Ozone in the stratosphere—a layer of the atmosphere between 15 and 50 kilometers (10 and 31 miles) above us—acts as a shield to protect earth's surface from the sun's harmful ultraviolet radiation. Ozone depletion is the process where ozone holes are created in theozone layer it is caused due to the action of chloro-floro-carbonson the ozone molecule to break it down to oxygen. Ozone is a simple chemical compound that contains only oxygen atoms, and its effects depend on where in the atmosphere it occurs in the upper stratosphere, it forms a protective shield against solar ultraviolet radiation, but near the ground, it's a pollutant that can cause respiratory ailments in humans and animals. 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.
The term ozone depletion actually refers to two separate events: the steady decline of ozone in the stratosphere at a rate of 3% per year, and the seasonal decrease of the ozone layer over the polar region. Chlorofluorocarbons and ozone depletion million slice of the chemical industry the importance of ozone made depletion of the ozone layer a real and present. Earth's atmosphere and the ozone layer earth's atmosphere at sea level is an approximately 80:20 solution of nitrogen and oxygen gases, with small amounts of carbon dioxide, water vapor, and the noble gases, and trace amounts of a variety of other compounds (table 32 the composition of earth's atmosphere at sea level. The future atmospheric concentrations of cfc-11, and their effect on the ozone layer, will mainly depend on the continued release from insulation foams, kjeldsen said.
The ozone layer or ozone shield is a region of earth's stratosphere that absorbs most of the sun's ultraviolet radiation it contains high concentrations of ozone (o 3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. -ozone occurs both in the earth's ground level and the upper atmosphere-ground-level ozone in the troposphere is bad ozone, a main ingredient of urban smog, and is harmful to breathe, damages crops/trees/other vegetation.
The term 'ozone hole' refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over earth's polar regions people, plants, and animals living under the ozone hole are harmed by the solar radiation now reaching the earth's surface—where it causes health problems, from eye damage to skin cancer. The kinetics of atmospheric ozone ozone is a minor component of the earth's atmosphere (002 - 01 parts per million based on volume (ppmv)), yet it has a significant role in sustaining life on earth. Cfcs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation absorbing capacity jun 18, 2015 layer depletion is one of the most serious problems. Ozone depletion describes two related events observed since the late 1970s: 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.
Five layers of atmosphere cloak the earth the lower atmospheric layer, in which people live and breathe, is the troposphere two layers that make up the middle atmosphere -- the stratosphere, where jets fly, and the mesosphere -- cover the troposphere. The ozone hole refers to the overal thinning of the earth's ozone layer during the artic spring what are the major features of the molina and roland hypothesis on ozone depletion -the cfcs emitted in the lower atmosphere by human activity are extremely stable. Natural causes of depletion of ozone layer: ozone layer has been found to be affected by certain natural phenomena such as sun-spots and stratospheric winds but this has been found to cause not more than 1-2% depletion of the ozone layer and the effects are also thought to be only temporary.
The ozone layer is one layer of the stratosphere, the second layer of the earth's atmosphere the stratosphere is the mass of protective gases clinging to our planet the stratosphere gets its name because it is stratified, or layered: as elevation increases, the stratosphere gets warmer the. Ozone layer on the mend, thanks to chemical ban science magazine the ozone layer was doomed until a handful of scientists stood up to power 6 chemical reactions that changed history. The importance of ozone from an environmental standpoint, ozone is a confusing molecule in the troposphere, the region of the atmosphere from earth's surface up to about 6 miles, ozone is a pollutant that is a component of photochemical smog.
The emission of ozone depleting substances has been damaging the ozone layer but through domestic and international action, the ozone layer is healing and should fully recover by about 2065 this website addresses stratospheric ozone issues, including the science of ozone depletion, epa's regulatory approach to protecting the ozone layer, epa. Basic ozone layer science the earth's ozone layer ozone layer the region of the stratosphere containing the bulk of atmospheric ozone the ozone layer lies approximately 15-40 kilometers (10-25 miles) above the earth's surface, in the stratosphere. The ozone layer—a high-altitude expanse of oxygen molecules that protects us from the sun's ultraviolet rays—has been on the mend for the past decade or so but a newly discovered threat.