Why should we calculate complex indices of ozone exposure? Results from Mediterranean background sites

Elena Paoletti, Alessandra De Marco, Stefania Racalbuto

Research output: Contribution to journalArticle

53 Citations (Scopus)


While moving towards a flux-based approach, exposure-based ozone metrics are still a practical measure for summarising ambient air quality. Ozone hourly concentrations for the period 2000-2004 from sites in the Mediterranean Italy (≤600 m a.s.l.) were examined to define the O3summary statistic in the area, and to determine how O3exposure indices correlate to each other. Thirty-four of the most common O3exposure metrics were calculated. The results show that background O3pollution in Italy exceeds the European and North American standards. The exceedances of the target value, information and alert thresholds set by the 2002/3/CE Directive should encourage Italy to take the appropriate measures to reduce the risk. All the O3exposure indices, except the maximum permissible ozone concentration (MPOC) for forests, point to the potential for negative effects on vegetation and human health across Italy. As indices evaluated significantly correlated with each other, we suggest use of the most biologically meaningful metric when summarizing air quality information. © Springer Science+Business Media B.V. 2006.
Original languageEnglish
Pages (from-to)19 - 30
Number of pages12
JournalEnvironmental Monitoring and Assessment
Issue number1-3
Publication statusPublished - May 2007
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Pollution
  • Management, Monitoring, Policy and Law

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