The maps were produced with data collected by statellite istruments, including the ozone monitoring instrument on the aura satellite. Ozone layer absorbs the most of the harmful to wildlife high frequency ultraviolet light. Causes of ozone layer depletion and its effects on human. Ozone layer is recovering latest burning issues free. Ozone layer depletion definition, causes, solutions toppr. It shields the entire earth frommuch of the harmful uv radiationthat comes from the sun 3. In the 1970s, people all over the world started realizing that the ozone layer was getting thinner and that this was a bad thing. Commons category link is defined as the pagename articles with curlie links wikipedia articles with. The troposphere extends from the surface up to about 10 km in altitude, although this height varies with latitude. Unlike oxygen o2, ozone has a strong scent and is blue in color. This layer absorbs the radiations and prohibits them from entering the outer surface of the earth. List of books and articles about ozone layer online.
The level from which it extends outward varies with latitude. The concentration of ozone in the ozone layer is usually under 10 parts ozone. Ppt ozone layer depletion powerpoint presentation free. In addition, all figures are available for download, in three formats. Ozone is an irritating, corrosive, colorless gas with a smell something like burning electrical wiring. Based on atmospheric observations or industry data.
The ozone layer or ozone shield is a region of earths stratosphere that absorbs most of the suns ultraviolet radiation. The ozone depletion resulted in secondary production of an ozone layer near. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. This site is like a library, use search box in the widget to get. In the stratosphere, small amounts of ozone are constantly being made by the action of sunlight on oxygen. The possibility of artificial ozone layer creation in the stratosphere by powerful microwaves is discussed theoretically. The concentration of ozone in the ozone layer is usually under 10 parts ozone per million 5. Click download or read online button to get ozone depletion greenhouse gases and climate change book now. Basic ozone layer science ozone layer protection us epa. But ozone layer thickness varies with altitude and. Hence, cfcs are transporting agents that are responsible for damaging the ozone layer. Feb 12, 2018 far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. The ozone layer is found in the lower portion of the earths atmosphere. The ozone layer absorbs most of uv light from sun in stratosphere.
Ozone layer is an international treaty designed to protect the ozone layerby phasing out the production of numerous substances that are responsible forozone depletion. It covers the entire planet and protects life on earth by absorbing harmful ultravioletb uvb radiation from the sun. This layer absorbs between 93 and 99 per cent of the ultraviolet radiation from the sun. The ozone layer is a belt of naturally occurring ozone gas that sits 9. Ozone layer simple english wikipedia, the free encyclopedia. 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. Handbook for the montreal protocol on substances that deplete. All of the assessment documents core assessment report, executive summary, and twenty questions and answers about the ozone layer. The ozone layer helps in absorbing the ultraviolet uv rays of the sun which are harmful to human beings. The ozone layer is monitored regularly and there are now signs that the ozone layer has stabilised. Ozone layer depletion cause, effects, and solutions biology. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Ozone layer damage is more like a really thin patch than a hole.
The ozone layer definition of the ozone layer by the free. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to about 50 km about 30 miles above earths surface. The lowest layer, the troposphere tropospherethe region of the atmosphere closest to the earth. 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. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. Ozone depletion greenhouse gases and climate change. It is found that the ozone layer gets affected by some natural causes that are sunspots and stratospheric winds. Why the hole in the atmospheric ozone layer above us. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. In second cause, tv and fm radio waves is involve which effect on f and e layer of ionosphere and then ozone deplete. A region of the atmosphere lying mostly in the stratosphere, between about 15 and 30 kilometers 10 and 20 miles in altitude, containing a relatively high concentration of ozone that absorbs solar ultraviolet radiation in a wavelength range not screened by other atmospheric components. Ozone o3 is a molecule made up of three atoms of oxygen o, and is mostly. Photolysis of atmospheric ozone in the ultraviolet region pdf. The ozone hole is shown in purple above the antarctic on sept.
