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Fiore, A.M. [Author]; Dentener, F.J. [Author]; MacKenzie, I.A. [Author]; Sanderson, M.G. [Author]; Shindell, D.T. [Author]; Stevenson, D.S. [Author]; Szopa, S. [Author]; Van Dingenen, R. [Author]; Zeng, G. [Author]; Atherton, C. [Author]; Bergmann, D. [Author]; Bey, I. [Author]; Wild, O. [Author]; Carmichael, G. [Author]; Collins, W. J. [Author]; Duncan, B. N. [Author]; Faluvegi, G. [Author]; Folberth, G. [Author]; Gauss, M. [Author]; Gong, S. [Author]; Hauglustaine, D. [Author]; Holloway, T. [Author]; Isaksen, I.S.A. [Author]; Cuvelier, C. [Author]; [...]

Multimodel estimates of intercontinental source-receptor relationships for ozone pollution

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  • Media type: E-Article
  • Title: Multimodel estimates of intercontinental source-receptor relationships for ozone pollution
  • Contributor: Fiore, A.M. [Author]; Dentener, F.J. [Author]; MacKenzie, I.A. [Author]; Sanderson, M.G. [Author]; Shindell, D.T. [Author]; Stevenson, D.S. [Author]; Szopa, S. [Author]; Van Dingenen, R. [Author]; Zeng, G. [Author]; Atherton, C. [Author]; Bergmann, D. [Author]; Bey, I. [Author]; Wild, O. [Author]; Carmichael, G. [Author]; Collins, W. J. [Author]; Duncan, B. N. [Author]; Faluvegi, G. [Author]; Folberth, G. [Author]; Gauss, M. [Author]; Gong, S. [Author]; Hauglustaine, D. [Author]; Holloway, T. [Author]; Isaksen, I.S.A. [Author]; Cuvelier, C. [Author]; [...]
  • Published: Union, 2009
  • Published in: Journal of Geophysical Research 114, 1 - 24 (2009). doi:10.1029/2008JD010816
  • Language: English
  • DOI: https://doi.org/10.1029/2008JD010816
  • ISSN: 0141-8637; 0148-0227
  • Keywords:
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Understanding the surface O-3 response over a "receptor" region to emission changes over a foreign "source" region is key to evaluating the potential gains from an international approach to abate ozone (O-3) pollution. We apply an ensemble of 21 global and hemispheric chemical transport models to estimate the spatial average surface O-3 response over east Asia (EA), Europe (EU), North America (NA), and south Asia (SA) to 20% decreases in anthropogenic emissions of the O-3 precursors, NOx, NMVOC, and CO (individually and combined), from each of these regions. We find that the ensemble mean surface O-3 concentrations in the base case (year 2001) simulation matches available observations throughout the year over EU but overestimates them by > 10 ppb during summer and early fall over the eastern United States and Japan. The sum of the O-3 responses to NOx, CO, and NMVOC decreases separately is approximately equal to that from a simultaneous reduction of all precursors. We define a continental-scale "import sensitivity" as the ratio of the O-3 response to the 20% reductions in foreign versus "domestic" (i.e., over the source region itself) emissions. For example, the combined reduction of emissions from the three foreign regions produces an ensemble spatial mean decrease of 0.6 ppb over EU (0.4 ppb from NA), less than the 0.8 ppb from the reduction of EU emissions, leading to an import sensitivity ratio of 0.7. The ensemble mean surface O-3 response to foreign emissions is largest in spring and late fall (0.7-0.9 ppb decrease in all regions from the combined precursor reductions in the three foreign regions), with import sensitivities ranging from 0.5 to 1.1 (responses to domestic emission reductions are 0.8-1.6 ppb). High O-3 values are much more sensitive to domestic emissions than to foreign emissions, as indicated by lower import sensitivities of 0.2 to 0.3 during July in EA, EU, and NA when O-3 levels are typically highest and by the weaker relative response of annual incidences of daily maximum 8-h average ...
  • Access State: Open Access