The Vienna Convention for the Protection of the Ozone Layer and its Montreal Protocol on Substances that Deplete the Ozone Layer are dedicated to the protection of the earths ozone layer. With 197 parties, they are the most widely ratified treaties in United Nations history, and have, to date, enabled reductions of over 97% of all global consumption of controlled ozone depleting substances (measured in ODP tonnes).

Topics: 
ozone depleting potential, ozone layer depletion, sustainable use, sound environmental management, cleaner production
Entry into force: 
22 Sep 1988
Region: 
Global
Source of information: Vienna Convention website .
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