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Radium Tracing Cross-Shelf Fluxes of Nutrients in the Northwest Pacific Ocean

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Title
Radium Tracing Cross-Shelf Fluxes of Nutrients in the Northwest Pacific Ocean
Author(s)
Cho H.-M.; Kim G.; Eun Young Kwon; Han Y.
Publication Date
2019-10
Journal
GEOPHYSICAL RESEARCH LETTERS, v.46, no.20, pp.11321 - 11328
Publisher
AMER GEOPHYSICAL UNION
Abstract
©2019. The Authors.Nutrients in surface waters of the northwest Pacific Ocean are known to be influenced significantly by anthropogenic inputs via the atmosphere. In this study, we evaluated the relative contribution of cross-shelf fluxes in the northwest Pacific Ocean. The shelf fluxes were estimated by multiplying the 228Ra flux based on inverse modeling by the measured ratios of nutrients to 228Ra. The ratios were obtained from field observations of nutrients and 228Ra in the Yellow Sea and the East China Sea in February 2017 when the water column was fully mixed vertically. The cross-shelf fluxes are estimated to be approximately 40% of the atmospheric depositional flux of nitrogen and 2 orders of magnitude greater than that of phosphorus. These results suggest that the cross-shelf fluxes of nutrients are an important, yet previously underappreciated, pathway of nutrients to the North Pacific Ocean, controlling carbon sequestration and biological production
URI
https://pr.ibs.re.kr/handle/8788114/6866
ISSN
0094-8276
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > Journal Papers (저널 논문)
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