Enhancement of phytoplankton primary productivity in the southern East China Sea following episodic typhoon passage

Details Enhancement of phytoplankton primary productivity in the southern East China Sea following episodic typhoon passage Enhancement of phytoplankton primary productivity in the southern East China Sea following episodic typhoon passage

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3611603s&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 11, CiteID L11603

Mathematics

Logic

Oceanography: General: Remote Sensing And Electromagnetic Processes (0689, 2487, 3285, 4455, 6934), Oceanography: General: Continental Shelf And Slope Processes (3002), Oceanography: Biological And Chemical: Phytoplankton, Oceanography: Physical: Currents, Oceanography: Biological And Chemical: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 1615, 4912)

Scientific paper

The enhancement of primary productivity (PPenh) in the southern East China Sea (ECS) following 16 typhoon passages was investigated using ocean color data and a primary productivity model. PPenh tended to be higher when typhoons traversed slowly with trajectories that allowed strong southerly winds to prevail over Yonaguni Island. Such long-lasting southerly winds were believed to push the Kuroshio current axis shelfward, enhancing the upwelling of nutrients, hence promoting new productivity (NP). The importance of long-lasting southerly winds as a proxy for physical perturbations underlying PPenh was expressed by an empirical equation by which 88% of PPenh variation could be explained. Applying this equation, we assessed that typhoon passages accounted for a minimum of 0.6-11.8% of the ECS summer-fall NP, suggesting that typhoon passage over the southern ECS is an important phenomenon supporting NP in the ECS.

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