Ozonedepleting substances ozone layer protection us epa. Global warming and ozone layer depletion are two different problems see the. The odps of cfc11 and cfc12, and the gwp of co 2 all are assigned a value of 1. But more remains to be done to protect and restore the atmospheric shield that sits in the stratosphere about 9 to 18 miles 15 to 30 kilometers above the earths surface. Global warming also l eads to ozone layer depletion. Ozone layer depletion fueled by falling temperature in the stratosphere can be termed as yet another hazardous effect of global warming on the earth. 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. 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 or to run our cars. 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. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Science environment pollution, acid rain, global warming. 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 depletion displaying top 8 worksheets found for this concept some of the worksheets for this concept are activity pack for key stages 2 3, tthe ozone hole and global he ozone hole and global global, national aeronautics and the ozone hole space administratio n, the good the bad and the ugly of ozone, causes of ozone layer depletion and its effects on human, ozone. But through domestic and international action, the ozone layer is healing and should fully recover by about 2065. Uv b radiation damages dna molecules and can cause genetic defects on the outer surfaces of plants and animals, including human skin skin cancer. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. The role that ozone depletion is playing in warming the southern ocean is far less than the role of greenhouse gas emissions, though, and so far, those emissions have been a. Oct 12, 2005 global warming is predicted to cause rising ocean levels, lower plant productivity, and more frequent and dangerous weather patterns. Ozone depletion, greenhouse gases, and climate change the. 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. Effects on eyes the major cause of blindness in this world is. The key difference between ozone depletion and global warming is that ozone depletion is the decrease in the thickness of the ozone layer, whereas global warming is the increase of heat in the atmosphere. Jun 14, 2017 manmade global warming is the largest scientific fraud ever, based on a single grain of fact out of a beach full of sand. The ozone layer, 12 to 19 miles above earth, protects life on earth by absorbing harmful solar ultraviolet radiation. Evs global warming, ozone depletion ppt free download as powerpoint presentation. Figure q182 top panel using their ozone depletion potentials odps and global warming potentials gwps, which indicate the effectiveness of each gas in causing ozone depletion and climate change, respectively.
This page provides information on compounds recognized as ozone depleting substances ods odsa compound that contributes to stratospheric ozone depletion. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Ozone layer protection european commission european union. It discusses about dangerous effects of pollution like acid rain. Ozone in the stratosphere absorbs uv b radiation from sunlight. This idea connects two issues global warming and depletion of ozone in the upper atmosphere inappropriately, which diverts attention from the main cause of global warming. The 1989 montreal protocol successfully phased out cfc production and use. Ozone depletion significant concentrations of ozone o3 exist in the lower elevations of the stratosphere. The ozone hole and global warming fact file strong winds blowing around antarctica form a polar vortex which isolates air over antarctica from the rest of the world. If the global warming trend continues, the results could be depressing indeed. It is thought by many to be caused by our use of fossil fuels such as oil, gas and coal.
It also explains about different pollutants and how they are damaging the environment. Pdf there are many situations where human activities have significant effects on the environment. Pdf causes of ozone layer depletion and its effects on. Ozone depletion facts and information national geographic. Ozone depletion increases the risks of sunburn and skin cancer. In many cases there are several available halon replacements. Is global warming just a myth like the ozone layer depletion.
Global warming is the rise in the average temperature of earths atmosphere and oceans since the late 19th century and its projected continuation. The ozone hole and global warming are not the same thing, and neither is the main cause of the other. Progress report 2003 united nations environment programme, environmental e. The climate system involves the atmosphere specifically processes within the troposphere, such as air circulation patterns land surfaces and oceans. A warming trend and stratospheric ozone depletion have been observed in europe over the last four decades. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. Ozone depletion, greenhouse gases, and climate change. Causes of ozone layer depletion and its effects on human. The treaty is structured around several groups of halogenated hydrocarbonsthat deplete stratospheric. Over the past 30 years humans have made progress in stopping damage to the ozone layer by curbing the use of certain chemicals. Proceeding, of the joint symposium on ozcne depletion, g reenhouse gases and climate change, held at the national academy of sciences, mar. A new study shows that half of all arctic warming and corresponding sealoss during the late 20th century was caused by ozone depleting substances. Since india already receives high doses of ultraviolet uvb radiation, and is at the threshold go to speak, effects of ozone layer depletion.
