Hygroscopicity of urban aerosols and its link to size-resolved chemical composition during spring and summer in Seoul, Korea

Kim, Najin; Yum, Seong Soo; Park, Minsu; Park, Jong Sung; Shin, Hye Jung; Ahn, Joon Young

doi:https://doi.org/10.5194/acp-20-11245-2020

Articles | Volume 20, issue 19

https://doi.org/10.5194/acp-20-11245-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-11245-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 19

Research article

|

02 Oct 2020

Research article |

| 02 Oct 2020

Hygroscopicity of urban aerosols and its link to size-resolved chemical composition during spring and summer in Seoul, Korea

Najin Kim, Seong Soo Yum, Minsu Park, Jong Sung Park, Hye Jung Shin, and Joon Young Ahn

Supplement

https://doi.org/10.5194/acp-20-11245-2020-supplement

Data sets

KORUS-AQ data A. Aknan and G. Chen https://doi.org/10.5067/Suborbital/KORUSAQ/DATA01

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Short summary

Chemical effects on the size-resolved hygroscopicity of urban aerosols were examined based on the KORUS-AQ field campaign data (HTDMA and HR-ToF-AMS). The size-resolved chemical composition data were found to be critical in explaining the size-dependent hygroscopicity, as well as the diurnal variation of κ for small particles. Aerosol mixing state information was associated with the size-resolved chemical composition data to reveal chemical information of different hygroscopicity modes.