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PHY-04  Cross-scale interactions: mesoscale and smaller
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Submesoscale Physical-Biological Processes in the Winter and Spring Taiwan Strait
Yuwu Jiang* , State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen
Zhonghua Zhao, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen
Lie-Yauw Oey, Princeton University, Princeton, NJ, USA
Bangqin Huang, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen
Wenfang Lu, School of Marine Sciences, Sun Yat-Sen University, Zhuhai |
This study used cruise ship and remote sensing to analyze off-coast phytoplankton bloom during the late fall to early spring monsoon period in the Taiwan Strait when northeasterly wind prevails. The cruise observation shows high phytoplankton growth during northeasterly wind relaxation periods and lower growth when the wind is persistent. Composite and Self-Organizing-Map analyses using 21-year satellite and wind data from 1998 to 2018 confirm the significant growth of phytoplankton during the northeasterly wind relaxation period. Cruise and model results consistently show that the blooming coincides with intense stratification near the surface when the wind relaxes. It suggests that restratification by the collapse of the coastal front plays a significant role in the bloom
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