion leads to an increase in uvb that reach the earths surface, where it can disrupt biological processes and damage a number of materials the fact that uvb can cause biological effects is well demonstrated by the familiar sunburn that follows overexposure to the sun. When there was no ozone layer, life could only exist in.
Ozone layer depletion cause, effects, and solutions biology. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Ozone depletion, gradual thinning of earths ozone layer caused by the release of chemical compounds containing gaseous chlorine or. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Ozone depletion facts and information national geographic. Ozone layer depletion michelle mattos block 1 the issues the problem with our ozone layer, as i said before, is that it is getting very very thin. Extensive overviews of the current scientific understanding. The increase of ultraviolet light due to depletion of the ozone layer will not only.
The natural distribution of ozone around the earth is. The ozone hole is considered to be formed when the concentration of. Project report on ozone depletion environmental pollution. Nearly 500 organizations, teams, and individuals from 40 countries have received stratospheric ozone protection awards for their exceptional leadership, personal dedication, and technical achievements. The concern is because of the fact that the ozone layer plays a protective role, screening the earth from harmful ultraviolet radiations. We have been running oneday summer seminars on ozone depletion since 2009. Why the hole in the atmospheric ozone layer above us. At the seminar information about the problems of ozone layer depletion, effects of excessive ultraviolet.
Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. Awareness and knowledge on the ozone depletion and its outreach. The ozone hole is shown in purple above the antarctic on sept. The ozone layer acts as a natural filter, absorbing most of the suns burning ultraviolet uv rays. Besides carbon dioxide, other greenhouse gases are methane, water vapour, nitrous oxide, cfcs and ozone. The layers which occupy the lower part of the atmosphere removes the unwanted pollutants from. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Timeline of stratospheric ozone depletion and observations. Ppt a seminar on the depletion of the ozone layer, presented by. The ozone layer is a belt of the naturallyoccuring gas ozone that sits at an altitude of between 15 and 30 kilometers above the earth. Protecting the ozone layer and reducing global warming undp. Indias integrated approach to protect the ozone layer introduction one of the most important environmental concerns the world faces today is of depletion of the ozone layer in the stratosphere. Ppt ozone layer depletion powerpoint presentation free. Lets have a look at some of the solutions to ozone layer depletion.
Pdf ozone depletiona warning of global warming researchgate. 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. Ozone layer depletion causes, effects and solutions 7. This depletion makes humans more vulnerable to the uvb rays which are known to cause skin cancer as well as other genetic deformities. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Report on ozone centers activities devoted to 16september. The subtropical ground ozone concentration in northern hemisphere is twice the corresponding region in southern hemisphere 5.
At the seminar information about the problems of ozone layer depletion, effects of excessive ultraviolet radiation on peoples health and environment, as well as how to. Causes, effects and solutions of ozone layer depletion. Ozone depletion and climate change environment canada. The purpose of this seminar is to help article 5 countries smoothly phase out. The term ozone depletion can refer to a number of distinct, but related phenomena.
It is also one of the prime reasons which are leading to global warming. We collected most searched pages list related with seminar. Is depletion of the ozone layer the principal cause of. On 28 th september kyrgyzrussian slavic university held a seminar problems of ozone layer depletion for students of 1,2,3,4 courses about 160 students took part. What emissions from human activities lead to ozone. The condition of the ozone layer is a heated topic in such conversations. In our present study, we shall discuss how ozone layer depletion is affecting human health and we shall also discuss some recommendations to minimize ozone depletion and its adverse effects on human health.
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