On this day of september 16, marked as the ozone layer day, let use try to know some of the basics of ozone layer like what is ozone layer, importance of ozone layer, how ozone layer gets depleted, effects of depletion of ozone layer, how to prevent depletion of ozone layer. In response to the prospect of increasing ozone depletion. Unfortunately, this sloppy language trivializes the problem. Importance of the ozone layer whenever you hear terms like uv rays or greenhouse gases the next thing that comes in your mind is the ozone layer. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. Ozone layer depletion and its effects 1575 words 7 pages. 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.
Ozone depletion potential an overview sciencedirect topics. Mar 07, 2017 depletion of ozone layer decrease in concentration of ozone and thinning of ozone layer is called ozone depletion. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to. This is to let people know the importance of ozone layer in the atmosphere. The ozone layer protects earth from dangerous uv radiation fig. Ozone layer importance, depletion, effects and protection. This, in turn, will lead to the breakdown of ozone. The increase in the levels of uv rays lead to high rate of skin cancer and eye related problems. It acts as a protective shield for the man, animals and. Essay and speech on the importance of ozone layer for life and how to protect it. The experts have blamed the ozonelayer depletion on manmade chemicals containing chlorine and bromine that are emitted from a number of products and industrial processes.
The latter phenomenon is referred to as the ozone hole. 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. Chlorofluorocarbon cfc banks from uses such as air conditioners or foams can be emitted after global production stops. Causes, effects and solutions of ozone layer depletion. When we are exposed to ultraviolet light, it enhances the risks of cataract development and skin cancer. The vienna convention for the protection of the ozone layer is an international environment agreement that acts as a framework for the efforts to protect the ozone layer. Ozone depletion, odp ozone forms a layer in the stratosphere protecting plants and animals from much of the suns harmful uvradiation. Protecting the ozone layer department of the environment. And also how to protect the ozone layer, how is ozone layer depleted, effects of ozone layer depletion and we see some of the facts of the ozone layer. Limiting future n 2 o emissions would enhance the recovery of the ozone layer from its actual state and would also. This quizworksheet combo will help you test your understanding of the importance of the ozone. Humans have introduced gases and chemicals into the atmosphere that have rapidly depleted the ozone layer in the last century. In lower atmosphere, atmospheric oxygen get dissociated and subsequently combines with molecular oxygen of the.
Pdf causes of ozone layer depletion and its effects on. 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. The ozone layer protects the earth from the harmful uv radiations. The depletion of the ozone layer leads to an increased exposure to ultraviolet light, which can cause many health problems. Ozone depletion consists of two related events observed since the late 1970s. Ozone is harmful at ground level but high up the atmosphere ozone layer plays a vital role in the protection of all living beings. Essay about ozone layer depletion 1623 words bartleby. Approximately 90 percent of the atmospheres ozone occurs from 1018 km 611 miles to about 50 km about 30 miles above earths surface. 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.
In the 1980s, due to manufacturing processes and home use of cfcs, a hole in the ozone layer covering many millions of square miles above antarctica had formed. Importance of the ozone layer in the earths atmosphere. With this understanding, we know that ozone depletion is occur ring and why. 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. By contrast, annual anthropogenic n 2 o ozone depletion potentialweighted emissions were the fourth most important in the 1980s. In 1985, the scientists published an article in nature announcing that stratospheric ozone over antarctica was reduced 40% in september, the end of the austral winter. Ozone layer depletion causes, effects and solutions 7. The importance of ozone is defined by the fact that it protects the earth from harmful ultraviolet rays from the sun. At the same time this destroyed by various reactions with other components in the air.
The ozone layer or ozone shield is a region of earths stratosphere that absorbs most of the suns ultraviolet radiation. Concerns over depletion of the ozone layer arose in the 1970s, when scientists realized that chemicals released by various anthropogenic activities could lead to a slow decline in ozone amounts in the stratosphere. It is very much possible to treat skin cancer in their early stages. Ozone o3, also known as superoxide, is an allotrope of oxygen o2, which is a light blue gas with a special odor at normal temperature.
The ozone layer helps to protect life from harmful ultraviolet radiation. You may have heard that an enormous hole in the ozone layer had once formed in the atmosphere. Frequently asked questions about the ozone layer ozone. Ozone layer damage is more like a really thin patch than a hole. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. This depletion makes humans more vulnerable to the uvb rays which are known to cause skin cancer as well as other genetic deformities. The convention entered into force on september 22, 1988.
It protects us from harmful uv radiations emitted from. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. This pho tograph of an arctic polar stratospheric cloud psc was taken from the ground at kiruna, sweden 67n, on 27 january 2000. This proves ozone depletion is a big issue that needs attention. Ozone depletion facts and information national geographic. Ozone layer depletion ozone is a natural trace component of the atmosphere. European environment agency for the status of the currently ongoing ozone hole, you can visit the copernicus web site.
You will also study the research and policy that has been. The european union has played a leading role in international. Even with the ozone filter, some ultraviolet radiation reaches the earth. It is also a prime reason which is leading to global warming. Ozone layer depletion causes increased uv radiation levels at the earths surface, which is damaging to human health. We discuss why is the ozone layer important to living things. The upper layer of the atmosphere surrounded by ozone 15 to 30 kms is known as ozonosphere. 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. Why ozone layer is important ozone layer depletion and.
It was adopted and signed by 28 countries on march 22, 1985 at the conference of plenipotentiaries on the protection of the ozone layer. The ozone layer is found in the upper regions of the stratosphere where it protects the earth from the harmful ultraviolet rays of the sun. Ozone is good in the stratosphere because it absorbs all of the most energetic ultraviolet radiation uvc, most of the uvb radiation and some of the least energetic uv radiation uva. Causes of ozone layer depletion and its effects on human. Nature has given us everything for us to live and have a basic life. The sun propagates ultraviolet radiations which as an adverse effect on living beings.
Vienna convention for the protection of the ozone layer. Pdf atmospheric ozone layer depletion and its impact. And, most important, it has become clear that, if ozonedepleting gases were to. Why ozone layer is important ozone layer depletion.
Why is the ozone layer important for life on earth. Ozone concentration differs by about 10 ppm in stratosphere compared to 0. In fact whole world is vulnerable to its after affects. These radiations can cause skin cancer in the humans. The emission of ozonedepleting gases are threatening the earths ozone layer. Sep 20, 2016 importance of ozone layer ozone is concentrated in the lower stratosphere between 15 and 30 km above the earths surface the socalled ozone layer. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. The ozone layer is a layer with high ozone concentration in the stratosphere of the atmosphere. The importance of the ozone like an infection that grows more and more virulent, the continentsize hole in earths ozone layer keeps getting bigger and biggerbeyond discovery. Let us see some of the important causes and effects of ozone layer depletion. The parts of the uv light absorbed or reflected is very harsh on the.
The main things that lead to destruction of the ozone gas in the ozone layer. However, even t he small amount of ozone plays a key role in the atmosphere. Experts blame ozonelayer depletion on manmade chem icals containing. Lets have a look at some of the solutions to ozone layer depletion. Where is the ozone layer located and importance of ozone. When there was no ozone layer, life could only exist in the sea. The ozone layer absorbs harmful radiations from the sun, thereby reducing cancer and cataract risks, making life on earth safe from hazardous cosmic rays. Timeline of stratospheric ozone depletion and observations. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. The ozone levels have declined as a consequence of cfcs and halons released into the atmosphere. Ozone holes are popular names for areas of damage to the ozone layer. Ozone present in the stratosphere forms a protective layer and known as ozone layer, ozonosphere or ozone umbrella its concentration in atmosphere is about 10 ppm.
Pscs form in the ozone layer during winters in the arctic and antarctic stratospheres wherever. There has been made a pact named as montreal protocol. Hence, cfcs are transporting agents that are responsible for damaging the ozone layer. High amount of ozone depletion was observed in 1980s around the antarctic regions. Find answers to frequently asked questions about the ozone layer, ozone depletion, and the effects of ozone depletion on health and the environment. In this lesson, you will learn the importance of the ozone layer and how it is depleted. May 23, 2019 ozone is a paleblue gas that forms a layer in the stratosphere of our atmosphere called ozone layer. 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 in the stratospherea layer of the atmosphere between 15 and 50 kilometers 10 and 31 miles. The following points illustrate the importance of the ozone layer as an essential component of the earths atmosphere. Nearly 500 organizations, teams, and individuals from 40 countries have received stratospheric ozone protection awards for their exceptional leadership, personal dedication, and technical achievements.
Today, more than 190 countries are a part of this pact and have signed. Ozone can be produced by numerous chemical reactions, but the main mechanism in the atmosphere for its production and removal is absorption of ultraviolet uv radiant energy from the sun. Sep 30, 2019 ozone depletion is largely a result of manmade substances. Depletion to ozone layer depletion does not affect a region or a country. Now i am going to tell you what are the adverse effects caused by the depletion of the ozone layer ozone which accounts for only 3 parts in ten millions of earths atmosphere, plays several crucial roles in the radiation balance of the planet. This layer absorbs the radiations and prohibits them from entering the outer surface of the earth. The ozone depletion was very important in global environmental and climate change, therefore the aim of this research is to find the effect of atmospheric ozone depletion on the climate change and. It is mainly made up of ozone gases, and the key gas is o3 which is made of molecules consisting of three oxygen atoms all bonded together. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. The importance of this depletion arose from ozones role as an absorber of biologically damaging ultraviolet sunlight.
