Near the earths surface, those reactions cause rubber to crack, hurt plant life, and damage peoples lung tissues. The first report of depletion in o 3 layer came out in the 1980s by an atmospheric scientist in antarctica. Oct 22, 2015 a class of widely used chemical coolants known as hydrofluorocarbons hfc contributes to ozone depletion by a small but measurable amount, countering a decadesold assumption, according to a new nasa study. There have been several concerns about ozone depletion. The problems and causes associated with ozone depletion arise from human activities. Special issue on the international day for the preservation of the.
Ppt ozone layer depletion powerpoint presentation free to. Ozone depletion, gradual thinning of earth s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. Changes in ozone amounts are closely linked to temperature, with colder temperatures resulting in more polar stratospheric clouds and lower ozone levels. The antarctic ozone hole is an annual springtime event above earths frozen, southernmost continent. The growing concern over cfc production and the hole in the ozone layer is causing alarm among scientists and citizens. Joe farman, brian gardiner, and jonathan shanklin british atlantic survey research station, holly bay, antarctic coast in 1985, using satellites, balloons,in 1985, using satellites, balloons, and surface stations, a team ofand surface stations, a team of researchers had.
Sh seasons are within a single year julydecember while nh seasons overlap a year boundary novembermay. Ozone layer depletion freeware free download ozone layer. Ozone layer depletion means the thinning of the ozone layer present in the upper atmosphere. The ozone layer that shields life from the suns cancercausing ultraviolet rays is showing its first sign of thickening after years of dangerous depletion, a u.
Mar 21, 2020 ozone depletion, gradual thinning of earth s 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 ozone layer is found in the lower portion of the earths atmosphere. Watch the video clip showing the breakup of ozone molecules by chlorine atoms. Satellite instruments monitor the ozone layer, and we use their data to. The emission of ozone depleting substances has been damaging the ozone layer. This website addresses stratospheric ozone issues, including the science of ozone depletion, epas regulatory approach to protecting the ozone layer, epa. Your browser does not currently recognize any of the video formats. The third body m absorbs the excess energy liberated by the above reaction and there by stabilise the o 3 ozone molecule. 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 representations.
This, in turn, will lead to the breakdown of ozone. Relationship between the ozone depletion and the extreme precipitation in austral summer aug 29, 20 ozone depletion is a major climate driver in the southern hemisphere. 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 representati. Take ozone 9 advanced for a testdrive to see and hear it for yourself. The ozone layer is mainly found in the lower portion of the stratosphere. A class of widely used chemical coolants known as hydrofluorocarbons hfc contributes to ozone depletion by a small but measurable amount, countering a decadesold assumption, according to a new nasa study. It is responsible for absorbing most of the suns harmful ultraviolet radiation before it. India is a signatory to the montreal protocol, which sets the agenda for. Changes in ozone amounts closely follow temperature, with colder temperatures resulting in more polar stratospheric clouds that intensify ozone destruction.
Arctic ozone depletion and stratospheric temperature. A close look at the evolution at the life on earth reveals that initially the. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Ozone depletion stock pictures, royaltyfree photos. Causes of ozone layer depletion and its effects on human. Hence, cfcs are transporting agents that are responsible for damaging the ozone layer. Project report on ozone depletion environmental pollution.
Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Global collaboration and regulation aims to reduce the emissions. Causes and effects of ozone layer depletion that are. Stratospheric ozone protects us from much of the suns harmful ultraviolet radiation by interacting with uv rays in a series of. Depletion of this layer by ozone depleting substances ods will lead to higher uvb levels, which in turn will cause increased. Witnesses testified on the effects of pollution and other factors on ozone levels.
There are also springtime polar tropospheric ozone depletion. Report video issue go to live event javascript must be enabled in order to access cspan videos. See the difference between ozone elements, standard, and advanced. Nasa 2012 antarctic ozone hole second smallest in 20 years. Sir robert watson named champion of biodiversity preservation and combating. Ozone layer depletion definition, causes, solutions toppr. 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. Find 30 top ozone layer stock video, broll and other hd footage from istock. Why the hole in the atmospheric ozone layer above us. Ozone is formed by photochemical reaction, followed by three body reaction. Required specs and supported host applications for windows and macos.
But ozone also absorbs harmful components of sunlight, known as ultraviolet b, or uvb. May 24, 2015 pdf download trashing the planet how science can help us deal with acid rain depletion of the ozone read full ebook. If interested, you can purchase this powerpoint from my online store. View the latest status of the ozone layer over the antarctic, with a focus on the ozone hole. The phenomenon of ozone depletion and its links to possible hazard to life forms has captured international attention. The latter phenomenon is referred to as the ozone hole. Ozone layer depletion is one of the major problems for the atmosphere and also for all the living beings including the flora and fauna of this earth. A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone. The ozone layer is a deep blanket in the stratosphere made up of comparatively high concentration of the ozone.
