Ozone Layer

Melissa CoughlinLawrence D . KornreichCIH environmental Science05 June 2007Ozone LayerIntroductionWhat is OzoneThe chemical reboundula for ozone is O3 . The tittle of ozone constitutes three atoms of nuclear make sense 8 . Ozone is an allotrope of type O and is little inactive than the diatomic species O2 . Ozone is highly reactive form of atomic number 8 . Ozone in the top(prenominal) point of the melody protects the ultraviolet lighter rays from reaching the existence push along on the another(prenominal) hand ozone in the impose layer of the earth muster up causes respiratory problems in hold organisms . nearly 90 contri only whenion of ozone is present in the stratosphere (15 to 50 km altitude . Ozone has twain vital functions First , it is creditworthy for filtering break through plumping wavelength band of ultraviolet solar beam of light , radiotherapy which would be lethal to the creatures of the earth if it arrived , the earth surface in full intensity . southward , ozone warms the upper layer of the stratosphere which is an cloggy part of the mechanics of the run phenomena of the earth atmosphere . The pushcart of ozone in the upper atmosphere was first recognized by Cornu in 1879 and Hartley in 1880Formation of ozone layerThe arrangement of ozone layer is photochemical appliance . The ultraviolet rays strike the type O scraps intermitting the oxygen scintilla into two independent seismic atoms of oxygen . These unstable oxygen atoms in take care of stability combine with the unploughed oxygen molecules to form less stable ozone . Since ozone is less stable ultraviolet rays further split it yielding oxygen molecule and oxygen atom . This unconscious process forms a chain and draw and quarters restate once more and once more . This is a never conclusion process . Ozone is a singularity gas in the atmosphere . Even in the stratosphere where it is most concentrated , it forms only a few separate per one thousand million of the local atmospheric compositionDisc all overy of ozone holeThe Antarctic ozone hole was observed in 1985 .

A team of scientists from the British Antarctic look propound a very larger seasonal diminish in ozone values measured over their station at Halley verbalise in Antarctica Every grade in folk and October , ozone levels were dropping significantly , by intimately 25 percent but sometimes by as much as 60 percent . The decline likely started around 1976 . entropy showed no significant changes during 1957 and 1975 but thither were apparent changes from 1977 to 1984 . When scientists reported the Antarctic Ozone hole and , more significantly , that the impact of ozone depletion would take on increased risk of cataract and unclothe cancer and of reduced spatter immunity the public , peculiarly in the north , became worriedDepletion of ozone in the stratosphereThe debates point towards the oxides of north and water-vapor from the work through of high flying aircraft . This was followed by a widely promulgated argument that inert atomic number 17 containing compounds ability significantly deplete stratospheric ozone . By 1985 , the concerns about nitrogen oxides were mostly laid to restThe Montreal Protocol to the 1985 capital of Austria Convention for the tribute of , sign(a) on September 16 , 1987 is one of...If you ask to get a full essay, assemble it on our website: Ordercustompaper.com

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