Causes, effects and solutions of ozone layer depletion. Ozone layer and the montreal protocol on substances that deplete the ozone layer united. The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. There, it will absorb almost all ultraviolet light which is harmful to many organisms. Read online causes of ozone layer depletion and its effects on human. The ozone hole in antarctica cool antarctica, pictures.
This site is like a library, you could find million book here by using search box in the header. Ppt ozone layer depletion powerpoint presentation free. The main cause of ozone depletion and the ozone hole is manufactured. Ozone layer introduction the ozone layer refers to the ozone within stratosphere, where over 90% of the earths ozone resides. Effects and measures to protect ozone layer depletion. Causes and effects of stratospheric ozone reduction. Learn about ozone depletion, its causes, and effects. Ozone o3 is a stratospheric layer that plays important role in providing support to humans for their survival.
These gases bring chlorine and bromine to the stratosphere, which cause depletion of the ozone layer. Questions and answers about the environmental effects of the ozone layer depletion and 4 climate change. 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. However, various factors have led to the depletion and damage of this protective layer. What effects does the depletion of ozone have on environmental processes and cycles. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride methyl chloroform. Newly detected ozonedepleting substances in the atmosphere pdf. Within the stratosphere, the ozone layer is the portion that contains the highest. There are many causes for ozone depletion, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and. Due to stratospheric ozone layer depletion uv radiations are penetrating in earth atmosphere which result in the production of reduced oxygen. The chlorofluorocarbon and the halons are potent ozone depletors. Questions and answers about the environmental effects of the. Factor of ozone depletion human activities in the last several decades have produced chemicals, such as chlorofluorocarbons cfcs. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion.
One of the main reasons for the widespread concern about depletion of the ozone layer. The troposphere extends from the surface up to about 10 km in altitude, although this height varies with latitude. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. 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. Questions and answers about the environmental effects of. Jan 20, 2010 this yearly occurrence is called the ozone hole. The problems and causes associated with ozone depletion arise from human activities. Ozone layer depletion pdf file the origin, causes, mechanisms and bio effects of ozone layer depletion as. The evaporation of surface water through the stomata of leaves increases, which results in the decreased moisture content of the soil. About depletion of the ozone layer is the anticipated increase in the amounts of. Ozone layer is a thin, fragileshield that contains relatively highconcentrations of ozone. Rivm report 481505011 technical report on stratospheric ozone. Mar 21, 2020 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. Highly reactive species like hydrogen peroxide is produced which has bad effects on human health.
But the one and the most important reason for ozone layer depletion is the production and emission of chlorofluorocarbons cfcs. Ptersa, p o box 915751, faerie glen, 0043, south africa. What are the causes and effects of ozone depletion. It is an essential factor for many global, biological and environmental phenomena.
The main things that lead to destruction of the ozone gas in the ozone layer. Effect of ozone layer disturbances on humans and environment researcher name. Natural causes of ozone depletion ozone depletion describes two distinct, but related observations. Let us have a detailed look at the various causes and effects of ozone layer depletion. The ozone hole and global warming union of concerned. An update 1982, by national research council commission on natural resources page images at nap filed under. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. Uv radiations are disturbing developmental and physiological processes which is decreasing the productivity of crops. Human activities cause ozone depletion and global warming. Ozone depletion facts and information national geographic. Depletion of ozone layer is also causing the problem of food shortage to humans. It is revealed that introduction of chlorof lourocarbons cfcs in the environment is the most rated cause of said depiction. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer.
The earths atmosphere is composed of several layers. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. In fact, a major hole in the ozone layer above the antarctica skyline now threatens the continent badly. It will magnify the effects of ultraviolet rays on human health. The ozone layer was doomed until a handful of scientists stood up. Why the hole in the atmospheric ozone layer above us. Find ozone depletion stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. Since ozone absorbs uv radiation, having less ozone in the stratosphere means more uv radiation will reach the troposphere. Jun 04, 2016 this video contains a tutorial on why ozone layer depletion takes place. There have been several concerns about ozone depletion. A free powerpoint ppt presentation displayed as a flash slide show on id. The origins of uncertainty about the factors that affect the ozone layer are, as seen, very diverse. This ozone layer sustains life on the earth by absorbing a great deal of uv ultra violet light radiating out of sun. When volcanoes erupt, they produce massive clouds of ashes into the troposphere, and then they drift upward into the stratosphere the upper atmosphere layer where ozone gas protects humans from uv radiation.