Download our english dictionary apps available for both. Ozone is a naturally occurring gas that is found in two layers of the atmosphere. Ozone layer introduction the ozone layer refers to the ozone within stratosphere, where over 90% of the earths ozone resides. The ozone layer is a layer in earths atmosphere which contains relatively high concentrations of ozone o3. Ozone layer layer in earths atmosphere located approximately 1050 km above earth where continuing process of ozone oxygen cycle takes place. The feature of very low ozone concentrations over a very welldefined region. Many organizations perform research on the ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone. Depletion of this layer by ozone depleting substances ods will lead to higher uvb levels, which.
Ozone hole definition of ozone hole by merriamwebster. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to. Stratospheric ozone depletion, ultraviolet radiation and health. This layer blocks absorbs ultraviolet part of the solar radiation which causes skin cancer from reaching the earths surface. Find, read and cite all the research you need on researchgate. This layer absorbs 9799% of the suns high frequency ultraviolet light, which is potentially damaging to life on earth. Ozone holes are popular names for areas of damage to the ozone layer. Definition of ozone layer from the collins english dictionary. Ozone layer definition is an atmospheric layer at heights of about 20 to 30 miles 32 to 48 kilometers that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere. Ozone hole definition is an area of the ozone layer as near the south pole that is seasonally depleted of ozone. The ozone layer forms a thin shield in the upper atmosphere protecting life on earth from uv rays.
Project report on ozone depletion environmental pollution. This comprehensive handbook outlines all amendments and decisions. Information and translations of ozone layer in the most comprehensive dictionary definitions resource on the web. Ozone depleting substances thin this layer resulting in large areas. For example, paper soaked in a mixture of starch and potassium iodide will change color when exposed to ozone. The earths atmosphere is composed of several layers. Handbook for the montreal protocol on substances that. The ozone layer prevents most ultraviolet uv and other highenergy radiation from penetrating to the earths surface but does.
One chlorine molecule from a cfc can destroy up to 100,000 ozone molecules. In the layer surrounding the earths surface, the troposphere, ground level or bad ozone is an air pollutant that is a. The ozone layer protects living things from the harmful radiation of the sun. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Protection of the ozone layer, it is the most universally ratified multilateral environmental agreement. Ozone layer definition of ozone layer by medical dictionary. The ozone layer or ozone shield is a region of earths stratosphere that absorbs most of the. Access information on research and technical resources related to ozone layer science. Ozone is harmful at ground level but high up the atmosphere ozone layer plays a vital role in the protection of all living beings. 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. Substances that deplete the ozone layer manmade substances which catalyze the decomposition of ozone. Belt of ozone gas 15 to 50 kilometers above the earths surface where ozone is present in concentrations of a few parts per million. The earths ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone. Downloads scientific assessment of ozone depletion 2018.
Ibrahim bin ahmed al ajmi, director general of climate affairs, said, the researchers and scientists noticed during the mid 70s a level of erosion and depletion in the ozone layer over the south pole due to human and industrial activities, with the main cause to be the use of halon and chlorofluorocarbons cfc. Uv rays can cause sunburn and damage the dna, the ozone layer. Stratospheric ozone depletion, ultraviolet radiation and. The ozone layer exists mainly in the stratosphere, a layer of the atmosphere that reaches from 10 to 50 kilometers about 6 to 30 miles above the earths. Ozone layer definition of ozone layer by merriamwebster. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the stratosphere. In above, we will discuss first cause of ozone depletion the second cause of ozone depletion is below. 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. The thinning is most pronounced in the polar regions, especially over antarctica. It was agreed on 16 september 1987, and entered into force on 1 january 1989. What is the ozone layer and how does it affect you. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the. A region of the atmosphere lying mostly in the stratosphere, between about 15 and 30 kilometers in altitude, containing a relatively high concentration. The market for ozone is big for example in the usa and it is growing all over the.
By the usual definition, stratospheric ozone depletion is not an integral part of the process of global climate change. The sun propagates ultraviolet radiations which as an adverse effect on living beings. Ozone layer depletion cause, effects, and solutions. A layer of ozone envelops the earth and keeps damaging ultraviolet, or uv, radiation from reaching living things on the planets surface. The ozone layer is the part of the earths atmosphere that has the most ozone in it.
Ozone layer article about ozone layer by the free dictionary. Ozone depletion consists of two related events observed since the late 1970s. Without the suns warmth, it would be too cold to live on earth, but the sun also gives off harmful ultraviolet rays, or uv rays for short. As a result the total amount of ozone remains constant. A free powerpoint ppt presentation displayed as a flash slide show on id. Unfortunately, this gives them plenty of time to find their way to the ozone layer. However, these cause a very nominal contribution to the ozone layer depletion which is near about 1 to 2 percent and therefore these. The ozone layer is mainly found in the lower portion of the stratosphere. Ozone layer is a thin, fragileshield that contains relatively highconcentrations of ozone. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Sometimes this means creating an image that looks much like an aerial photo of the. Pdf causes of ozone layer depletion and its effects on.
Ozone layer definition and meaning collins english. Odp measures the relative impact on ozone depletion per tonne of gas. Ozone layer definition, the layer of the upper atmosphere where most atmospheric ozone is concentrated, from about 8 to 30 miles 12 to 48 km above the earth, with the maximum ozone concentration occurring at an altitude of about 12 miles 19 km. In a warmer world, patterns of personal exposure to solar radiation e. 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. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Ozone layer definition and meaning collins english dictionary. The stratospheric ozone layer is a normal part in the earths atmosphere that absorbs highfrequency ultraviolet uv rays and protects us from their damaging effects. Pdf ozone in the stratosphere is constantly being produced and destroyed by different types of uv radiations coming from. How ozone is formed uv or lightning splits an oxygen o2 these join other o2 to form o3. The exact amount of ozone varies, depending on the seasons and the location. The first report of depletion in o 3 layer came out in the 1980s by an atmospheric scientist in antarctica.
The ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. The ozone layer is a layer of ozone high up in the earths atmosphere stratosphere, between approximately 10 kilometres and 50 kilometres above earths surface. An odp of 10, for example, is ten times as effective in depleting ozone per tonne, than an. Ppt ozone layer depletion authorstream presentation. Ozone layer definition of ozone layer by the free dictionary. The ozone layer synonyms, the ozone layer pronunciation, the ozone layer translation, english dictionary definition of the ozone layer. Ozone layer research and technical resources us epa. Ozone depletion law and legal definition uslegal, inc. The montreal protocol on substances that deplete the ozone layer is the most successful global environmental agreement in history. Third, depletion of stratospheric ozone and global warming due to the buildup of greenhouse gases interact to alter uvr related effects on health. Ozone in the ozone layer is formed by the action of solar ultraviolet light on oxygen. Ozone in the stratospherea layer of the atmosphere between 15 and 50. The best analogy i know of for ozone in the atmosphere is that it is very much like the foam on the ocean surf as it crashes on the beach. The ozone hole is defined geographically as the area where in the total.
The ozone layer protects living things from the harmful radiation of the. Learn what cfcs are, how they have contributed to the ozone hole, and how the 1989 montreal. That is, its made from a combination of sea water and air oxygen, but yet is a distinct substance that yo. This helps you give your presentation on depletion of ozone layer in a conference, a school lecture, a business proposal, in a webinar and business and professional. The ozone layer or ozone shield is a region of earth s stratosphere that absorbs most of the sun s ultraviolet radiation. Ozone layer definition 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.
This page provides links to research efforts led by organizations such as the national oceanic and atmospheric administration, the united nations environment program, an. The ozone layer is not really a layer at all, but has become known as such because most ozone particles are scattered between 19 and 30 kilometers 12 to 30 miles up in the earths atmosphere, in a region called the stratosphere. 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. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. Cfc molecules are highly stable and can last for up to 100 years. This, in turn, will lead to the breakdown of ozone. In contrast, groundlevel ozone is an air pollutant, which has harmful respiratory and cardiovascular effects. Timeline of stratospheric ozone depletion and observations. The word ozone means smelly in greek because the gas has a strong odor.
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