Atmospheric Dry Deposition of Water-Soluble Nitrogen to the Subarctic Western North Pacific Ocean during Summer
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- Atmospheric Dry Deposition of Water-Soluble Nitrogen to the Subarctic Western North Pacific Ocean during Summer
- Other Titles
- 여름철 아북극 북서태평양에서의 대기 중 수용성 질소성분의 건성침착
- Jung, Jinyoung
Chung, Hyun Young
Yang, Eun Jin
- Meteorology & Atmospheric Sciences
- Ammonium; Atmospheric nitrogen deposition; Influence of sea fog on atmospheric nitrogen; Nitrate; Subarctic western North Pacific Ocean; Water-soluble organic nitrogen
- Issue Date
- Jung, Jinyoung, et al. 2019. "Atmospheric Dry Deposition of Water-Soluble Nitrogen to the Subarctic Western North Pacific Ocean during Summer". ATMOSPHERE, 10(7): 351-365.
- To estimate dry deposition flux of atmospheric water-soluble nitrogen (N), including ammonium (NH4+), nitrate (NO3-), and water-soluble organic nitrogen (WSON), aerosol samples were collected over the subarctic western North Pacific Ocean in the summer of 2016 aboard the Korean icebreaker IBR/ V Araon. During the cruise, concentrations of NH4+, NO3-, and WSON in bulk (fine + coarse) aerosols ranged from 0.768 to 25.3, 0.199 to 5.94, and 0.116 to 14.7 nmol m-3, respectively. Contributions of NH4+, NO3-, and WSON to total water-soluble N represented ~74%, ~17%, and ~9%, respectively. Water-soluble N concentrations showed a strong gradient from the East Asian continent to the subarctic western North Pacific Ocean, indicating that water-soluble N species were mainly derived from anthropogenic or terrestrial sources. During sea fog events, coarse mode NO3- was likely to be scavenged more e ciently by fog droplets than fine mode NO3-; besides,WSON was detected only in fine mode, suggesting that there may have been a significant influence of sea fog on WSON, such as the photochemical conversion of WSON into inorganic N. Mean dry deposition flux for water-soluble total N (6.3 9.4 umol m-2 d-1) over the subarctic western North Pacific Ocean was estimated to support a minimum carbon uptake of 42 62 umol C m-2 d-1 by using the Redfield C/N ratio of 6.625.
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