Relative contributions of temperature and salinity to steric sea level over the South China Sea

Jin SHA; Xiaoming LI; Xiaohai YAN

doi:10.1007/s00343-021-1057-2

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Relative contributions of temperature and salinity to steric sea level over the South China Sea

Physics | Updated：2023-05-20

- Relative contributions of temperature and salinity to steric sea level over the South China Sea
- Journal of Oceanology and Limnology Vol. 40, Issue 2, Pages: 428-437(2022)
- Affiliations：
  
  1.Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
  2.Hainan Key Laboratory of Earth Observation, Sanya 502022, China
  3.Center for Remote Sensing, College of Earth, Ocean and Environment, University of Delaware, Newark 19711, DE, USA
  4.Joint Institute for Coastal Research and Management, University of Delaware/Xiamen University, USA/China
- Author bio：
  
  Jin SHA, E-mail: shajin@aircas.ac.cn
- Funds：
- DOI：10.1007/s00343-021-1057-2
  CLC：
- Received：16 February 2021，
  
  Accepted：16 March 2021，
  
  Online First：13 April 2022，
  
  Published：2022-03
- Accepted：
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Jin SHA, Xiaoming LI, Xiaohai YAN. Relative contributions of temperature and salinity to steric sea level over the South China Sea[J]. Journal of Oceanology and Limnology, 2022, 40(2): 428-437.
DOI：

Jin SHA, Xiaoming LI, Xiaohai YAN. Relative contributions of temperature and salinity to steric sea level over the South China Sea[J]. Journal of Oceanology and Limnology, 2022, 40(2): 428-437. DOI： 10.1007/s00343-021-1057-2.

摘要

Abstract

The relative contributions of surface temperature and salinity to steric sea-level variations are investigated using satellite observations and reanalysis datasets. By defining a contribution factor

the relative roles of thermal and haline steric height variations are quantified over the South China Sea (SCS). The thermosteric height dominates the steric sea level variation in the northern SCS deep basin

while the contribution of the halosteric height increases southward. Further investigation reveals that this transition is related to the meridional imbalance of surface heat flux and precipitation variations. The revealed steric constitution distribution is not confined to the surface but extends within the upper layer to approximately 50m depth

and then the thermosteric component dominates from the depth underneath. The results of this study clarify the steric sea level constitution over the SCS

benefit the understanding of sea-level variations at the regional scale

and may further facilitate multisensor remote sensing data mining studies.

关键词

Keywords

references

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