This is done by calculating, first of all, a scenario for a fixed quantity of emissions of a CFC reference (CFC 11). This results in an equilibrium state of total ozone reduction. The same scenario is considered for each substance under study whereby CFC 11 is replaced by the quantity of the substance. This leads to the ozone depletion potential for each respective substance, which is given in CFC 11 equivalents. An evaluation of the ozone depletion potential should take into consideration the long term, global and partly irreversible effects.
PE International
UV - radiation
Stratosphere 15 - 50 km
Absorption
Absorption
CFCs Nitrogen oxide
Figure A 5:
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Ozone Depletion Potential
July 2012