Articles | Volume 24, issue 2
https://doi.org/10.5194/acp-24-853-2024
© Author(s) 2024. 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-24-853-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Physicochemical and temporal characteristics of individual atmospheric aerosol particles in urban Seoul during KORUS-AQ campaign: insights from single-particle analysis
Hanjin Yoo
Department of Chemistry, Inha University, Incheon, 22212, Republic of Korea
Particle Pollution Management Center, Inha University, Incheon, 21999, Republic of Korea
School of Earth Science System, Tianjin University, Tianjin, China
Hong Geng
CORRESPONDING AUTHOR
Institute of Environmental Science, Shanxi University, Taiyuan, China
Chul-Un Ro
CORRESPONDING AUTHOR
Department of Chemistry, Inha University, Incheon, 22212, Republic of Korea
Particle Pollution Management Center, Inha University, Incheon, 21999, Republic of Korea
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Hygroscopicity of ambient marine aerosols is of critical relevance to investigate their atmospheric impacts, which, however, remain uncertain due to their complex compositions and mixing states. Therefore, a study on the hygroscopic behavior of ambient marine aerosols for understanding the phase states when interacting with water vapor at different RH levels and their subsequent impacts on the heterogeneous chemical reactions, atmospheric environment, and human health is of vital importance.
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Remotely sensed NO2 and surface NOx are combined with a mathematical method to estimate daily NOx emissions. The results identify new sources and improve existing estimates. The estimation is driven by three flexible factors: thermodynamics of combustion, chemical loss, and atmospheric transport. The thermodynamic term separates power, iron, and cement from coking, boilers, and aluminum. This work finds three causes for the extremes: emissions, UV radiation, and transport.
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Short summary
We conducted an investigation of atmospheric aerosols collected in Seoul, South Korea, during the KORUS-AQ campaign on a single-particle basis. We were able to identify their sources, the atmospheric fate, and the impacts of local emissions and long-range transport on aerosol composition. Additionally, we traced potential sources of non-exhaust heavy-metal particles. This comprehensive analysis provides valuable insights into the complex dynamics of urban aerosols.
We conducted an investigation of atmospheric aerosols collected in Seoul, South Korea, during...
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