Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Learn more about the process, causes, and effects of ozone layer depletion. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation.
The montreal protocol on the protection of the global ozone layer is a somewhat. Since india already receives high doses of ultraviolet uvb radiation, and is at the threshold go to speak, effects of ozone layer depletion. It is thought by many to be caused by our use of fossil fuels such as oil, gas and coal. Ozone depletion reasons, impacts, prevention by reshma. The ozone hole and global warming union of concerned scientists. Ozone depletion and climate change, or ozone hole and global warming in more popular terms, are environmental challenges whose connections have been explored and which have been compared and contrasted, for example in terms of global regulation, in various studies and books. This paper presents natural refrigerants as the ideal, environmentally friendly refrigerants and the ultimate solution to the problems of ozone depletion and global warming.
Evs global warming, ozone depletion ppt free download as powerpoint presentation. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Jul 23, 2018 when sufficient amounts of ozone have been destroyed, the low concentration area is often called a hole in the ozone layer, with increased uv radiation making it to the surface below. Can ozone depletion and global warming interact to produce rapid climate change. Protecting the ozone layer and reducing global warming undp.
The ozonedepletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. Scientists 100 years ago would have been incredulous at the. The ozone hole is an area in the stratosphere above antarctica where chlorine and bromine gases from humanproduced chlorofluorocarbons cfcs. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Global warming and the depletion of the ozone o3 layer the average surface temperature on earth has increased approximately 1. This paper compares potential ozone depletion and global warming for halon 1 and. Causes of ozone layer depletion and its effects on human. Chapte r ozone depletion potentials, global warming. Can ozone depletion and global warming interact to produce. 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. The ozone hole and global warming union of concerned. Global warming potentials global warming potentials provide a simple rep resentation of the relative radiative forcing resulting from a unit mass emission of a greenhouse gas compared to a reference compound. Human activities cause ozone depletion and global warming.
Global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity. Ozone depletion and global warming an integrated approach. 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. Ozone layer depletion causes, effects and solutions 7. Ozone depletion facts and information national geographic. In many cases there are several available halon replacements. The ozone hole is an area in the stratosphere above antarctica where chlorine and bromine gases from humanproduced chlorofluorocarbons cfcs and halons have destroyed ozone molecules. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. Who climate change and human health risks and responses. Scientific indices representing the relative effects of different gases upon ozone depletion and climate forcing are presented. Strictly, stratospheric ozone depletion is not part of global climate change, which occurs in the troposphere. What is the relationship between the greenhouse effect, ozone. Changes in ozone and climate are directly linked because ozone absorbs solar radiation and is also a greenhouse gas. Global warming surfacelevel ozone and other compounds.
The thinning is most pronounced in the polar regions, especially over antarctica. Pdf there are many situations where human activities have significant effects on the environment. Ozone depletion potentials and global warming potentials the effectiveness of bromine compared with chlorine on a peratom basis for global ozone depletion, typically referred to as. Oh reaction rate constant, ir absorption spectrum, ozone. Btp atmospheric lifetime, ozone depletion potential odp, and global warming potential gwp were evaluated in the whole atmosphere community climate model for land emissions from 30 to 60n and from 60s to 60n. The compound with the lowest gwp will often have a small ozone depletion potential odp while a zero odp alternative will often have a much higher gwp. Ozone in the lower atmosphere contributes to global warming and climate change. The term ozone hole refers to the depletion of the protective ozone layer in the upper atmosphere stratosphere over earths polar regions. Some halocarbons ozone depleting substances, or odss deplete the ozone layer, while others greenhouse gases, or ghgs are thought to contribute to global warming. It absorbs solar ultraviolet radiation, which heats the stratosphere. Ozone layer depletion is not something that affects any.
Climate change, global warming, and ozone loss iitk. Hfc refrigerants are currently the leading replacement for cfc and hcfc refrigerants in refrigeration and airconditioning systems. Is depletion of the ozone layer the principal cause of climate change. Tthe ozone hole and global he ozone hole and global global. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. Pdf ozone depletiona warning of global warming researchgate. So if we make awareness among people we can sav e ozone layer from depletion, ecosystem imbalance, and o ther. Tthe ozone hole and global he ozone hole and global wwarming 1arming 1 the ozone hole and global warming global warming global warming is an increase in the average temperature of the earths atmosphere, leading to climate change. These interactions may be responsible for the pronounced changes in tropospheric and stratospheric climate observed during the past few decades. Reducing the use of ozone depletion substances ods.
