They can kill plankton, which is a major source of food in the ocean's food chain. This will cause an increase risk of sunburn and skin cancer.
However, man-made chemicals such as CFCs or chlorofluorocarbons are now known to have a very dramatic influence on Ozone levels too. The Nobel Prize in Chemistry in was awarded for research that identified the threat to ozone posed by CFCs and that described key reactive processes in the stratosphere.
Ozone depletion and climate change To support successful regulation attempts, the ozone case was communicated to lay persons "with easy-to-understand bridging metaphors derived from the popular culture" and related to "immediate risks with everyday relevance".
The production and emission of chlorofluorocarbons CFCsis the leading cause of ozone layer depletion. It was utilized as a coolant in home appliances like freezers, refrigerators and air conditioners in both buildings and cars that were manufactured prior to Source gas molecules that are not converted are transported to the stratosphere.
Over the course of several decades, however, human activities substantially altered the ozone layer. This eventually disturbs and affects the entire ecosystem. For humans, excessive exposure to ultraviolet radiation leads to higher risks of cancer especially skin cancer and cataracts.
Please help improve this article by adding citations to reliable sources. Ultraviolet rays of the Sun are associated with a number of health-related, and environmental issues.
Ozone damage on the leaf of an English walnut Juglans regia L. Derivatives of this anion are explosive and must be stored at cryogenic temperatures. CFC molecules are highly stable and can last for up to years. The reactive gases formed from halogen source gases react chemically to destroy ozone in the stratosphere.
The stratosphere is the next layer above the troposphere stretching approximately 15 to 60 kilometers.
Chemical reactions on the surfaces of ice crystals in the clouds release active forms of CFCs. It has been estimated that the ozone layer will recover to levels near the middle of the 21st century. The largest such hole—which has spanned more than The net or overall reaction is that of atomic oxygen with ozone, forming two oxygen molecules.
The residual effects of CFCs accumulating within the atmosphere lead to a concentration gradient between the atmosphere and the ocean. This has led to an increase in the UV radiation reaching the earth. The study of ozone concentration in the atmosphere started in the s.
Some of the effects are mentioned below. The real threat comes from UV-B, which can enter the Earth's atmosphere, and has adverse effects. However, some scientists noted that gains in stratospheric ozone levels have only occurred in the upper stratospherewith declines in ozone concentrations in the lower stratosphere outpacing increases in the upper stratosphere.
In some individuals, it can lead to complications in breathing and often takes place during summer when pollution is rampant in cities where the air is static.
Depletion is so extensive that so-called ozone holes regions of severely reduced ozone coverage form over the poles during the onset of their respective spring seasons.
Scientists believe that the formation of the ozone layer played an important role in the development of life on Earth by screening out lethal levels of UVB radiation ultraviolet radiation with wavelengths between and nanometres and thus facilitating the migration of life-forms from the oceans to land.
Impact on Humans Skin cancer: The main cause for the depletion of ozone is determined as excessive release of chlorine and bromine from man-made compounds such as chlorofluorocarbons CFCs. January marked the end of global production of CFCs and halons under the Protocol.
The results of this research study prompted the signing of a global treaty known as the Montreal Protocol in This explains why a few ppb of chlorine can destroy several ppm of ozone.
Growing concern for ozone depletion led to the adoption of the Montreal Protocol inin order to reduce and control industrial emission of chlorofluorocarbons CFCs. Though the absorption of UV radiations warms the stratosphere but it is important for life to flourish on planet Earth.
In the second half of the 20th Century the amount of ozone in the stratosphere was discovered to be declining, mostly because of increasing concentrations of chlorofluorocarbons CFC and similar chlorinated and brominated organic molecules.
However, their stability comes at a price; they are able to float and remain static high up in the stratosphere. Skin cancer can be very dangerous.
The Danger and Prevention of Ozone Layer Depletion Prev NEXT The Montreal Protocol was an effort to encourage industries to switch to "ozone friendly" products.
The ozone layer is a belt of the naturally occurring gas "ozone." It sits to miles (15 to 30 kilometers) above Earth, and serves as a. Ozone depletion describes two related events observed since the late s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.
Ozone layer, also called ozonosphere, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules (O 3). Approximately 90 percent of the atmosphere’s ozone occurs in the stratosphere, the region.
Ozone layer depletion first captured the attention of the whole world in the latter half ofand since then, a lot of research has been done to find its possible effects and causes. Various studies have been undertaken to find out possible solutions.
It is present in very low concentrations throughout the latter, with its highest concentration high in the ozone layer of the stratosphere, which absorbs most of the Sun's ultraviolet (UV) radiation.
Ozone's odour is reminiscent of chlorine, and detectable by many people at concentrations of as little as ♠ ppb in michaelferrisjr.comal formula: O₃.The ozone layer its characteristics role and the danger of its destruction