Nitrate anomaly in the upper nutricline in the northern South China Sea - Evidence for nitrogen fixation

G. T.F. Wong, Shi Wei Chung, Fuh Kwo Shiah, Chung-Chi Chen, Liang Saw Wen, Kon Kee Liu

Research output: Contribution to journalArticle

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Abstract

Up to 2 μM of nitrate anomaly, N*, were found in the upper nutricline at the South East Asia Time-series Study (SEATS) site in the northern South China Sea (SCS). These concentrations were among the higher values reported in the Pacific and indicate the significant contribution of the remineralization of nitrogen-rich organic matter formed by nitrogen fixation to the nutrient dynamics of the area. The concentrations were systematically higher, by up to 2.5 μM, in the Fall through the early Spring, during the northeast monsoon, than in the Summer, suggesting that the impact of nitrogen fixation was higher during the former time period. This pattern is in phase with that of the atmospheric deposition of Asian dust to the northern SCS. The coherence is consistent with a coupling between nitrogen fixation and the availability of atmospherically derived iron.

Original languageEnglish
Pages (from-to)12-11
Number of pages2
JournalGeophysical Research Letters
Volume29
Issue number23
Publication statusPublished - 2002 Dec 1

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nitrogenation
nitrogen fixation
nitrates
China
anomalies
nitrate
anomaly
remineralization
monsoons
nutrient dynamics
nutrients
atmospheric deposition
summer
availability
monsoon
dust
time series
iron
nitrogen
organic matter

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Wong, G. T. F., Chung, S. W., Shiah, F. K., Chen, C-C., Wen, L. S., & Liu, K. K. (2002). Nitrate anomaly in the upper nutricline in the northern South China Sea - Evidence for nitrogen fixation. Geophysical Research Letters, 29(23), 12-11.

Nitrate anomaly in the upper nutricline in the northern South China Sea - Evidence for nitrogen fixation. / Wong, G. T.F.; Chung, Shi Wei; Shiah, Fuh Kwo; Chen, Chung-Chi; Wen, Liang Saw; Liu, Kon Kee.

In: Geophysical Research Letters, Vol. 29, No. 23, 01.12.2002, p. 12-11.

Research output: Contribution to journalArticle

Wong, G. T.F. ; Chung, Shi Wei ; Shiah, Fuh Kwo ; Chen, Chung-Chi ; Wen, Liang Saw ; Liu, Kon Kee. / Nitrate anomaly in the upper nutricline in the northern South China Sea - Evidence for nitrogen fixation. In: Geophysical Research Letters. 2002 ; Vol. 29, No. 23. pp. 12-11.
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