As a result of its chemical composition, ozone is regarded as a special type of oxygen as it contains three oxygen molecules o3 as opposed to the usual two oxygen molecules o2. Building on a 17year legacy, ozone 9 brings balance to. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the stratosphere. Download hires video download ozone max image, download unlabeled ozone max image washington the average area covered by the antarctic ozone hole this year was the second smallest in the last 20 years, according to data from nasa and national oceanic and atmospheric administration noaa satellites. Download premium images you cant get anywhere else. Ppt ozone layer depletion powerpoint presentation free.
Thethe discoverydiscovery team who discovered the hole 1985. Sep 26, 2008 the phenomenon of ozone depletion and its links to possible hazard to life forms has captured international attention. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. This is the cause for the nearly 80% of the ozone depletion. Researchers indicate that many of the effects of ozone depletion on human health tend to apply for animals, too. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Ozone depletion is affecting the human health and environment negatively, as it allows the penetration of uv radiations to reach the earth. Jun, 2017 relationship between the ozone depletion and the extreme precipitation in austral summer aug 29, 20 ozone depletion is a major climate driver in the southern hemisphere. The forgotten story of the hole in the ozone layer and. Find highquality ozone depletion stock photos and editorial news pictures from getty images.
Fire extinguishers contain halons and methyl bromide in the form of pesticides can also be also a cause for the depletion. In 1974 chemists sherwood rowland and mario molina published a paper that indicated cfcs were damaging the ozone layer, which protects. Unlike oxygen o2, ozone has a strong scent and is blue in color. Learn what cfcs are, how they have contributed to the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Review vocabulary with flashcards or skim through our library of thousands of common. Ozone layer stock videos and royaltyfree footage istock. Other epa initiatives to protect the ozone layer ozone. Ozone is a triatomic form of oxygen o 3, found in the earths atmosphere. The ozone layer helps to protect life from harmful ultraviolet radiation.
Oct 27, 2017 the effects of ozone depletion on plants and animals massive amounts of uvb radiation that penetrate our atmosphere do not only affect humans, but also animals and plants. Manmade cfcs, naturally occurring polar stratospheric clouds, and the return of sunlight set off incredible destruction of the protective ozone layer. Thus, ozone layer depletion has become a major concern among the environmentalists. The production and emission of chlorofluorocarbons cfcs, is the leading cause of ozone layer depletion. Ozone layer depletion cause, effects, and solutions. These radiations can cause severe diseases in humans such as skin cancer, eye damage and genetic mutations etc 9. Joe farman, brian gardiner, and jonathan shanklin british atlantic survey research station, holly bay, antarctic coast in 1985, using satellites, balloons,in 1985, using satellites, balloons, and surface stations, a team ofand surface stations, a team of researchers. Ozone 64bit download free ozone ozone layer 2015 video. Elizabeth cook and ronald bailey discussed the severity of the depleting ozone layer. The arctic stratosphere has cooled slightly since 1979, but scientists are currently unsure of the cause. Ppt ozone depletion powerpoint presentation free to. Effects of ozone depletion ozone depletion is affecting the human health and environment negatively, as it allows the penetration of uv radiations to reach the earth. Be cool and save the ozone layer, a new video on the occasion of. The ozone layer comprises a belt of ozone molecules located primarily in the lower stratosphere.
A free powerpoint ppt presentation displayed as a flash slide show on id. The thinning is most pronounced in the polar regions, especially over antarctica. Pdf download trashing the planet how science can help us deal with acid rain depletion of the ozone read full ebook. Ozone depletion consists of two related events observed since the late 1970s.
Learn what cfcs are, how they have contributed to the ozone. In addition to its regulatory programs for protecting the ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone. The emission of ozonedepleting gases are threatening the earths ozone layer. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. Ozone depletion facts and information national geographic. Causes, effects and solutions of ozone layer depletion.
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. Download hires video the montreal protocol is an international treaty designed to protect the ozone layer. But through domestic and international action, the ozone layer is healing and should fully recover by about 2065. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Great video footage that you wont find anywhere else. Ozone gas is perceptibly blue in colour and has a characteristic pungent smell.
Ozone depletion is a crucial environmental problem on earth. This video takes a look back at how scientists, industry leaders, and policy makers came together to regulate chlorofluorocarbons cfcs. Depletion ozone layer and lord abnev com ask how green is yo. However, mounting evidence suggests that ozone layer is diminishing rapidly. Scientists have found a huge gape in the ozone layer over antarctica. It has the potential to absorb around 9799% of the harmful ultraviolet radiations coming. After thinning at alarming rates in the 1980s and 90s, the ozone layer. Atmospheric motions drive the yeartoyear temperature changes. A video synopsis ozone o 3 is an important gas in earths atmosphere that is a pollutant in the troposphere, where we live, but is a protector in the stratosphere over 10 km up.
Ozone movies watch a movie of the daily progression through a season or the annual progression of the means for a month. Ozone depletion 1 the world we create nats 101 section 6 turn in your homework. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. 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. Ozone layer depletion daily current affair article for. Following is the list of some of the main ozone depleting substances and the sources from where they are released. Ozone depleting substances are the substances such as chlorofluorocarbons, halons, carbon tetrachloride, hydrofluorocarbons, etc.
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