The ozone layer protects the surface of the earth and its phenomena from stray rays from the sun. 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. Recent findings by nasa about the accelerated rate of depletion of the upper atmospheric ozone layer are. Learn about the health and environmental effects of ozone layer depletion. The depletion of the ozone layer has multiple effects on your health, primarily negative. It allows only the required doses of the suns solar energy to reach the earths surface. Environmental effects of ozone depletion montreal protocol. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Ozone layer depletion can have some serious consequences on effects of human health, plants, marine ecosystems, biogeochemical cycles and earths environment.
This is due to excessive amounts of chlorofluorocarbons cfc. Learn more about the process, causes, and effects of ozone layer depletion. Cfc 11, or r11 has the maximum potential amongst chlorocarbons because of the. However, various factors have led to the depletion and damage of this protective layer. Introduction the ozone layer is a layer in earths atmosphere which contains relatively high concentrations of ozone o3. Health and environmental effects of ozone layer depletion epa. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. Two panels of experts give testimony on the current status of the earths ozone layer. Ozone layer depletion and its ill effects in australia. The chlorofluorocarbon and the halons are potent ozone depletors.
Has ozone depletion significant effects on human health. The thinning is most pronounced in the polar regions, especially over antarctica. The effects of ozone depletion on plants and animals massive amounts of uvb radiation that penetrate our atmosphere do not only affect humans, but also animals and plants. This ozone layer sustains life on the earth by absorbing a great deal of uv ultra violet light radiating out of sun. 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 layer depletion and its control measures zilwach. Ozone layer depletion, its causes and its effects free download as powerpoint presentation. Ozone layer depletion, its causes and its effects scribd. In 1977 it was the first time when ozone layer depletion and its consequences. Researchers indicate that many of the effects of ozone depletion on human health tend to apply for animals, too. Obtain and combine information about ways individual communities. Ozone depletion is allowing the uv radiation to earth surface. This is apparently found in the lowest region of the stratosphere. The ozone layer is a belt of naturally occurring ozone gas that sits 9.
For people, overexposure to uv rays can lead to skin cancer, cataracts, and weakened immune systems. Ozone depletion refers to the decline in, and thinning of, the ozone layer something which has been going on since the 1970s. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Ozone layer depletion is one of the most serious problems faced by our planet earth. Case study on ozone layer free download as powerpoint presentation. The proteins cells in plants undergo harmful mutations, all due to ultraviolet radiations. Ozone depletion facts and information national geographic. Unprecedented arctic ozone thinning drifts south in wired magazine online discusses the thinning of the ozone layer at the poles, why it happens, and the projected effects. Questions and answers about the environmental effects of the ozone layer depletion and. Causes of ozone layer depletion and its effects on human. Laboratory and epidemiological studies demonstrate that uvb causes nonmelanoma skin cancer and plays a major role in malignant melanoma development.
Do ozone depleting gases and their substitutes have an effect on climate. Ozone depletion describes two distinct, but related observations. 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. May 30, 2017 by knowing the statistics about ozone layer depletion, we can keep working hard at restoring our planet so that it is available for future generations to enjoy. Furthermore, this causes the presence of ozone in the lower atmosphere which is considered to be a pollutant. Oct 12, 2017 the depletion of ozone layer triggers a decrease in the ozone gas from the stratosphere.
Find ozone depletion stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. Students explore the causes and effects of the earths ozone holes through discussion and an interactive simulation. In spring 2011, an increase of 4050% in sunburn was observed in several arctic and scandinavian locations. This is found everywhere, especially in plastics and refrigerants and. Ozone layer depletion causes, effects and solutions 7. Thinning of the stratospheric ozone layer has been caused largely by longlived chlorine and bromine compounds. The evaporation of surface water through the stomata of leaves increases, which results in the decreased moisture content of the soil. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Chlorodifluoromethane r22, for example, has an odp of 0. Thinning ozone at the poles has started, and will continue to create increasing problems for the rest of the planet. Causes and effects of ozone layer depletion that are.
Pdf causes of ozone layer depletion and its effects on. The natural distribution of ozone around the earth is. The ozone layer helps to protect life from harmful ultraviolet radiation. Another most feared aspect of pollution is depletion of ozone layer of the stratosphere.
The depletion of atmospheric ozone also has detrimental effects on animals and the natural environment. The depletion of ozone layer has harmful effects on the environment. This can only be done by reducing the use of compounds which react in the atmosphere to harm the ozone layer. The evolution of ozone layer depletion, its impact on climate.
Health and environmental effects of ozone layer depletion. Ozone is a colourless gas which is found in the stratosphere of our upper atmosphere. The ozone layer is mainly found in the lower portion of the stratosphere. This decline is seen right throughout the ozone layer, but it is particularly noticeable above the polar regions in the springtime. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. Scribd is the worlds largest social reading and publishing site. 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. But many researchers do not agree with these predictions,14 and express their. Prepared by sanyam, vishal, harshit, nitish and suyash of class ixe to explain the effects of ozone layer. The humans will be directly exposed to the harmful ultraviolet radiations of the. Ozone depletion, gradual thinning of earths ozone layer caused by the release of chemical compounds containing gaseous chlorine or bromine from industry. With depletion in ozones layer, we humans are more prone to uv rays that reaches.
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. The layer of ozone gas is what which protects us from the harmful ultraviolet radiations of the sun. Abstractthere are many situations where human activities have significant effects on the environment. By knowing the statistics about ozone layer depletion, we can keep working hard at restoring our planet so that it is available for future generations to enjoy. It is an essential factor for many global, biological and environmental phenomena. There are many situations where human activities have. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. The envelope of air or different types of gases surrounding the earth is known as atmosphere. Ozone in the lower atmosphere fuels the damaging effects of climate change. This layer absorbs 9399% of the suns high frequency ultraviolet light, which is potentially damaging to life on earth 1. Ozone depletion and climate change environment canada. To the point where a seasonal hole in the ozone layer began to appear above the antarctic.
The causes, mechanism and bio effects of ozone layer depletion on humans were addressed. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. For human populations, the most dangerous effects of exposure to greater uvb radiation are. 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. The maps were produced with data collected by statellite istruments, including the ozone monitoring instrument on the aura satellite. 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. Effects and measures to protect ozone layer depletion. Measures should be taken to protect our earth from the harmful ultraviolet rays. Ozone depletion describes the observed loss of ozone in the stratosphere over the past 50 years. Ozone o3 is a stratospheric layer that plays important role in providing support to humans for their survival. A diminished ozone layer allows more uv radiation to reach the earths surface.
O atoms, which then combine with other oxygen molecules to form. Increased uv can also lead to reduced crop yield and disruptions in the marine food chain. The humans will be directly exposed to the harmful ultraviolet radiations of the sun due to the depletion of ozone layer. The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause of said depiction. In semiconductor physics, the depletion region, also called depletion layer, depletion zone, junction region, space charge region or space charge layer, is an insulating region within a conductive, doped semiconductor material where the mobile charge carriers have been diffused away, or have been forced away by an electric field. The earths ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30. 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. Thousands of new, highquality pictures added every day.
Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth. Man has tried hard to deploy protective measures towards. Within the stratosphere, the ozone layer is the portion that contains the highest. Frequently asked questions about the ozone layer us epa. Causes, effects and solutions of ozone layer depletion. It is also one of the prime reasons which are leading to global warming. Index terms bio effects, chlorofluorocarbon, ozone layer depletion, protection. It has a flash animated clipping showing formation of ozone. It encompasses both a steady thinning of the ozone layer at midlatitudes and its catastrophic. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. 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. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Case study on ozone layer ozone depletion chlorofluorocarbon. May 16, 2016 the ozone layer is depleted in two ways.
Since exposure to sunlight causes damage to human tissue, less ozone layer leads to a higher incidence of skin and eye conditions, including skin cancer and eye lesions such as cataracts. The ozone hole is shown in purple above the antarctic on sept. Nov 07, 2014 prepared by sanyam, vishal, harshit, nitish and suyash of class ixe to explain the effects of ozone layer. Ozone layer depletion cause, effects, and solutions.
Let us see the major effects of ozone layer depletion on man and environment. Ozone layer is a thin blanketlike layer that spreads over the atmosphere of the earth. Unprecedented arctic ozonethinning drifts south in wired magazine online discusses the thinning of the ozone layer at the poles, why it happens, and the projected effects. We have seen the various effects of ozone layer depletion and can conclude by saying that it is very important for our survival. 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.
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