The depletion of the ozone layer 1593 words 7 pages. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Oct 12, 2005 global warming is predicted to cause rising ocean levels, lower plant productivity, and more frequent and dangerous weather patterns. Evs global warming, ozone depletion ppt ozone depletion. Ozone depletion reasons, impacts, prevention by reshma. Who climate change and human health risks and responses. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. 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. Pdf ozone depletiona warning of global warming researchgate.
The treaty is structured around several groups of halogenated hydrocarbonsthat deplete stratospheric ozone. Scientists 100 years ago would have been incredulous at the. Evs global warming, ozone depletion ppt free download as powerpoint presentation. Global warming surfacelevel ozone and other compounds. 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. Can ozone depletion and global warming interact to produce rapid climate change. Can ozone depletion and global warming interact to produce.
Publications about the ozone depletion theory of global warming. Hfc refrigerants are currently the leading replacement for cfc and hcfc refrigerants in refrigeration and airconditioning systems. The ozonedepletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. 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. Global warming global warming surfacelevel ozone and other compounds. 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. Chapter ozone depletion potentials, global warming. The 1989 montreal protocol successfully phased out cfc production and use. The dynamics and thermodynamics of these modes are such that strong synergistic interactions between stratospheric ozone depletion and greenhouse warming are possible. 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. 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. Since india already receives high doses of ultraviolet uvb radiation, and is at the threshold go to speak, effects of ozone layer depletion.
Global warming and the depletion of the ozone o3 layer the average surface temperature on earth has increased approximately 1. Ozone in the lower atmosphere contributes to global warming and climate change. Reducing the use of ozone depletion substances ods. Ozone depletion and global warming are two major environmental concerns with serious implications for the future development of the refrigerationbased industries. 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. Ozone layer depletion causes, effects and solutions 7. Ozone o 3 depletion does not cause global warming, but both of these environmental problems have a common cause. Ozone depletion facts and information national geographic. Instead of looking back at the successful cfc phaseout, the u. This paper compares potential ozone depletion and global warming for halon 1 and. These interactions may be responsible for the pronounced changes in tropospheric and stratospheric climate observed during the past few decades. Ozone depletion and climate change have usually been thought of as environmental issues with little in common other than their global scope.
The ozone hole and global warming union of concerned scientists. The climate system involves the atmosphere specifically processes within the troposphere, such as air circulation patterns land surfaces and oceans. The ozone hole and global warming are not the same thing, and neither is the main cause of the other. Global initiatives on climate change montreal protocol kyoto protocol. Protecting the ozone layer and reducing global warming undp.
Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. 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. Jul 16, 2008 human activities cause ozone depletion and global warming. So if we make awareness among people we can sav e ozone layer from depletion, ecosystem imbalance, and o ther. Ozone layer depletion is not something that affects any. Ozone depletion and global warming overview page 1 of 5 halocarbons are chemical compounds containing carbon, one or more halogens, and sometimes hydrogen. Holton department of atmospheric sciences, university of washington, seattle, wa 981951640. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. Because of its central role in concerns about climate change, carbon dioxide has gen. The ozone hole is an area in the stratosphere above antarctica where chlorine and bromine gases from humanproduced chlorofluorocarbons cfcs. It is thought by many to be caused by our use of fossil fuels such as oil, gas and coal.
Chapte r ozone depletion potentials, global warming. Causes and effects of ozone layer depletion that are. Project report on ozone depletion environmental pollution. Scientific indices representing the relative effects of different gases upon ozone depletion and climate forcing are presented. The ozone hole and global warming union of concerned. 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. There are, however, several recently described interactions between ozone depletion and greenhouse gasinduced warming.
Ozonedepleting substances and high global warming potential hydrofluorocarbons jun 2016 a definitions. Tthe ozone hole and global he ozone hole and global global. The ozone depletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. 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. 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. The nations of the world have already taken collective action to solve one global atmospheric problem. The effects on the industry of the actions to reduce ozone depletion and global warming are now apparent. Ozone depletion and global warming an integrated approach. Ozone depletion and climate change are linked in a number of ways, but ozone depletion is not a major cause of climate change. Is depletion of the ozone layer the principal cause of climate change.
Pdf there are many situations where human activities have significant effects on the environment. Causes of ozone layer depletion and its effects on human. The ozone layer helps to protect life from harmful ultraviolet radiation. Human activities cause ozone depletion and global warming. Some halocarbons ozone depleting substances, or odss deplete the ozone layer, while others greenhouse gases, or ghgs are thought to contribute to global warming. Are those holes in the ozone layer the main factor responsible for global warming. It was originally thought that an ozone hole only existed above. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. The term ozone hole refers to the depletion of the protective ozone layer in the upper atmosphere stratosphere over earths polar regions. 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. 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.
The global, annual average atmospheric lifetime of btp in the former scenario was 7. Atmospheric ozone has two effects on the temperature balance of the earth. It was agreed on 16 september 1987, and entered into force on 1 january 1989. Changes in ozone and climate are directly linked because ozone absorbs solar radiation and is also a greenhouse gas. Ozone depletion may also make it harder to combat global warming, because more uv light penetrates the worlds oceans and destroys plankton. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Learn more about the process, causes, and effects of ozone layer depletion. Measured infrared absorption data are also combined with the lifetime to show that the 20. Strictly, stratospheric ozone depletion is not part of global climate change, which occurs in the troposphere. 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.
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. Why global mean surface temperatures began to rise around 1970 after having been relatively constant since 1945. 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. It absorbs solar ultraviolet radiation, which heats the stratosphere.
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. Oh reaction rate constant, ir absorption spectrum, ozone. What is the relationship between the greenhouse effect, ozone. Ozone layer depletion fueled by falling temperature in the stratosphere can be termed as yet another hazardous effect of global warming on the earth. However, various factors have led to the depletion and damage of this protective layer. 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. The montreal protocol on the protection of the global ozone layer is a somewhat. In many cases there are several available halon replacements. 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. It will magnify the effects of ultraviolet rays on human health. Ozone depletion is usually worse further from the equator. 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 next most significant greenhouse gas is surface, or lowlevel, ozone o3. All of the ozone depleting substances controlled by.
Possible effects of global warming climate and weather adapting to climate change greenhouse effect human impacts on the ozone layer. This paper presents natural refrigerants as the ideal, environmentally friendly refrigerants and the ultimate solution to the problems of ozone depletion and global warming. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. Global warming is predicted to cause rising ocean levels, lower plant productivity, and more frequent and dangerous weather patterns. Ozone depletion and global warming and their health effects are discussed in some detail in. The the causes and effects of global ozone depletion have been illuminated in this paper. The treaty is structured around several groups of halogenated hydrocarbons that deplete stratospheric ozone. Effects on eyes the major cause of blindness in this world is. The use of cfcs not only destroys the ozone layer but also leads to 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.