Interannual to decadal variation of spring sea level anomaly in the western South China Sea

Fuwen Qiu; Wendong Fang; Aijun Pan; Jing Cha; Shanwu Zhang; Jiang Huang

doi:10.1007/s00343-016-5203-1

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Interannual to decadal variation of spring sea level anomaly in the western South China Sea

Updated：2023-05-16

- Interannual to decadal variation of spring sea level anomaly in the western South China Sea
- Journal of Oceanology and Limnology Vol. 35, Issue 1, Pages: 79-88(2017)
- Affiliations：
  
  1. Third Institute of Oceanography State Oceanic Administration
  2. State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-016-5203-1
  CLC：
- Online First：11 April 2016，
  
  Published：2017
- Accepted：
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Qiu, F., Fang, W., Pan, A. et al. Interannual to decadal variation of spring sea level anomaly in the western South China Sea., Chin. J. Ocean. Limnol. 35, 79–88 (2017). https://doi.org/10.1007/s00343-016-5203-1
DOI：

Qiu, F., Fang, W., Pan, A. et al. Interannual to decadal variation of spring sea level anomaly in the western South China Sea., Chin. J. Ocean. Limnol. 35, 79–88 (2017). https://doi.org/10.1007/s00343-016-5203-1 DOI：

摘要

Abstract

Satellite observations of sea level anomalies (SLA) from January 1993 to December 2012 are used to investigate the interannual to decadal changes of the boreal spring high SLA in the western South China Sea (SCS) using the Empirical Orthogonal Function (EOF) method. We find that the SLA variability has two dominant modes. The Sea Level Changing Mode (SLCM) occurs mainly during La Niña years

with high SLA extension from west of Luzon to the eastern coast of Vietnam along the central basin of the SCS

and is likely induced by the increment of the ocean heat content. The Anticyclonic Eddy Mode (AEM) occurs mainly during El Niño years and appears to be triggered by the negative wind curl anomalies within the central SCS. In addition

the spring high SLA in the western SCS experienced a quasi-decadal change during 1993–2012; in other words

the AEM predominated during 1993–1998 and 2002–2005

while the La Niña-related SLCM prevailed during 1999–2001 and 2006–2012. Moreover

we suggest that the accelerated sea level rise in the SCS during 2005–2012 makes the SLCM the leading mode over the past two decades.

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references

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