Journal of Marine Sciences ›› 2014, Vol. 32 ›› Issue (1): 11-18.DOI: 10.3969/j.issn.1009-909X.2014.01.002

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Analysis of low-frequency variability of mixed layer salinity at the western Luzon Strait

SHEN Hua1,2   

  1. 1. State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China;
    2. The Second Institute of Oceanography, SOA, Hangzhou 310012, China
  • Received:2013-03-05 Revised:2013-05-27 Online:2014-03-15 Published:2022-11-25

Abstract: Based on WOD09 and Argo data of twenty seven years(1984-2010), and combined with SODA、OFES、GPCP and WHOI data, the long-term trends and interdecadal variability of mixed layer salinity at the western Luzon Strait were analyzed. The results can be described as follows: (1)the salinity decreased about-0.020 per year from 1984 to 2010; (2)because of the variability of Kuroshio meridianal flux, the Kuroshio invasion was weakened after 1999, which resulted in the salinity being positive anomaly before 1999, with a maximum of 0.14 and a mean of 0.05, while negative anomaly after 1999, with a minimum of -0.22 and a mean of -0.06; (3)by calculating the salinity budget, the variability of salinity at the western Luzon Strait is controlled by advection primarily.

Key words: South China Sea, western Luzon Strait, salinity, low-frequency variability

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