There are plenty of causes and effects of ozone depletion, cfc emission being one. Yes, an international consensus about the causes and effects of ozone depletion has emerged. Questions and answers about the effects of the depletion of the ozone layer on humans and the environment. 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 ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. However, while both the ozone depletion and the ozone hole effects are different they share a common causal process which is thought to be responsible for both. Unfortunately, cfcs can eventually find their way into the earths atmosphere and the ozone layer. The causes, mechanism and bio effects of ozone layer depletion on humans were addressed. Ozone depletion simple english wikipedia, the free encyclopedia. Ian grimmond ozone layer depletion when you walk outside, there is a pale blue molecule up in the stratosphere that is protecting you every second of every day of your life, this molecule is called ozone.
It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause. 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. May 03, 2017 ozone layer is a thin blanketlike layer that spreads over the atmosphere of the earth. It shields the entire earth frommuch of the harmful uv radiationthat comes from the sun 3. Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. Ozone layer protection european commission european union. Ozone layer depletion causes and effects of ozone layer. Chapagain and others published atmospheric ozone layer depletion and its impact, find, read and cite all.
Ozone layer depletion cause, effects, and solutions. Basic ozone layer science ozone layer protection us epa. Effect of ozone layer disturbances on humans and environment. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Ozone o 3 depletion does not cause global warming, but both of these environmental problems have a common cause. Thousands of new, highquality pictures added every day. Ozone depletion consists of two related events observed since the late 1970s. What are the effects of pollution on the ozone layer. In a study conducted to determine secondary school students knowledge of the relationship between vehicle traffic and environmental problems, it was found that. But many researchers do not agree with these predictions,14 and express their.
The chlorine and bromine compounds that cause significant depletion of the ozone layer are cfcs, carbon. Both are essential for life but air also protects all of us and it is therefore understandable that the response to the depletion of the ozone layer became international. Man has tried hard to deploy protective measures towards controlling the ozone layer from depletion,but this is so. Pdf there are many situations where human activities have significant effects on the environment. Causes and effects of ozone layer depletion that are painfully true the ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. The lowest layer, the troposphere tropospherethe region of the atmosphere closest to the earth. It is ideal photochemical maker due to its long life and stability. Ppt ozone layer depletion powerpoint presentation free to.
This causes greater risk of skin cancer and cataracts. Ozone is a molecule consisting of three oxygen atoms o3 and has the property of being highly toxic because of its radioactivity. Ozone layer depletion, its causes and its effects ozone. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause of said depiction. Ozone layer depletion effects on the environment effects on nonhuman animals a november 2010 report by scientists at the institute of zoology in london found that whales off the coast of california have shown a sharp rise in sun damage, and these scientists fear that the thinning ozone layer is to blame.
Ozone layer depletion, its causes, effects and control measures. Reducing the use of ozone depletion substances ods. Ozone layer depletion can have some serious consequences on effects of human health, plants, marine ecosystems, biogeochemical cycles and earths environment. Third, depletion of stratospheric ozone and global warming due to the build up of greenhouse gases interact to alter uvr related effects. Ozone is an irritating, corrosive, colorless gas with a smell something like burning electrical wiring. The term ozone depletion can refer to a number of distinct, but related phenomena. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner. Ozone depletion is primarily caused by human activities. With depletion in ozone s layer, we humans are more prone to uv rays that reaches the earths surface. Ozone layer depletion and its effects 1575 words 7 pages. The main effect of ozone depletion is an increase in uvb rays reaching the earths surface. In comparison with the earlier assessments on effects oracle essentials oracle database 11g pdf of openoffice edit pdf files ozone depletion, the present. Although natural phenomena can cause temporary ozone loss, chlorine and bromine released from manmade compounds such as cfcs are now accepted as the main cause of this.
