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A comparison of two different approaches for mapping potential ozone damage to vegetation. A model study.

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JournalEnvironmental Pollution
DatePublished - Apr 2007
Issue number3
Volume146
Number of pages10
Pages (from-to)715-725
Original languageEnglish

Abstract

Two very different types of approaches are currently in use today for indicating risk of ozone damage to vegetation in Europe. One approach is the so-called AOTX (accumulated exposure over threshold of X ppb) index, which is based upon ozone concentrations only. The second type of approach entails an estimate of the amount of ozone entering via the stomates of vegetation, the AFstY approach (accumulated stomatal flux over threshold of Y nmol m-2 s-1). The EMEP chemical transport model is used to map these different indicators of ozone damage across Europe, for two illustrative vegetation types, wheat and beech forests. The results show that exceedences of critical levels for either type of indicator are widespread, but that the indicators give very different spatial patterns across Europe. Model simulations for year 2020 scenarios suggest reductions in risks of vegetation damage whichever indicator is used, but suggest that AOT40 is much more sensitive to emission control than AFstY values.

    Research areas

  • ozone, mapping, vegetation damage, AOT, stomatal flux, DEPOSITION MODULE, TROPOSPHERIC OZONE, CONTROL STRATEGIES, EXPOSURE INDEXES, AIR-POLLUTION, EUROPE, EMISSIONS, AOT40, FLUX, TRANSPORT

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