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T1 Environmental Assessment of Ozone Layer Depletion and its Impact as of April 1984: Bulletin No.9  January 1985
A1 United Nations Environment Programme, 
K1 ozone layer
K1 ozone-depleting substance
K1 environmental impact assessment
K1 chlorofluorocarbon
K1 chemical
K1 environmental protection
YR 1985
FD 1985-01
LK https://wedocs.unep.org/handle/20.500.11822/29031
UL https://wedocs.unep.org/handle/20.500.11822/29031
NO Bulletin No. 9 shows an important change from previous issues. Its new title, "Envirorxnental Assessment of ozone layer modification and its impact", reflects the uncertainty that exists with respect to future budgets of trace gases with the potential to modify the ozone layer. Aitnough the chemistry and physics of the atmospheric processes which control ozone are now better understood than ever before, the ability to predict accurately future atmospheric concentrations of chlorine species, carbon dioxide, methane, nitrous oxide and other oxides of nitrogen has not yet been achieved.
DS UN Environment Document Repository
RD Sep 16, 2026