atmospheric ozone depletion

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  • 1. Atmospheric Ozone Depletion Surendra BamDepartment of Environmental Sciences, Andhra University, Visakhapatnam, Andhra Pradesh Email: surendra_bam777@yahoo.comOZONE IN OUR ATMOSPHERE THE OZONE DEPLETION PROCESSMontreal ProtocolTo date, production of banned ozone depleting chemicals has been reduced by 90%. Other ozone depleting chemicals are scheduled to be phased outAntarctica Ozone Holeby 2030. However, use will continue long after production is banned. Why Uncertainty? Even if this reduction in ozone depleting chemicalsoccurs on schedule, it will take at least 50 to 100years for the atmospheric ozone layer to return toits state before 1980. This is because once released,these ozone depleting chemicals continue todestroy atmospheric ozone for many years. Themost common agents (CFCs) remain active forapproximately 50-150 years.Referenceshttp://www.esrl.noaa.gov/csd/assessments/ozonehttp://www.epa.gov/ozone/sciencehttp://www.nasa.gov/ False-color view of total ozone over the Antarctic pole. The purple and blue colors are where there is the least ozone, and the yellows and reds are where there is more ozone.RESEARCH POSTER PRESENTATION DESIGN 2011www.PosterPresentations.com