Articles | Volume 17, issue 1
Research article 10 Feb 2021
Research article | 10 Feb 2021
High-resolution distributions of O2 / Ar on the northern slope of the South China Sea and estimates of net community production
Chuan Qin et al.
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Paul J. Tréguer, Jill N. Sutton, Mark Brzezinski, Matthew A. Charette, Timothy Devries, Stephanie Dutkiewicz, Claudia Ehlert, Jon Hawkings, Aude Leynaert, Su Mei Liu, Natalia Llopis Monferrer, María López-Acosta, Manuel Maldonado, Shaily Rahman, Lihua Ran, and Olivier Rouxel
Biogeosciences, 18, 1269–1289,Short summary
Silicon is the second most abundant element of the Earth's crust. In this review, we show that silicon inputs and outputs, to and from the world ocean, are 57 % and 37 % higher, respectively, than previous estimates. These changes are significant, modifying factors such as the geochemical residence time of silicon, which is now about 8000 years and 2 times faster than previously assumed. We also update the total biogenic silica pelagic production and provide an estimate for sponge production.
Ke Zhang, Lijun Han, Sumei Liu, and Lingyan Wang
Atmos. Chem. Phys. Discuss.,
Preprint withdrawnShort summary
We did high time-resolution nutrient dissolution experiments used aerosols collected on atmospheric mass transport path over the East Asian to West Pacific at Qianliyan island. We obtained the rapid dissolution of inorganic N species and slow dissolution of inorganic P and Si, depicted nutrient dissolution curves by math Equations and explained dissolution patterns by linkages with aerosol inorganic components and their dissolution properties.
M.-S. Sun, G.-L. Zhang, X.-P. Cao, X.-Y. Mao, J. Li, and W.-W. Ye
Revised manuscript not acceptedShort summary
Obvious seasonal variations of the distribution and emission of methane in the ECS and YS were reported based on data collected during five cruises in 2011. A box model was used to calculate the methane budget in the ECS, identify the main sources and sinks of dissolved methane in this area, and estimate the contribution of different sources to total methane quantitatively. It indicated that the most important source of methane in the ECS was in situ production in the water column.
R. H. Li, S. M. Liu, Y. W. Li, G. L. Zhang, J. L. Ren, and J. Zhang
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G. D. Song, S. M. Liu, H. Marchant, M. M. M. Kuypers, and G. Lavik
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We conducted an underway measurement of dissolved O2 / Ar using membrane inlet mass spectrometry and estimated net community production (NCP) in the South China Sea (SCS) in both summer and autumn. We found that nutrient content, especially nitrogen, is the dominant factor affecting primary production in the SCS. In the summer, we observed a rapid response of the ecosystem to episodic nutrient supply induced by eddies. This is the first report on NCP estimation based on O2 / Ar data in the SCS.
We conducted an underway measurement of dissolved O2 / Ar using membrane inlet mass spectrometry...