Cfcs and halons break down into chlorine and bromine which in turn destroy the ozone layer. The depletion of ozone layer has trickle down effects in the form of global warming, which in turn leads to melting of polar ice, which will lead to rising sea levels and climatic changes around the world. Ozone layer is a deep layer in earths atmosphere called stratosphere that contain ozone which is a naturally. Pdf on jan 1, 2001, md safiuddin and others published global ozone depletion. Ozone in the lower atmosphere contributes to global warming and climate change. How ozone layer is depleting factors contributing its destruction. They will do surveys, awareness campaigns making pamphlets and distributing, collection of data and its analysis. Pdf causes of ozone layer depletion and its effects on. It allows only the required doses of the suns solar energy to reach the earths surface. Global warming and the depletion of the ozone o3 layer the average surface temperature on earth has increased approximately 1. The thinning is most pronounced in the polar regions, especially over antarctica. What is an ozone hole and causes and effects of ozone. International journal of environmental science and development, vol.
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 is revealed that introduction of chlorof lourocarbons cfcs in the environment is the most rated cause of said depiction. Ozone depletion free download as powerpoint presentation. Ozone depletion ozone depletion chlorofluorocarbon free. Students will research on the ozone hole depletion causes and effects. Researchers indicate that many of the effects of ozone depletion on human health tend to apply for animals, too. Rivm report 481505011 technical report on stratospheric ozone. There have been several concerns about ozone depletion. The causes, mechanism and bio effects of ozone layer depletion on humans were addressed. Ozone layer and causes, effects and solutions to ozone depletion.
The main effect of ozone depletion is an increase in uvb rays reaching the earths surface causes. Pdf causes of ozone layer depletion and its effects on human. Ozone layer is a thin blanketlike layer that spreads over the atmosphere of the earth. Ozone layer depletion, its causes, effects and control measures.
Ozone is a form of oxygen that is present in the earths atmosphere in small quantity. Ozone depletion facts and information national geographic. 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. Ozone o3 is a stratospheric layer that plays important role in providing support to humans for their survival. Ozone layer depletion pdf file the origin, causes, mechanisms and bio effects of ozone layer depletion as. Oct 27, 2017 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. 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. 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. 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. Let us have a detailed look at the various causes and effects of ozone layer depletion.
These radiations can cause severe diseases in humans such as skin cancer, eye damage and genetic mutations etc 9. Man has tried hard to deploy protective measures towards controlling the ozone layer from depletion,but this is so. This website addresses stratospheric ozone issues, including the science of ozone depletion, epas regulatory approach to protecting the ozone layer, epa. Ozone layer depletion causes, effects and solutions 7.
Ozone layer depletion can have some serious consequences on effects of human health, plants, marine ecosystems, biogeochemical cycles and earths environment. Causes of ozone depletion the fact that the ozone layer was being depleted was discovered in the mid1980s. Since 2000 rate of ozone depletion is increasing 0. The latter phenomenon is referred to as the ozone hole. Ozone gas is perceptibly blue in colour and has a characteristic pungent smell. About depletion of the ozone layer is the anticipated increase in the amounts of. Scribd is the worlds largest social reading and publishing site. What are the causes and effects of ozone depletion. Although natural phenomenon can cause ozone depletion but human activities such as cfcs are now accepted as major cause of depletion 9. It contains some videos and gif at thte end from an external source. Causes of ozone depletion there are two different types of ozone depletion, both are very similar. This study was conducted at university of gujrat during 20142015 as a term paper for master of philosophy. What is an ozone hole and causes and effects of ozone depletion. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause of said depiction.
Ozone layer essay ozone depletion causes and effects. Ozone layer the ozone layer or ozone shield refers to a region of earths stratosphere that absorbs most of the suns ultraviolet uv radiation. We refer to these reports for detailed information. Environmental effect of ozone depletion 1998 assessment unep, 1998. The ozone layer is mainly found in the lower portion of the stratosphere. Ozone depletion consists of two related events observed since the late 1970s. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. Ozone depletion biology science fair project ideas.
Ozone layer depletion, its causes and its effects free download as powerpoint presentation. 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 ozone layer protects us from excessive levels of harmful ultraviolet uv radiation. Dec 06, 2015 ozone layer the ozone layer or ozone shield refers to a region of earths stratosphere that absorbs most of the suns ultraviolet uv radiation. This paper analyses the causes and effects of ozone depletion. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. There are also springtime polar tropospheric ozone depletion. Causes of ozone depletion the fact that the ozone layer was being depleted was discovered in the mid1. The main effect of ozone depletion is an increase in uvb rays reaching the earths surface. The fact that uv b can cause biological effects is well demonstrated by the familiar sunburn that follows overexposure to the sun. These rays can cause skin cancer, cataract, damage to plants and crops and marine food.
These wavelengths cause skin cancer, sunburn and cataracts, which were projected to increase. The main effect of ozone depletion is an increase in uvb raysreaching the earths surface. Learn about ozone depletion, its causes, and effects. There had been a lot of research on this topic over these years to find out all the possible causes. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Ozone layer depletion increases the amount of uvb that reaches the earths surface. The problems and causes associated with ozone depletion arise from human activities.
It is used for sterilization of water, removal of unpleasant odors and has very positicos treatments results in different ailments from ozone therapy. Ozone protects life on earth by stopping uv ultraviolet rays of sun in the upper atmosphere, it does not allow them to reach at the ground level. Ozone is a molecule consisting of three oxygen atoms o3 and has the property of being highly toxic because of its radioactivity. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Causes, effects and solutions of ozone layer depletion. There had been a lot of research on this topic over these years to find out all the possible causes that lead to this problem and the effects of ozone depletion.
Cause and effects of ozone depletion research paper. Global warming and the depletion of the ozone o3 layer. Learn more about the process, causes, and effects of ozone layer depletion. Causes and effects of ozone layer depletion that are. This timeline highlights the average area of the ozone hole between september 7th and october th as observed by nasa spacedbased instruments see colored bars and scale. Health and environmental effects of ozone layer depletion. Causes of ozone depletion ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is tipped in favour of destruction. Its presence in the lower atmosphere closer to earth contributes to air pollution and causes damage to human tissues. Laboratory and epidemiological studies demonstrate that uvb causes nonmelanoma skin cancer and plays a major role in malignant melanoma development. Ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is disturbed.
The first one has been a slow, but steady ozone depletion of 4% per decade of the earths. Ozone depletion and the ozone hole have generated worldwide concern over increased cancer risks and other negative effects. Causes of ozone layer depletion and its effects on human. Due to depletion of ozone uv rays are penetrating in troposphere and leading to more ozone formation in troposphere which is causing injurious effects on our health as ozone is toxic for our body 8. Ozone layer depletion cause, effects, and solutions. Jan 20, 2010 causes of ozone depletion there are two different types of ozone depletion, both are very similar. 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. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. Our powerpoint presentation about ozone depletion, its effects and its causes.
The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Ozone layer depletion, its causes and its effects ozone. It is an essential factor for many global, biological and environmental phenomena. One of the main reasons for the widespread concern about. The latest ozone layer depletion news is included at the foot of the page. Project report on ozone depletion environmental pollution. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in.
Download file to see previous pages the effect of ozone depletion is more than what one would anticipate. With depletion in ozones layer, we humans are more prone to uv rays that reaches the earths surface. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. The stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on earth from. Dec 14, 2015 what are the effects of ozone depletion. 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. The ozone layer acts as a natural filter, absorbing most of the suns burning ultraviolet uv rays. Protecting the ozone layer department of the environment. May 03, 2017 ozone layer is a thin blanketlike layer that spreads over the atmosphere of the earth. Ozone layer depletion causes and effects of ozone layer. The proteins cells in plants undergo harmful mutations, all due to ultraviolet radiations. Ozone depletion from the 1970s the depletion of the ozone layer started to capture the attention of the scientists, environmentalists, and the world community at large. But through domestic and international action, the ozone layer is healing and should fully recover by about 2065.
Ozone depletion ozone depletion chlorofluorocarbon. Ozone depletion is allowing the uv radiation to earth surface. It contains high concentrations of ozone o3 relative to other parts of the atmosphere, although still. The ozone layer protects the surface of the earth and its phenomena from stray rays from the sun. Let us see some of the important causes and effects of ozone layer depletion. However, various factors have led to the depletion and damage of this protective layer.
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. The main things that lead to destruction of the ozone gas in the ozone layer. Mar 28, 2020 ozone depletion and uv radiations ozone depletion results in an increase of uvb radiation, but the shorter the wavelength, the stronger the increase within the uvb range. Aug 18, 2017 the ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. Progress report 2003 united nations environment programme, environmental e.