Understanding that global warming is caused by ozone depletion, not greenhouse gases, has major implications for investments in energy. Download a pdf of ozone depletion, greenhouse gases, and climate change by the national research council for free. There is widespread scientific interest in better regulation of. If ozone depletion is the primary cause of global warming, the major increases in temperature. Ozone depletion reasons, impacts, prevention by reshma. Tthe ozone hole and global he ozone hole and global global. Ozone o 3 depletion does not cause global warming, but both of these environmental problems have a common cause. Pdf ozone depletiona warning of global warming researchgate. Ozone depletion may also make it harder to combat global warming, because more uv light penetrates the worlds oceans and destroys plankton. Why global mean surface temperatures began to rise around 1970 after having been relatively constant since 1945. Ozone depletion and global warming are two major environmental concerns the worlds population face today. This document is part of the information upon which the parties to the united nations montreal protocol will base their future decisions regarding ozone depleting substances, their alternatives, and protection of the ozone layer.
This paper compares potential ozone depletion and global warming for halon 1 and. The ozone depletion theory of global warming provides, for the first time, a clear, straightforward explanation for observations not easily explained by greenhousegas theory. Essay on ozone depletion and the environment 1505 words 7 pages. International relations political science regional focusarea studies environmental law, international interpretation and construction global warming reports international environmental law ozone layer depletion. The montreal protocol on the protection of the global ozone layer is a somewhat. Difference between ozone depletion and global warming. Yes, with all things being equal, more co2 does add a very small amount of warming, but very little. Volcanoes and ozone are missing from the climate change debate. Global warming and the depletion of the ozone o3 layer the average surface temperature on earth has increased approximately 1. The world health organization was established in 1948 as a. 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.
Ods include chlorofluorocarbons cfcs, hydrochlorofluorocarbons hcfcs, halons, methyl bromide, carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform. Essay on global warming and the depletion of the ozone o3 layer. Timeline of stratospheric ozone depletion and observations. Publications about the ozone depletion theory of global warming. Pdf ozone depletion, greenhouse gases, and climate change. Ozone depletion and the environment there is overwhelming scientific evidence that manmade chemicals are destroying the ozone layer nobel prizes have already been awarded for the research. Volcanoes and ozone are missing from the climate change. This website addresses stratospheric ozone issues, including the science of ozone depletion, epas regulatory approach to protecting the ozone layer, epaapproved alternatives to ozone depleting substances, and sun safety. It is the latest in a long series of scientific assessments that have informed the parties. Cfcs also contribute to global warming, with a global warming potential.
Is depletion of the ozone layer the principal cause of. 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 depletion consists of two related events observed since the late 1970s. Instead of looking back at the successful cfc phaseout, the u. Protecting the ozone layer and reducing global warming undp. 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. Abstract there are many situations where human activities have significant effects on the environment. Ozonedepleting substances caused half of late 20th. It was agreed on 16 september 1987, and entered into force on 1 january 1989. Learn what cfcs are, how they have contributed to the ozone. Ozone depleting potential odp is the ratio of the impact on ozone caused by a chemical compared to the impact of a similar mass of cfc11.
The effects on the industry of the actions to reduce ozone depletion and global warming are now apparent. Spectrometer toms multimedia files that show the history of the ozone hole. Therefore, the economic activities of the human have resulted in depletion of the ozone layer and increasing the global warming on the earth and it accounts to 82% of the total ozone layer depletion and global warming desmet and rossihansberg 2015. Are those holes in the ozone layer the main factor responsible for global warming. Ozone depletion and global warming are two major environmental concerns with serious implications for the future development of the refrigerationbased industries. Ozone layer is an international treaty designed to protect the ozone layerby phasing out the production of numerous substances that are responsible forozone depletion. Twenty questions and answers about the ozone layer. Global warming potential gwp is the ratio of the warming caused by a substance compared to the warming caused by a similar mass of carbon dioxide. Ozone is a variant of oxygen, the ozone molecule having three atoms of oxygen. Experts blame ozonelayer depletion on manmade chem icals containing. In 1987, a group of nations signed a document called the montreal protocol. Choose from 500 different sets of climate and climate change ozone depletion flashcards on quizlet.
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