The ozone layer is mainly found in the lower portion of the stratosphere. 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 thinning is most pronounced in the polar regions, especially over antarctica. Review vocabulary with flashcards or skim through our library of thousands of common. Ppt ozone depletion powerpoint presentation free to. Global collaboration and regulation aims to reduce the emissions. 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. 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. 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. Stratospheric ozone protects us from much of the suns harmful ultraviolet radiation by interacting with uv rays in a series of. Learn what cfcs are, how they have contributed to the ozone.
Ozone layer depletion means the thinning of the ozone layer present in the upper atmosphere. Ozone gas is perceptibly blue in colour and has a characteristic pungent smell. In addition to its regulatory programs for protecting the ozone layer ozone layerthe region of the stratosphere containing the bulk of atmospheric ozone. Report video issue go to live event javascript must be enabled in order to access cspan videos. Ozone stock footage royalty free ozone stock videos pond5.
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. 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. Manmade cfcs, naturally occurring polar stratospheric clouds, and the return of sunlight set off incredible destruction of the protective ozone layer. Witnesses testified on the effects of pollution and other factors on ozone levels. However, mounting evidence suggests that ozone layer is diminishing rapidly. These radiations can cause severe diseases in humans such as skin cancer, eye damage and genetic mutations etc 9. Researchers indicate that many of the effects of ozone depletion on human health tend to apply for animals, too. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. But ozone also absorbs harmful components of sunlight, known as ultraviolet b, or uvb. Ozone depletion stock pictures, royaltyfree photos. The ozone layer helps to protect life from harmful ultraviolet radiation. Ozone movies watch a movie of the daily progression through a season or the annual progression of the means for a month.
Changes in ozone amounts are closely linked to temperature, with colder temperatures resulting in more polar stratospheric clouds and lower ozone levels. Scientists have found a huge gape in the ozone layer over antarctica. Download hires video the montreal protocol is an international treaty designed to protect the ozone layer. 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. Required specs and supported host applications for windows and macos. 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. Fire extinguishers contain halons and methyl bromide in the form of pesticides can also be also a cause for the depletion. After thinning at alarming rates in the 1980s and 90s, the ozone layer. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Ozone depletion facts and information national geographic. Ppt ozone layer depletion powerpoint presentation free. 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. Ozone layer depletion cause, effects, and solutions.
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. Other epa initiatives to protect the ozone layer ozone. Ozone depletion is affecting the human health and environment negatively, as it allows the penetration of uv radiations to reach the earth. Changes in ozone amounts closely follow temperature, with colder temperatures resulting in more polar stratospheric clouds that intensify ozone destruction. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. 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. Ozone depletion is a crucial environmental problem on earth. 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. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Take ozone 9 advanced for a testdrive to see and hear it for yourself. The ozone layer is a deep blanket in the stratosphere made up of comparatively high concentration of the ozone. Ozone layer depletion daily current affair article for.
The problems and causes associated with ozone depletion arise from human activities. Ozone 64bit download free ozone ozone layer 2015 video. This video takes a look back at how scientists, industry leaders, and policy makers came together to regulate chlorofluorocarbons cfcs. Hence, cfcs are transporting agents that are responsible for damaging the ozone layer.
The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. It has the potential to absorb around 9799% of the harmful ultraviolet radiations coming. In 1974 chemists sherwood rowland and mario molina published a paper that indicated cfcs were damaging the ozone layer, which protects. 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.
Causes of ozone layer depletion and its effects on human. Pdf download trashing the planet how science can help us deal with acid rain depletion of the ozone read full ebook. Find 30 top ozone layer stock video, broll and other hd footage from istock. A close look at the evolution at the life on earth reveals that initially the. Find highquality ozone depletion stock photos and editorial news pictures from getty images. 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. Sep 26, 2008 the phenomenon of ozone depletion and its links to possible hazard to life forms has captured international attention. Resource library video ozone depletion 101 far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Arctic ozone depletion and stratospheric temperature. Nasa 2012 antarctic ozone hole second smallest in 20 years. The arctic stratosphere has cooled slightly since 1979, but scientists are currently unsure of the cause. The antarctic ozone hole is an annual springtime event above earths frozen, southernmost continent. View the latest status of the ozone layer over the antarctic, with a focus on the ozone hole.
The growing concern over cfc production and the hole in the ozone layer is causing alarm among scientists and citizens. Unlike oxygen o2, ozone has a strong scent and is blue in color. Ozone depletion 1 the world we create nats 101 section 6 turn in your homework. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation.
Depletion of this layer by ozone depleting substances ods will lead to higher uvb levels, which in turn will cause increased. Thus, ozone layer depletion has become a major concern among the environmentalists. A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone. This website addresses stratospheric ozone issues, including the science of ozone depletion, epas regulatory approach to protecting the ozone layer, epa. 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. The ozone layer is found in the lower portion of the earths atmosphere. Ozone is a triatomic form of oxygen o 3, found in the earths atmosphere. Depletion ozone layer and lord abnev com ask how green is yo. This, in turn, will lead to the breakdown of ozone. Satellite instruments monitor the ozone layer, and we use their data to.
See the difference between ozone elements, standard, and advanced. Building on a 17year legacy, ozone 9 brings balance to. This is the cause for the nearly 80% of the ozone depletion. Ozone layer depletion definition, causes, solutions toppr. The production and emission of chlorofluorocarbons cfcs, is the leading cause of ozone layer depletion. Project report on ozone depletion environmental pollution. The emission of ozonedepleting gases are threatening the earths ozone layer. Ozone depleting substances are the substances such as chlorofluorocarbons, halons, carbon tetrachloride, hydrofluorocarbons, etc. Sh seasons are within a single year julydecember while nh seasons overlap a year boundary novembermay. There have been several concerns about ozone depletion.
Watch the video clip showing the breakup of ozone molecules by chlorine atoms. The latter phenomenon is referred to as the ozone hole. The forgotten story of the hole in the ozone layer and. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. Ozone depletion consists of two related events observed since the late 1970s. 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.
The phenomenon of ozone depletion and its links to possible hazard to life forms has captured international attention. Elizabeth cook and ronald bailey discussed the severity of the depleting ozone layer. India is a signatory to the montreal protocol, which sets the agenda for. A free powerpoint ppt presentation displayed as a flash slide show on id. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. Causes, effects and solutions of ozone layer depletion. Following is the list of some of the main ozone depleting substances and the sources from where they are released. Atmospheric motions drive the yeartoyear temperature changes. There are also springtime polar tropospheric ozone depletion. Great video footage that you wont find anywhere else. Why the hole in the atmospheric ozone layer above us. Thethe discoverydiscovery team who discovered the hole 1985. Your browser does not currently recognize any of the video formats. The ozone layer comprises a belt of ozone molecules located primarily in the lower stratosphere.
The emission of ozone depleting substances has been damaging the ozone layer. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Ozone is formed by photochemical reaction, followed by three body reaction. Special issue on the international day for the preservation of the. The ozone layer lies approximately 1540 kilometers 1025 miles above the earths surface, in the stratosphere. 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.
If interested, you can purchase this powerpoint from my online store. Ozone layer stock videos and royaltyfree footage istock. The third body m absorbs the excess energy liberated by the above reaction and there by stabilise the o 3 ozone molecule. Ozone layer depletion freeware free download ozone layer. Near the earths surface, those reactions cause rubber to crack, hurt plant life, and damage peoples lung tissues. It is responsible for absorbing most of the suns harmful ultraviolet radiation before it. But through domestic and international action, the ozone layer is healing and should fully recover by about 2065. Be cool and save the ozone layer, a new video on the occasion of.
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