ESA - Observing the Earth - Understanding Our Planet - 2007 ozone hole ‘smaller than usual’

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2007 ozone hole ‘smaller than usual’

3 October 2007

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Ozone hole comparison over Antarctica measured in 2006 and 2007 by Envisat. The ozone loss in 2007 peaked at 27.7 million tonnes, compared to the 2006 record ozone loss of 40 million tonnes.

Credits: KNMI - ESA

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Time series of the average ozone loss in the period 21-30 September 2007.

Credits: KNMI - ESA

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Ozone hole monitoring in terms of ozone loss over the last 10 years.

Credits: KNMI - ESA

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The thinning of the ozone is caused by the presence of ozone destructing gases in the atmosphere such as chlorine and bromine, originating from man-made products like chlorofluorocarbons (CFCs), which have still not vanished from the air.

Credits: ESA

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Envisat artist's impression

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