Effects on eyes the major cause of blindness in this world is. Ozonedepleting substances and high global warming potential hydrofluorocarbons jun 2016 a definitions. Ozone depletion potentials odps and global warming potentials gwps are evaluated with improved models and input data, and their sensitivities to uncertainties are considered in greater detail than in previous assessments. Causes and effects of ozone layer depletion that are. Instead of looking back at the successful cfc phaseout, the u. However, various factors have led to the depletion and damage of this protective layer. 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. The dynamics and thermodynamics of these modes are such that strong synergistic interactions between stratospheric ozone depletion and greenhouse warming are possible.
It will magnify the effects of ultraviolet rays on human health. As used in this clause global warming potential means how much a given mass of a chemical contributes to global warming over a given time period compared to the same mass of carbon dioxide. Ozone o 3 depletion does not cause global warming, but both of these environmental problems have a common cause. Evs global warming, ozone depletion ppt ozone depletion. Are those holes in the ozone layer the main factor responsible for global warming. In this paper we will attempt to examine the relationship between global warming and ozone layer depletion, subsequently try to look at the possible solutions.
The treaty is structured around several groups of halogenated hydrocarbons that deplete stratospheric ozone. Because of its central role in concerns about climate change, carbon dioxide has gen. 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 depletion and global warming are two major environmental concerns with serious implications for the future development of the refrigerationbased industries. This table provides up to date internationally recognised data on the ozone depletion potential and global warming potential of the gases, as well as an easy reference summary of their impact. Ozone depletion may also make it harder to combat global warming, because more uv light penetrates the worlds oceans and destroys plankton. The next most significant greenhouse gas is surface, or lowlevel, ozone o3. The use of cfcs not only destroys the ozone layer but also leads to global warming. Chapter ozone depletion potentials, global warming. Jul 16, 2008 human activities cause ozone depletion and global warming.
It was originally thought that an ozone hole only existed above. The 1989 montreal protocol successfully phased out cfc production and use. The the causes and effects of global ozone depletion have been illuminated in this paper. Why global mean surface temperatures began to rise around 1970 after having been relatively constant since 1945. Ozone depletion and global warming overview page 1 of 5 halocarbons are chemical compounds containing carbon, one or more halogens, and sometimes hydrogen. Oct 12, 2005 global warming is predicted to cause rising ocean levels, lower plant productivity, and more frequent and dangerous weather patterns. The depletion of the ozone layer 1593 words 7 pages. The nations of the world have already taken collective action to solve one global atmospheric problem. Measured infrared absorption data are also combined with the lifetime to show that the 20. Ozone depletion and climate change have usually been thought of as environmental issues with little in common other than their global scope. I have written many papers explaining what is wrong with greenhousewarming theory and how ozone depletion theory explains global warming since 1970 and throughout all of earth history far more accurately and in far greater detail than greenhousewarming theory. I have written many papers explaining what is wrong with greenhouse warming theory and how ozone depletion theory explains global warming since 1970 and throughout all of earth history far more accurately and in far greater detail than greenhouse warming theory. The ozone depletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory.
Ozone is a variant of oxygen, the ozone molecule having three atoms of oxygen. Ozone depletion and climate change are linked in a number of ways, but ozone depletion is not a major cause of climate change. 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. The ozone hole and global warming are not the same thing, and neither is the main cause of the other. The climate system involves the atmosphere specifically processes within the troposphere, such as air circulation patterns land surfaces and oceans. When sufficient amounts of ozone have been destroyed, the low concentration area is often called a hole in the ozone layer, with increased uv radiation making it to the surface below. The treaty is structured around several groups of halogenated hydrocarbonsthat deplete stratospheric ozone.
All of the ozone depleting substances controlled by. Global warming is predicted to cause rising ocean levels, lower plant productivity, and more frequent and dangerous weather patterns. Possible effects of global warming climate and weather adapting to climate change greenhouse effect human impacts on the ozone layer. Publications about the ozone depletion theory of global warming. Atmospheric ozone has two effects on the temperature balance of the earth.
The effects on the industry of the actions to reduce ozone depletion and global warming are now apparent. Ozone layer depletion fueled by falling temperature in the stratosphere can be termed as yet another hazardous effect of global warming on the earth. Holton department of atmospheric sciences, university of washington, seattle, wa 981951640. The ozone layer helps to protect life from harmful ultraviolet radiation. Global initiatives on climate change montreal protocol kyoto protocol. Ozone depletion and global warming and their health effects are discussed in some detail in. Essay on global warming and the depletion of the ozone o3 layer. Global warming global warming surfacelevel ozone and other compounds. The global, annual average atmospheric lifetime of btp in the former scenario was 7. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere.
Ozone depletion is usually worse further from the equator. Project report on ozone depletion environmental pollution. There are, however, several recently described interactions between ozone depletion and greenhouse gasinduced warming. Ozone depletion and global warming potentials of cf3i.
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