Journal of Marine Sciences ›› 2023, Vol. 41 ›› Issue (2): 14-27.DOI: 10.3969/j.issn.1001-909X.2023.02.002

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Upper ocean response to super typhoon Rammasun(2014) based on Argo data in the South China Sea

YU Jie1,2(), ZHANG Han1,2,3,*(), CHEN Dake1,2,3,4   

  1. 1. State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China
    2. Second Institute of Oceanography, MNR, Hangzhou 310012, China
    3. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
    4. School of Oceanography, Shanghai Jiao Tong University, Shanghai 201100, China
  • Received:2022-05-20 Revised:2022-08-31 Online:2023-06-15 Published:2023-07-27


Using Argo measured data combined with satellite remote sensing data and moored buoy data, the upper ocean temperature and salinity response caused by super typhoon Rammasun in 2014 was analyzed and studied. The result shows that super typhoon Rammasun resulted in cooling of sea surface temperature and deepening of mixing layer. Meanwhile, mixing length and vertical velocity induced by typhoon were calculated in this research, which explained the causes of temperature changes in the subsurface layer. Strong mixing and weak upwelling led to warming of the subsurface layer, whereas weak mixing and strong upwelling led to cooling of the subsurface layer. Compared with the change of temperature, the response of salinity was more complex. Precipitation first caused the decrease of surface salinity, and then vertical mixing led to a large increase of surface salinity. However, the effect of precipitation could greatly inhibit this process. After the typhoon departed, the vertical mixing was weakened, and the salinity was greatly reduced because of the heavy precipitation, it was even lower than that before the typhoon.

Key words: super typhoon, Argo, temperature, salinity

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