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Data Set #012

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About the Data

Notes about data:
These data are from the United Nations Environmental Program (UNEP) Report: "Production and Consumption of Ozone Depleting Substances  1986 - 1998" which can be found at  http://www.unep.org/ozone/.

Information from the US EPA website:  http://www.epa.gov/ozone/
Chlorofluorocarbon (CFC): a compound consisting of chlorine, fluorine, and carbon. CFCs are very stable in the troposphere. They are broken down by strong ultraviolet light in the stratosphere and release chlorine atoms that then deplete the ozone layer. CFCs are commonly used as refrigerants, solvents, and foam blowing agents. The most common CFCs are CFC-11, CFC-12, CFC-113, CFC-114, and CFC-11, which constitute Group I . The ozone depletion potential (ODP) for each CFC is, respectively, 1, 1, 0.8, 1, and 0.6.

     
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Production of CFCs in the US

year

ODP tons (Metric Tons x Ozone Depletion Potential)

1986

311,021

1989

320,436

1990

199,697

1991

172,164

1992

152,730

1993

127,712

1994

78,208

1995

34,728

1996

676

1997

739

1998

243

 

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