Articles | Volume 25, issue 22
https://doi.org/10.5194/acp-25-16747-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-16747-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
25 Nov 2025
Research article |
| 25 Nov 2025
| 25 Nov 2025
Brown carbon emissions from laboratory combustion of Eurasian arctic-boreal and South African savanna biomass
Arya Mukherjee
CORRESPONDING AUTHOR
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Anni Hartikainen
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Markus Somero
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Viljami Luostari
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Mika Ihalainen
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Christopher P. Rüger
Joint Mass Spectrometry Centre, Department of Analytical and Technical Chemistry, University Rostock, Rostock, Germany
Timo Kekäläinen
Department of Chemistry and Sustainable Technology, University of Eastern Finland, Joensuu, Finland
Ville H. Nissinen
Department of Chemistry and Sustainable Technology, University of Eastern Finland, Joensuu, Finland
Luis M. F. Barreira
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Hanna Koponen
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Tuukka Kokkola
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Delun Li
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, 00014, Finland
Lejish Vettikkat
Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
Pasi Yli-Pirilä
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Muhammad Shahzaib
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Meri M. Ruppel
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Ville Vakkari
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, South Africa
Kerneels Jaars
Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, South Africa
Stefan J. Siebert
Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
Angela Buchholz
Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
Kajar Köster
Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
Pieter G. van Zyl
Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, South Africa
Hilkka Timonen
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Niko Kinnunen
Department of Chemistry and Sustainable Technology, University of Eastern Finland, Joensuu, Finland
currently at: School of Engineering Science, Department of Separation Science, LUT University, Lappeenranta, Finland
Janne Jänis
Department of Chemistry and Sustainable Technology, University of Eastern Finland, Joensuu, Finland
Annele Virtanen
Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
Aki Virkkula
Atmospheric composition research unit, Finnish Meteorological Institute, Helsinki, 00101, Finland
Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, 00014, Finland
Olli Sippula
CORRESPONDING AUTHOR
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Department of Chemistry and Sustainable Technology, University of Eastern Finland, Joensuu, Finland
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Short summary
Warming climate is predicted to increase boreal and peatland fires in Northern Eurasia. Limited studies have characterized light absorbing aerosol emissions from these biomasses, thus necessitating this work. Brown carbon (BrC) emitted from laboratory-scale biomass burning had weak light absorptivities based on their complex refractive index values. A combustion temperature dependent light absorptivity continuum existed for emitted BrC. Photochemical aging decreased BrC light absorptivity.
Warming climate is predicted to increase boreal and peatland fires in Northern Eurasia. Limited...
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