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Sources of particulate matter, with a focus on local emissions from domestic heating, were analyzed using the COSMO-MUSCAT chemical transport model. The results were compared with wintertime measurements from sites in Germany and the Czech Republic, where wood and coal are commonly used for heating. A non-reactive tagging method identified domestic combustion as a major source of primary organic matter (OM). However, the model underestimates total OM due to the insufficient representation of secondary organic aerosol (SOA) formed from anthropogenic volatile organic compounds (AVOCs) emitted by wood and coal combustion. Sensitivity tests adjusting SOA yields and AVOC emissions revealed an average increase in OM concentrations of over 40% at the measurement sites, highlighting the critical role of AVOC precursors in SOA formation.

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Understanding the Influence of Domestic Heating on Winter Secondary Organic Aerosols: Insights from COSMO-MUSCAT Modelling and Observations in Central Europe

  • 会议论文

  • 发表日期：

    2026年

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  • Hanna Wiedenhaus,
  • Roland Schrödner,
  • Ralf Wolke,
  • Ina Tegen

摘要

Sources of particulate matter, with a focus on local emissions from domestic heating, were analyzed using the COSMO-MUSCAT chemical transport model. The results were compared with wintertime measurements from sites in Germany and the Czech Republic, where wood and coal are commonly used for heating. A non-reactive tagging method identified domestic combustion as a major source of primary organic matter (OM). However, the model underestimates total OM due to the insufficient representation of secondary organic aerosol (SOA) formed from anthropogenic volatile organic compounds (AVOCs) emitted by wood and coal combustion. Sensitivity tests adjusting SOA yields and AVOC emissions revealed an average increase in OM concentrations of over 40% at the measurement sites, highlighting the critical role of AVOC precursors in SOA formation.