The antarctic ozone hole, as it came to be known, made depletion of. First it absorbs some of the higher energy uv rays from the sun in the same way a cloud absorbs and reflect some of the visible light. In the 1970s, people all over the world started realizing that the. This radiation is responsible for skin cancer and stunting of plant growth. 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. 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. Importance of ozone layer ozone is concentrated in the lower stratosphere between 15 and 30 km above the earths surface the socalled ozone layer. To understand the importance of the ozone layer, its crucial to first establish. Solution on ozone layer depletion september 16 was voted the world ozone day in the year 1994 by the united nations general assembly. This is why it is so important that we protect our precious ozone layer. The montreal protocol in 1987 has been successful in curbing many of the substances that are most destructive to the ozone layer. Ozone layer depletion cause, effects, and solutions. On this day of september 16, marked as the ozone layer day, let use try to know some of the basics of ozone layer like what is ozone layer, importance of ozone layer, how ozone layer gets depleted, effects of depletion of ozone layer, how to prevent depletion of ozone layer, montreal protocol, our role in preventing ozone layer etc. The chlorofluorocarbon and the halons are potent ozone depletors.
The first report of depletion in o 3 layer came out in the 1980s by an atmospheric scientist in antarctica. The ozone is a protective layer that occurs naturally in the stratosphere, 6 to 28 miles in altitude. It is found largely in the stratosphere that extends from about 6 km at the poles and 17 km at the equator to about 50 km above the earths surface. Ozone layer depletion cause, effects, and solutions biology. Hence, we should be aware and actions must be taken to ensure that ozone layer is not destroyed. Ozone layer plays a very vital role in the atmosphere. Ozone layer protection european commission european union. Most important, we know that if the most potent odss were to continue to be emitted and increase in the atmo sphere, the result would be more depletion of the ozone layer. There are two more important hazards which are posing challenges to future existence of our civilization are green house effect and ozone depletion. Importance of the ozone layer, effects of ultraviolet light on humans, location of ozone in atmosphere, graphing ozone concentra. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in earths. The most concentrated part is located at an altitude of 2025 kilometers.
Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. In humans, a depleted ozone layer would likely mean high. The thinning is most pronounced in the polar regions, especially over antarctica. The depletion of the ozone layer 1593 words 7 pages. The ozone is a layer of gases in the stratosphere, which is a thick 20 km thick, to be precise layer of gas that rests about 3050 km above the surface of the earth. This worksheet has earth science regents questions about the ozone layer and ozone depletion. Ozone, a gaseous molecule of three oxygens, surrounds the earth in what is known as the ozone layer. This report covers the important and substantial achievements of the people, programs. Ozone layer is a protective stratospheric layer, also known as ozone umbrella. 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. Quantifying contributions of chlorofluorocarbon banks to.
It is created continuously through the action of sunlight and oxygen in the upper atmosphere. 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. Ozone layer importance, depletion, effects and protection of. It not only absorbs uv radiations but also the radiations of wavelength less than 3.
Pdf there are many situations where human activities have significant effects on the environment. Ozone layer depletion is 8th most serious environmental problem from top 10 environmental problems faced by earth. This is a phenomenon characterized by warming of the earths atmosphere resulting from absorption of infrared radiation from atmospheric constituents. Ozone layer importance, depletion, effects and protection of ozone layer may 23, 2019 author chemistry, geology and astronomy 0 ozone is a paleblue gas that forms a layer in the stratosphere of our atmosphere called ozone layer. If the ozone of the ozone layer is calibrated to the standard case, its thickness is only about 3 mm on average.
Ozone layer depletion is the thinning of the ozone layer present in the atmosphere. Odss were to continue to be emitted and increase in the atmo sphere, the result would be more depletion of the. This layer absorbs about 99% harmful solar radiations like uv rays, x rays, gamma rays etc. In the upper atmosphere, atmospheric gases absorbs the suns radiation, get ionized, and release molecules. The latest satellite measurement indicates an ozone loss at the rate of 8% just above the south pole, at the centre of the ozone hole, 5% of the protective gas is depleting each day.
In the 1980s, inquiry into the cause of the depletion of the ozone layer led to investigation of chlorofluorocarbons, which are chemicals used in refrigerants, insulating foams and solvents. A depletion of the ozone layer will increase the uvradiation at ground level. Effects of ozone depletion for humans and the environment. 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.
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