Unlike oxygen o2, ozone has a strong scent and is blue in color. It may cause an increase in human diseases such as skin cancers and cataracts. Do ozone depleting gases and their substitutes have an effect on climate. Ozone layer depletion, its causes and its effects free download as powerpoint presentation. Ozone blocks ultraviolet radiation ozone depleting substances are. The ozone hole in antarctica the seasonal thinning of the ozone layer of the earths atmosphere above antarctica, so allowing abnormal amounts of ultraviolet light to reach the earths surface in those regions. Causes of ozone depletion depletion of the ozone layer is due to the emission of a set of chemicals that cause ozone to convert into oxygen. Depletion of ozone in the stratosphere causes health and environmental risks indirectly. To the point where a seasonal hole in the ozone layer began to appear above the antarctic. One of the greatest and most dangerous effects of pollution on the ozone layer is that it creates holes in the atmosphere, which allow powerful ultraviolet rays from the sun to reach the earths surface. Ppt ozone layer depletion authorstream presentation.
Ozone depletion is the process of destruction of the ozone layer which can cause adverse effects on the living forms by many pollutants releases out from the vehicles, industries etc. The earths ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30. What links here related changes upload file special pages permanent link. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. Learn more about the process, causes, and effects of ozone layer depletion. Questions and answers about the effects of the depletion. Ozone depletion is allowing the uv radiation to earth surface. Protection against depletion of stratospheric ozone by chlorofluorocarbons. Ozone depletion, greenhouse gases, and climate change, by national research council page images with commentary at nap.
Certain industrial processes and consumer products result in the emission of halogen source gases to the atmosphere. Ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is tipped in favour of destruction. There are many situations where human activities have. An international consensus about the causes and effects of ozone depletion has emerged. Ozone blocks ultraviolet radiation ozonedepleting substances are.
Another most feared aspect of pollution is depletion of ozone layer of the stratosphere. What emissions from human activities lead to ozone. Ozone layer depletion causes, effects and solutions 7. Ozone is a gas that is present in the ozone layer in the stratosphere of the earth. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in. It allows only the required doses of the suns solar energy to reach the earths surface. Pdf causes of ozone layer depletion and its effects on. This bad ozone forms when sunlight initiates chemical reactions. The depletion of the ozone layer 1593 words 7 pages. 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.
Cfcs get banned in 1974 scientists sherry rowland and mario molina discovered the link between the depletion of the ozone layer and cfcs. It is ideal photochemical maker due to its long life and stability 1 34. Causes of ozone layer depletion and its effects on human. 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. Frequently asked questions about the ozone layer ozone. Experts blame ozonelayer depletion on manmade chem icals containing. The thinning is most pronounced in the polar regions, especially over antarctica.
Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. Ozone layer depletion effects on the environment effects on nonhuman animals a november 2010 report by scientists at the institute of zoology in london found that whales off the coast of california have shown a sharp rise in sun damage, and these scientists fear that the thinning ozone layer is. What is an ozone hole and causes and effects of ozone. The envelope of air or different types of gases surrounding the earth is known as atmosphere. The ozone layer protects the surface of the earth and its phenomena from stray rays from the sun. The stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on earth from. Oct 12, 2008 ozone depletion by clarisse, suleyman and suzy. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. Pdf atmospheric ozone layer depletion and its impact.
What emissions from human activities lead to ozone depletion. The formation of the ozone holes is different to the generalized ozone depletion effect observed around more equatorial zones where higher concentrations of humans exist. The proteins cells in plants undergo harmful mutations, all due to ultraviolet radiations. If interested, you can purchase this powerpoint from my. At the end of 20, 258 projects have been committed for an. What we all need to understand is the idea that we all are going to have to face the repercussions of ozone layer depletion. Project report on ozone depletion environmental pollution. Changes to global climate and harmful effects to plant life are also concerns. Stratospheric ozone depletion, ultraviolet radiation and. All books are in clear copy here, and all files are secure so dont worry about it. Causes and effects of ozone layer depletion that are. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The ozone layer acts as a natural filter, absorbing most of the suns burning ultraviolet uv rays.
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