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Figure Ozone - Target value for the protection of vegetation
In the air quality directive (2008/EC/50), the EU has set a target value and a long term objective value for ozone (O3) for the protection of vegetation. Target value: the AOT40 may not exceed 18000 (µg/m3) per hour in the period from 1 May to 31 July averaged over five years. Long term objective value: the AOT40 may not exceed 6000 (µg/m3) per hour in the period from 1 May to 31 July within a calendar year. AOT40 (expressed in (μg/m3) ∙ hours) means the sum of the difference between hourly concentrations greater than 80 μg/m3 (= 40 parts per billion) and 80 μg/m3 over a given period using only the one-hour values measured between 8.00 and 20.00 Central European Time (CET) each day. More information is provided in Annex VII of directive (2008/EC/50).
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Figure Ozone 26th highest maximum 8-hour daily value, 2005
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Figure Ozone 26th highest maximum 8-hour daily value, 2006
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Figure Ozone 26th highest maximum 8-hour daily value, 2007
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Figure Ozone 26th highest maximum 8-hour daily value, 2008
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Figure Ozone 26th highest maximum 8-hour daily value, 2009
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Figure Ozone 26th highest maximum 8-hour daily value, 2010
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Figure Ozone 26th highest maximum 8-hour daily value - TV Exceedance, 2010
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Figure Ozone 26th highest maximum daily 8-hour average 2004
Combined rural and urban concentration map of the 26th highest daily maximum 8-hour ozone average, 2004.
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Figure Ozone 2010 - 8 hour mean target value for the protection of human health
In the air quality directive (2008/EC/50), the EU has set a target value and a long term objective value for ozone (O3) for the protection of human health. Target value: the maximum daily eight-hour mean may not exceed 120 micrograms per cubic metre (µg/m3) on more than 25 days per calendar year averaged over three years. Long term objective value: the maximum daily eight-hour mean may not exceed 120 micrograms per cubic metre (µg/m3) within a calendar year.
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European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100