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Ozone depleting substances in the stratosphere, 1950-2100
Source: RIVM, preliminary data from the WMO 1998 ozone assessment.
Note: The curve shows the projected mixing ratio (frequency of occurrence) of so-called equivalent effective chlorine. It is based on the Protocol scenario in the 1998 WMO/UNEP ozone assessment, which assumes maximum allowed emissions within protocols.
For references, please go to https://eea.europa.eu./publications/92-9167-087-1/page005.html or scan the QR code.
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