Mesoscale structure of the central South China Sea detected by SCSMEX Buoy and Argo float

Lili Zeng; Dongxiao Wang; Yan Du; Ping Shi

doi:10.1007/s00343-010-0146-4

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Mesoscale structure of the central South China Sea detected by SCSMEX Buoy and Argo float

Updated：2023-05-16

- Mesoscale structure of the central South China Sea detected by SCSMEX Buoy and Argo float
- Journal of Oceanology and Limnology Vol. 28, Issue 5, Pages: 1102-1111(2010)
- Affiliations：
  
  1. Key Laboratory of Tropical Marine Environmental Dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences
  2. Yantai Institute of Coastal Zone Research Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-0146-4
  CLC：
- Online First：11 September 2010，
  
  Published：2010
- Accepted：
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Zeng, L., Wang, D., Du, Y. et al. Mesoscale structure of the central South China Sea detected by SCSMEX Buoy and Argo float., Chin. J. Ocean. Limnol. 28, 1102–1111 (2010). https://doi.org/10.1007/s00343-010-0146-4
DOI：

Zeng, L., Wang, D., Du, Y. et al. Mesoscale structure of the central South China Sea detected by SCSMEX Buoy and Argo float., Chin. J. Ocean. Limnol. 28, 1102–1111 (2010). https://doi.org/10.1007/s00343-010-0146-4 DOI：

摘要

Abstract

We addressed the mesoscale structure variation of the central South China Sea (SCS) with the measurements by a long-lived Argo float and a high-resolution ATLAS buoy during 1998–2002. T-S diagram indicates cooling and freshening events in 2000 and 2001 with lower salinity (0.5–0.8) and lower temperature (1–1.7°C). Significant decrease in the net heat flux and increase in the precipitation suggest that the cooling and freshening is due to extra forcing by the atmosphere. Additional to large year-to-year changes

intraseasonal variability is moderate in the research area. The axis of the maximum intraseasonal temperature and salinity signals are mainly located on the thermocline. Typically

amplitude and period of intraseasonal temperature is about 2°C and 40–60 days

and that of salinity is 0.3–0.5 and 35–60 days. Rapidly-changing winds

heat flux

and precipitation are critical in controlling the intraseasonal fluctuations of the mixed layer of the area. Studies on heat and freshwater balance in the mixed-layer further suggest that horizontal advection plays an important role in intraseasonal fluctuation in the upper ocean. In addition

the energetic mesoscale propagation radiated from the east boundary is linked to the intraseasonal variability in winter.

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references

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