Enhanced primary production in the oligotrophic South China Sea by eddy injection in spring

I. I. Lin, Chun Chi Lien, Chau-Ron Wu, George T.F. Wong, Chih Wei Huang, Tzu Ling Chiang

    研究成果: 雜誌貢獻期刊論文同行評審

    45 引文 斯高帕斯(Scopus)

    摘要

    In May 2003, a phytoplankton bloom of chlorophyll-a (Chl-a) concentration of 0.3-0.4 mgm-3 was observed at the centre of northern South China Sea (SCS) by NASA's Sea-viewing Wide Field-of-View sensor. As this region is remote and known to be oligotrophic in spring (Chl-a concentration typically at ∼0.05-0.08 mgm-3), it is intriguing to explore this unusual happening. Based on six different remote sensing data and numerical modelling, the results suggest that the injection of an ocean eddy is the most likely cause of the bloom. Due to long-range transport of a large (700 × 500 km) anti-cyclonic ocean eddy, coastal nutrients and plankton could be brought across hundreds of kilometres to the centre of northern SCS and impact the biogeochemistry. The open ocean part of the northern SCS basin has long been considered generally free from coastal influences. This work provides new evidence that proves otherwise. Moreover, from the perspective of physical oceanography, it is interesting to observe that, outside the monsoon seasons, there can be well-defined anti-cyclonic ocean circulation existing in the SCS without the prevailing monsoonal wind.

    原文英語
    文章編號L16602
    期刊Geophysical Research Letters
    37
    發行號16
    DOIs
    出版狀態已發佈 - 2010 八月 1

    ASJC Scopus subject areas

    • Geophysics
    • Earth and Planetary Sciences(all)

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