Rural concentration map of the ozone indicator AOT40 for crops, year 2009

Figure Created 16 Aug 2012 Published 21 Sep 2012 Last modified 29 Nov 2012
AOT40 for crops are vegatation exposure related indicators and are based on rural background station observation only.



Additional information

  • AOT40 (crops)

(Accumulated dose of ozone Over a Threshold of 40 ppb)
AOT40 means the sum of the differences between hourly concentrations greater than 80 µg/m3 (= 40 parts per billion) and 80 µg/m3

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