Maximum historical depletion over the southern hemisphere (9 September 2000) and over the northern hemisphere (22 March 2011)
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Created 29 Feb 2016
Published 29 Aug 2016
Last modified 08 Mar 2017
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Climate change adaptation
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False-colour view of total ozone over the North (Arctic) and South (Antarctic) poles. The purple and blue colours indicate lowest ozone presence, while yellow and red indicate higher ozone presence. Ozone concentration is commonly measured in Dobson Units. One Dobson Unit is the number of molecules of ozone that would be required to create a layer of pure ozone 0.01 millimetres thick at a temperature of 0 degrees Celsius and a pressure of 1 atmosphere.
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For references, please go to https://www.eea.europa.eu/data-and-maps/figures/maximum-ozone-hole-area-in-3 or scan the QR code.
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