Articles | Volume 15, issue 23
Research article
 | Highlight paper
10 Dec 2015
Research article | Highlight paper |  | 10 Dec 2015

Updated ozone absorption cross section will reduce air quality compliance

E. D. Sofen, M. J. Evans, and A. C. Lewis


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Latest update: 18 Jun 2024
Short summary
As an air pollutant, O3 is monitored photometrically to assess compliance with air quality legislation. A recent study found a 1.8% reduction in its absorption cross section, which would lead to an equivalent increase in observed O3 concentrations. We estimate this would increase the number of sites out of compliance with air quality regulations in the EU and US by 20%. We draw attention to how small changes in gas metrology impacts attainment and compliance with legal air quality standards.
Final-revised paper