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The atmospheric concentration of 7 carcinogenic polycyclic aromatic hydrocarbons (PAHs) is modelled by the Danish Eulerian Hemispheric Model (DEHM) for 42 years from 1979 to 2020. As common by-products of combustion processes, PAHs have been widely measured by different international monitoring systems. Our purpose is to compare modelled data and measured records from world-wide long-term monitoring sites to evaluate the accuracy of DEHM in simulating atmospheric concentrations of the 7 carcinogenic PAHs and lay the foundation for studying PAHs’ large-scale environmental fate. The results show that DEHM can achieve satisfactory accuracy in simulating atmospheric concentrations of these PAHs in the Northern Hemisphere.

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Evaluation of Atmospheric Concentrations of 7 Polycyclic Aromatic Hydrocarbons Modelled Using the Danish Eulerian Hemispheric Model

  • 会议论文

  • 发表日期：

    2026年

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  • Pu-Fei Yang,
  • Jesper H. Christensen,
  • Yi-Fan Li,
  • Kaj M. Hansen

摘要

The atmospheric concentration of 7 carcinogenic polycyclic aromatic hydrocarbons (PAHs) is modelled by the Danish Eulerian Hemispheric Model (DEHM) for 42 years from 1979 to 2020. As common by-products of combustion processes, PAHs have been widely measured by different international monitoring systems. Our purpose is to compare modelled data and measured records from world-wide long-term monitoring sites to evaluate the accuracy of DEHM in simulating atmospheric concentrations of the 7 carcinogenic PAHs and lay the foundation for studying PAHs’ large-scale environmental fate. The results show that DEHM can achieve satisfactory accuracy in simulating atmospheric concentrations of these PAHs in the Northern Hemisphere.