UN tracks decline in use of ozone depleters

Review shows 82% cut by 1999 from peak global consumption during 1980s

Global use of ozone-depleting substances (ODS) fell to just 18% of its 1980s peak by 1999, concludes an annual report for UN Montreal protocol, including a 5-10% drop between 1998 and 1999 alone. The study nevertheless warns that remaining consumption must be completely ended to ensure long-term recovery of the world's ozone layer.

According to the research, the largest global ODS emissions source is now developing countries' use of CFCs (50%), followed by HCFC use in industrialised countries (15%), global consumption of methyl bromide (13%) and halons (11%), and industrialised countries' remaining CFC uses (10%).

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