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  • Fleming, Zoe L.University Of Leicester (author)

Tropospheric Ozone Assessment Report: Present-day ozone distribution and trends relevant to human health

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018-02-05
  • University of California Press,2018
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:dab1b2ae-fd8d-4dc6-b032-eff13414fc4b
  • https://research.chalmers.se/publication/500935URI
  • https://doi.org/10.1525/elementa.302DOI
  • https://research.chalmers.se/publication/504069URI
  • https://doi.org/10.1525/elementa.273DOI
  • https://research.chalmers.se/publication/508529URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • This study quantifies the present-day global and regional distributions (2010-2014) and trends (2000-2014) for five ozone metrics relevant for short-term and long-term human exposure. These metrics, calculated by the Tropospheric Ozone Assessment Report, are: 4th highest daily maximum 8-hour ozone (4MDA8); number of days with MDA8 > 70 ppb (NDGT70), SOMO35 (annual Sum of Ozone Means Over 35 ppb) and two seasonally averaged metrics (3MMDA1; AVGMDA8). These metrics were explored at ozone monitoring sites worldwide, which were classified as urban or non-urban based on population and nighttime lights data. Present-day distributions of 4MDA8 and NDGT70, determined predominantly by peak values, are similar with highest levels in western North America, southern Europe and East Asia. For the other three metrics, distributions are similar with North-South gradients more prominent across Europe and Japan. Between 2000 and 2014, significant negative trends in 4MDA8 and NDGT70 occur at most US and some European sites. In contrast, significant positive trends are found at many sites in South Korea and Hong Kong, with mixed trends across Japan. The other three metrics have similar, negative trends for many non-urban North American and some European and Japanese sites, and positive trends across much of East Asia. Globally, metrics at many sites exhibit non-significant trends. At 59% of all sites there is a common direction and significance in the trend across all five metrics, whilst 4MDA8 and NDGT70 have a common trend at similar to 80% of all sites. Sensitivity analysis shows AVGMDA8 trends differ with averaging period (warm season or annual). Trends are unchanged at many sites when a 1995-2014 period is used; although fewer sites exhibit non-significant trends. Over the longer period 1970-2014, most Japanese sites exhibit positive 4MDA8/SOMO35 trends. Insufficient data exist to characterize ozone trends for the rest of Asia and other world regions.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Doherty, Ruth M.University of Edinburgh (author)
  • von Schneidemesser, Erika (author)
  • Malley, Christopher S.Natural Environment Research Council (NERC),University of Edinburgh,University of York (author)
  • Cooper, Owen R.University of Colorado at Boulder,NOAA Earth System Research Laboratory (author)
  • Pinto, Joseph P.The University of North Carolina at Chapel Hill (author)
  • Colette, AugustinInstitut National de l'Environnement Industriel et des Risques (INERIS) (author)
  • Xu, XiaobinMeteorologisk institutt,Norwegian Meteorological Institute,Chinese Academy of Meteorological Sciences (CAMS) (author)
  • Schultz, Martin G.Forschungszentrum Jülich GmbH (author)
  • Lefohn, Allen S. (author)
  • Hamad, SameraUniversity of Maryland (author)
  • Moolla, RaeesaUniversity of Witwatersrand (author)
  • Solberg, SverreNorsk institutt for luftforskning (NILU),Norwegian Institute for Air Research (NILU) (author)
  • Feng, ZhaozhongChinese Academy of Sciences (author)
  • Simpson, David,1961Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)simpson (author)
  • University Of LeicesterUniversity of Edinburgh (creator_code:org_t)

Related titles

  • In:Elementa: University of California Press62325-1026

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