TY - JOUR
T1 - Atmospheric deposition of anthropogenic inorganic nitrogen in airborne particles and precipitation in the East Sea in the northwestern Pacific Ocean
AU - Park, Geun Ha
AU - Lee, Seon Eun
AU - Kim, Young il
AU - Kim, Dongseon
AU - Lee, Kitack
AU - Kang, Jeongwon
AU - Kim, Yeo Hun
AU - Kim, Haryun
AU - Park, Seunghee
AU - Kim, Tae Wook
N1 - Funding Information:
This work was supported by Basic Science Research Program ( 2012R1A6A3A04038883 / 2017R1C1B2009189 ) funded by the National Research Foundation of Korea , and PE99712 project funded by the Korea Institute of Ocean Science and Technology .
Funding Information:
This work was supported by Basic Science Research Program (2012R1A6A3A04038883/2017R1C1B2009189) funded by the National Research Foundation of Korea, and PE99712 project funded by the Korea Institute of Ocean Science and Technology.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - The atmospheric deposition of anthropogenic nitrogen is an increasingly important new source of nitrogen to the ocean. Coastal areas east of the Korean Peninsula are suitable for the investigation of the effects of atmospheric anthropogenic nitrogen on the ocean nutrient system because of the low riverine discharge rates and the prevailing influence of the East Asian outflow. Thus, we measured the concentrations of nitrate (NO3 −) and ammonium (NH4 +) in airborne particles and in precipitation from March 2014 to February 2016 at a coastal site (37.08°N, 129.41°E) on the east coast of Korea. The dry deposition of NO3 − (27–30 mmol N m−2 yr−1) was far greater than that of NH4 + (6–8 mmol N m−2 yr−1). The greater rate of dry NO3 − deposition was associated with air masses traveling over northeastern China and central Korea. In contrast, the rates of wet deposition of NO3 − (17–24 mmol N m−2 yr−1) and NH4 + (14–27 mmol N m−2 yr−1) were comparable and were probably associated with in-cloud scavenging of these ions. The results indicate that the total deposition of NO3 − and NH4 + combined could contribute to ~2.4% and ~1.9% of the primary production in the coastal areas east of the Korean Peninsula and in the East Asian marginal seas, respectively, which would be a lower bound because the dry deposition of reactive nitrogen gas was not included. Our study shows that the atmospheric input of anthropogenic NO3 − and NH4 + may substantially increase phytoplankton biomass in the coastal waters of the East Sea near the Korean Peninsula.
AB - The atmospheric deposition of anthropogenic nitrogen is an increasingly important new source of nitrogen to the ocean. Coastal areas east of the Korean Peninsula are suitable for the investigation of the effects of atmospheric anthropogenic nitrogen on the ocean nutrient system because of the low riverine discharge rates and the prevailing influence of the East Asian outflow. Thus, we measured the concentrations of nitrate (NO3 −) and ammonium (NH4 +) in airborne particles and in precipitation from March 2014 to February 2016 at a coastal site (37.08°N, 129.41°E) on the east coast of Korea. The dry deposition of NO3 − (27–30 mmol N m−2 yr−1) was far greater than that of NH4 + (6–8 mmol N m−2 yr−1). The greater rate of dry NO3 − deposition was associated with air masses traveling over northeastern China and central Korea. In contrast, the rates of wet deposition of NO3 − (17–24 mmol N m−2 yr−1) and NH4 + (14–27 mmol N m−2 yr−1) were comparable and were probably associated with in-cloud scavenging of these ions. The results indicate that the total deposition of NO3 − and NH4 + combined could contribute to ~2.4% and ~1.9% of the primary production in the coastal areas east of the Korean Peninsula and in the East Asian marginal seas, respectively, which would be a lower bound because the dry deposition of reactive nitrogen gas was not included. Our study shows that the atmospheric input of anthropogenic NO3 − and NH4 + may substantially increase phytoplankton biomass in the coastal waters of the East Sea near the Korean Peninsula.
KW - Air-mass backward trajectory analysis
KW - Marine productivity
KW - Ocean nitrogen biogeochemistry
KW - Transboundary pollution
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U2 - 10.1016/j.scitotenv.2019.05.135
DO - 10.1016/j.scitotenv.2019.05.135
M3 - Article
C2 - 31108360
AN - SCOPUS:85065705288
VL - 681
SP - 400
EP - 412
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -