Ozone Layer

Melissa CoughlinLawrence D . KornreichCIH Environmental Science05 June 2007Ozone LayerIntroductionWhat is OzoneThe chemical spurtula for ozone is O3 . The tear up of ozone constitutes three atoms of atomic number 8 . Ozone is an allotrope of type O and is less permanent than the diatomic species O2 . Ozone is highly reactive form of type O . Ozone in the top(prenominal) layer of the atm protects the ultraviolet gleaming rays from reaching the earth draw a bead on along on the opposite hand ozone in the lower layer of the earth step forward causes respiratory problems in living organisms . most 90 division of ozone is present in the stratosphere (15 to 50 km altitude . Ozone has 2 vital functions First , it is responsible for filtering break through pear-shaped 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 . Second , ozone warms the upper layer of the stratosphere which is an lumbering part of the mechanics of the weather phenomena of the earth atmosphere . The peddler of ozone in the upper atmosphere was first recognized by Cornu in 1879 and Hartley in 1880Formation of ozone layerThe formation of ozone layer is photochemical instrument . The ultraviolet rays strike the oxygen scraps splitting the oxygen touch into two independent wobbly atoms of oxygen . These unstable oxygen atoms in search of stability combine with the unbroken oxygen molecules to form less stable ozone . Since ozone is less stable ultraviolet rays further split it yielding oxygen molecule and oxygen atom . This process forms a chain and gets restate once more and again . This is a never death process . Ozone is a trace gas in the atmosphere . Even in the stratosphere where it is most conc entrated , it forms only a few separate per ! million of the local atmospheric compositionDisc everywherey of ozone holeThe Antarctic ozone hole was observed in 1985 .

A team of scientists from the British Antarctic look inform a very big seasonal diminish in ozone values measured over their station at Halley Bay in Antarctica Every social class in folk and October , ozone levels were falling significantly , by virtually 25 percent but sometimes by as much as 60 percent . The decline believably started around 1976 . entropy showed no significant changes during 1957 and 1975 but there were apparent changes from 1977 to 1984 . When scientists reported the Antarc tic Ozone hole and , more importantly , that the impact of ozone depletion would take on increased risk of cataract and whittle cancer and of reduced dust immunity the public , particularly in the north , became worriedDepletion of ozone in the stratosphereThe debates point towards the oxides of north and water-vapor from the wear of high flying aircraft . This was followed by a widely print argument that inert atomic number 17 containing compounds cleverness significantly deplete stratospheric ozone . By 1985 , the concerns about nitrogen oxides were mostly laid to restThe Montreal Protocol to the 1985 Vienna Convention for the tribute of , sign-language(a) on September 16 , 1987 is one of...If you ask to get a full essay, order it on our website: OrderCustomPaper.com

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