atmospheric ozone depletion
TRANSCRIPT
RESEARCH POSTER PRESENTATION DESIGN © 2011
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OZONE IN OUR ATMOSPHERE THE OZONE DEPLETION PROCESS
Antarctica Ozone Hole
Montreal Protocol
Why Uncertainty? Even if this reduction in ozone depleting
chemicals occurs on schedule, it will take at least 50 to 100 years for the atmospheric ozone layer to return to its state before 1980. This is because once released, these ozone depleting chemicals continue to destroy atmospheric ozone for many years. The most common agents (CFCs) remain active for approximately 50-150 years.
Atmospheric Ozone DepletionDepartment of Environmental Sciences, Andhra University, Visakhapatnam, Andhra Pradesh
Email: [email protected]
Surendra Bam
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.
To date, production of banned ozone depleting chemicals has been reduced by 90%. Other ozone depleting chemicals are scheduled to be phased out by 2030. However, use will continue long after production is banned.
References
•http://www.esrl.noaa.gov/csd/assessments/ozone
•http://www.epa.gov/ozone/science
•http://www.nasa.gov/