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The latest figures show that Europe has effectively addressed the pollution leading to the ozone hole. The Montreal Protocol is one of the most successful international environmental agreements to date, this example of global action should inspire cooperation on other global environmental problems.
Jacqueline McGlade, EEA Executive Director
In the 1970s and 1980s, scientists established that certain man-made chemicals were depleting the ozone in the earth’s stratosphere. This was subsequently confirmed by the finding of abnormally low ozone concentrations above Antarctica – the so-called ‘ozone hole’.
Stratospheric ozone plays an essential role in limiting the amount of ultraviolet light reaching the surface of the planet, helping prevent skin cancers and other problems such as damage to crops and marine phytoplankton. By signing the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer, part of the Vienna Convention for the protection of the Ozone Layer, governments agreed to reduce the production and consumption of ozone depleting substances (ODS). These two treaties are the only agreements in the history of the United Nations to be universally ratified.
Within the European Union, companies are obliged to report their use of ODS, including imports, exports, consumption and destruction. In total, 189 companies reported activities involving ODS in 2011.
Jacqueline McGlade, EEA Executive Director said: “The latest figures show that Europe has effectively addressed the pollution leading to the ozone hole. The Montreal Protocol is one of the most successful international environmental agreements to date, this example of global action should inspire cooperation on other global environmental problems.”
Many ODS are also potent greenhouse gases, so phasing them out addresses both ozone depletion and climate change. Scientific studies have estimated that the Montreal Protocol reduced GWP-weighted ODS emissions globally by around 10-12 Gt CO2-eq per year by 2010. This is 5-6 times more than the reduction of greenhouse gases expected under the Kyoto Protocol’s first commitment period, which is estimated to be 1-2 Gt CO2-eq on average per year between 2008 and 2012, compared to base year emissions.
More than 200 chemicals are controlled by the Montreal Protocol. These were formerly mainly used as coolants, propellants in spray cans, blowing agents in making foams, solvents and fire extinguishers. The Montreal Protocol covers over 200 individual ODS, including chlorofluorocarbons (CFCs), halons and hydrochlorofluorocarbons (HCFCs).
Image above: Maximum ozone hole in 2011. False-colour view of total ozone over the Antarctic pole. The purple and blue colours represent areas where there is least ozone, and the yellows and reds are where there is more ozone. Measured in 12 September 2011.
For references, please go to https://eea.europa.eu./highlights/europe-using-less-ozone-damaging-chemicals or scan the QR code.
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