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Water, Air, and Soil Pollution

, Volume 85, Issue 4, pp 2021–2026 | Cite as

Concentration and deposition of acidifying air pollutants over Sweden: Estimates for 1991 based on the match model and observations

  • J. Langner
  • C. Persson
  • L. Robertson
Part II Atmospheric Processes and Air Pollution Climate

Abstract

The MATCH (Mesoscale Atmospheric Transport and CHemistry) model has been developed as a tool for air pollution assessment studies on different geographical scales. MATCH is an Eulerian atmospheric dispersion model, including physical and chemical processes governing sources, atmospheric transport and sinks of oxidized sulfur and oxidized and reduced nitrogen. Using a combination of air and precipitation chemistry measurements and the MATCH model, the national and long-range transport contributions to air pollution and deposition can be quantified in the model region. The calculations for the year 1991 show that the Swedish import was about 4.5 times larger than the export for sulfur and about six times larger for reduced nitrogen, while the Swedish import of oxidized nitrogen only exceeded the export by 10%. Using the MATCH system we estimate the long-range transport in an independent way compared to EMEP. Comparison between the EMEP and MATCH calculations for 1991 show that the total deposition of oxidized nitrogen over Sweden is similar, while the EMEP-values for total deposition of oxidized sulfur and reduced nitrogen are 25% respectively 40% smaller than what is obtained from MATCH.

Keywords

Dispersion Model Chemistry Measurement Atmospheric Transport Match Model Total Deposition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • J. Langner
    • 1
  • C. Persson
    • 1
  • L. Robertson
    • 1
  1. 1.Swedish Meteorological and Hydrological Institute (SMHI)NorrköpingSweden

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