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. Depletion of this layer by ozone depleting substances ods will lead to higher uvb levels, which in turn will cause increased skin cancers and cataracts and potential damage to some marine organisms, plants, and plastics. Get latest news information, articles on ozone depletion updated on march 26, 2020 16. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. Find 30 top ozone layer stock video, broll and other hd footage from istock. The thinning or reduction of ozone depletion is most prominent in the polar regions, especially over antarctica. Sh seasons are within a single year julydecember while nh seasons overlap a year boundary novembermay. India is a signatory to the montreal protocol, which sets the agenda for.
Why the hole in the atmospheric ozone layer above us. Manmade cfcs, naturally occurring polar stratospheric clouds, and the return of sunlight set off incredible destruction of the protective ozone layer. Ozone layer depletion cause, effects, and solutions. This video is available in both english and spanish audio, along with corresponding closed captions. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. The protective ozone layer that started depleting heavily in the 1980s is on a recovery mode according to a new assessment by 300 scientists across t. Ozone depletion 101 far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation.
This series of satellite images shows the ozone hole on the day of its maximum depth from 1979 through 2018. This, in turn, will lead to the breakdown of ozone. Acid raid, ozone depletion contributed to ancient extinction. Ozone is highly corrosive and toxic and is used as a disinfectant. Just click the free ozone download button at the top left of the page. Ozone depletion occurs when the natural balance between the production and destruction of ozone in the stratosphere is tipped in favor of destruction. Chlorofluorocarbons mix with atmospheric gases and reach the stratosphere, where they are decomposed by uv rays to produce chlorine free radicals. The committee discusses the montreal protocol on elements that reduce the ozone layer and also a conference in vienna.
Causes and effects of ozone layer depletion that are. Our powerpoint presentation about ozone depletion, its effects and its causes. Ozone gas in the stratosphere helps protect life on earth by absorbing damaging ultraviolet rays. Seasonal ozone holes have been observed over both the antarctic and arctic regions. Since india already receives high doses of ultraviolet uvb radiation, and is at the threshold go to speak, effects of ozone layer depletion. View the latest status of the ozone layer over the antarctic, with a focus on the ozone hole. Addressing ozone layer depletion ozone layer protection. The latter phenomenon is referred to as the ozone hole. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. Ozone layer research and technical resources ozone layer. Ozone depletion free download as powerpoint presentation. Ozone layer depletion ozone layer depletion is the gradual thinning of the earths ozone layer in the upper atmosphere caused due tho release of chemical compounds containing gaseous bromine or chlorine from industries or other human activities.
The ozone hole is a region of depleted layers of ozone above the antarctic region, whose creation is linked to increased cases of skin cancer. Ozone o3 is present in 1 ppm in the upper stratosphere, and it absorbs virtually all of the uv radiation from the sun. Learn more about the process, causes, and effects of ozone layer depletion. Evidence of midlatitude ozone depletion and proof that the antarctic ozone hole was caused by humans spurred policy makers from the late 1980s onwards to. There is dynamic equilibrium between the production and decomposition of ozone. The thinning is most pronounced in the polar regions, especially over antarctica. The search for signs of recovery of the ozone layer nature. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earths atmosphere. What are the reactions involved for ozone layer depletion. Download 2,383 ozone layer stock photos for free or amazingly low rates.
However, mounting evidence suggests that ozone layer is diminishing rapidly. Today, it is a worldwide concern that has been addressed by several international organizations. Ppt ozone depletion powerpoint presentation free to. How science can help us deal with acid rain, depletion of the ozone, and.
Hence, cfcs are transporting agents that are responsible for damaging the ozone layer. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Great video footage that you wont find anywhere else. The antarctic ozone hole is an annual springtime event above earths frozen, southernmost continent. Ozone depletion is the term commonly used to describe the thinning of the ozone layer in the stratosphere. It also offers the solutions undertaken so far to remedy this global problem and improve the natural protective ozone sunscreen against the ultraviolet radiation. Ozone depleting definition of ozone depleting by medical.
The phenomenon of ozone depletion and its links to possible hazard to life forms has captured international attention. Ozone depletion ozone depletion chlorofluorocarbon. Ozone layer stock photos download 2,383 royalty free photos. The disturbance of this equilibrium results in ozone depletion. Let us have a detailed look at the various causes and effects of ozone layer depletion. Mar 25, 2020 pollution, pollutants and ozone layer depletion class 11 notes edurev is made by best teachers of class 11. 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. However, various factors have led to the depletion and damage of this protective layer. Ozone depletion facts and information national geographic. In this video he discusses chlorofluorocarbons effects on the ozone layer, what policy. Ozone depletion latest news information updated on march. Getty images offers exclusive rightsready and premium royaltyfree analog, hd, and 4k video that you wont find anywhere else in the world. Download 9 ozone depletion stock photos for free or amazingly low rates. 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.
Pdf download what really causes global warming greenhouse gases or ozone depletion. Ozone depletion consists of two related events observed since the late 1970s. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Two decades ago stratospheric ozone depletion was mainly the interest of atmospheric scientists. Additional information about license you can found on owners sites. Witnesses testified on the effects of pollution and other factors on ozone levels. 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. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. It contains some videos and gif at thte end from an external source. Ozone layer depletion dr binocs show kids learning videopeekaboo kidz.
Ozone depletion eric lin, cody lu natalie qin, silvia shi the ozone layer is essential to organisms because it protects them from harmful effects of the. Ppt ozone layer depletion powerpoint presentation free. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Generally, we find thinning or depletion of the ozone layer to the extent of ozone hole creation over the southern pole i.
If our ozone the vitality of our very existences is not protected then we are ultimately doomed. A free powerpoint ppt presentation displayed as a flash slide show on id. It can be found in small concentrations in the troposphere where it is considered a pollutant. Unlike oxygen o2, ozone has a strong scent and is blue in color. The ozone layer helps to protect life from harmful ultraviolet radiation. Global warming is linked to ozone layer depletion in 2 ways. The ozone layer is mainly found in the lower portion of the stratosphere.
The forgotten story of the hole in the ozone layer and. The current depletion in the arctic looks set to surpass smaller holes recorded in 1997 and 2011. The severe depletion of the ozone layer in any particular area is called ozone hole. Find professional ozone hole videos and broll stock footage available for license in film, television, advertising and corporate uses. Pollution, pollutants and ozone layer depletion class 11. Ozone layer is recovering latest burning issues free. 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. Paul newman is the chief scientist for atmospheric sciences at nasas goddard space flight center. The depletion of the ozone describes two closely related but distinct phenomena which have been repeatedly observed since the latter 1970s. Ozone layer that started depleting in 1980s healing. This document is highly rated by class 11 students and has been viewed 1098 times. Manmade chlorofluorocarbons and other ozonedepleting substances are currently causing a downward trend in stratospheric ozone levels over most of. Clicking this link will start the installer to download ozone free for windows.
The first report of depletion in o 3 layer came out in the 1980s by an atmospheric scientist in antarctica. Ozone is ozone is a form of oxygen with 3 oxygen atoms o3. Ozone layer stock videos and royaltyfree footage istock. Ozone movies watch a movie of the daily progression through a season or the annual progression of the means for a month. Learn what cfcs are, how they have contributed to the ozone. Largest ever hole in ozone layer opens over north pole. Satellite instruments monitor the ozone layer, and we use their data to. If interested, you can purchase this powerpoint from my online store. Ozone depletion stock photos download 9 royalty free.
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