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When river water meets seawater: Insights into primary marine aerosol production

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When river water meets seawater: Insights into primary marine aerosol production
Other Titles
강물과 바닷물이 만났을 때: 일차 해양 생성 에어로졸 생성 관점
Park, Jiyeon
Jang, Jiyi
Yoon, Young Jun
Kang, Sujin
Kang, Hyo Jin
Park, Kihong
Cho, Kyung Hwa
Kim, Jung-Hyun
Dall'Osto, Manuel
Lee, Bang Yong
Environmental Sciences & Ecology
Primary marine aerosolChamber studyInorganic saltsOrganic matterRiver-dominated coastal systems
Issue Date
Park, Jiyeon, et al. 2022. "When river water meets seawater: Insights into primary marine aerosol production". SCIENCE OF THE TOTAL ENVIRONMENT, 807(2): 1-9.
The impact of inorganic salts and organic matter (OM) on the production of primary marine aerosols is still under debate. To constrain their impact, we investigated primary aerosols generated by a sea-spray generator chamber using surface water samples from rivers, estuaries, and seas that were collected along salinity gradients in two temperate Korean coastal systems and one Arctic coastal system. Salinity values showed an increasing trend along the river-estuary-coastal water transition, indicating the lowest amount of inorganic salts in the river but the highest amount in the sea. In river samples, the lowest number concentration of primary aerosol particles (1.01 x 10(3) cm(-3)) was observed at the highest OM content, suggesting that low salinity controls aerosol production. Moreover, the number concentration of primary aerosols increased drastically in estuarine (1.13 x 10(4) cm(-3)) and seawater (1.35 x 10(4) cm(-3)) samples as the OM content decreased. Our results indicate that inorganic salts associated with increasing salinity play a much larger role than OM in aerosol production in river-dominated coastal systems. Laboratory studies using NaCl solution supported the conclusion that inorganic salt is a critical factor in modulating the particles produced from river water and seawater. Accordingly, this study highlights that inorganic salts are a critical factor in modulating the production of primary marine aerosols.
Appears in Collections  
2019-2019, Organic carbon transfer across the river-sea interface: a case study in Geum and Sumjin river systems (19-19) / Kim, Junghyun (PN19100)
2021-2021, Interrelationship Investigation and Comprehensive Monitoring based on Permafrost-Atmospheric Environment (21-21) / Lee, Bang Yong (PN21011)
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