Decadal variations of the North Pacific Tropical Water at 137°E

Wenqiang LIN; Fangguo ZHAI; Yanzhen GU; Peiliang LI

doi:10.1007/s00343-019-8123-z

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Decadal variations of the North Pacific Tropical Water at 137°E

Physics | Updated：2023-05-20

- Decadal variations of the North Pacific Tropical Water at 137°E
- Journal of Oceanology and Limnology Vol. 37, Issue 5, Pages: 1495-1509(2019)
- Affiliations：
  
  1.Physical Oceanography Laboratory, College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266003, China
  2.Institute of Physical Oceanography and Remote Sensing, Ocean College, Zhejiang University, Zhoushan 316021, China
- Author bio：
  
  GU Yanzhen, guyanzhen@ouc.edu.cn
- Funds：
- DOI：10.1007/s00343-019-8123-z
  CLC：
- Received：29 April 2018，
  
  Accepted：22 June 2018，
  
  Online First：27 November 2018，
  
  Published：2019-09
- Accepted：
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Wenqiang LIN, Fangguo ZHAI, Yanzhen GU, et al. Decadal variations of the North Pacific Tropical Water at 137°E[J]. Journal of Oceanology and Limnology, 2019, 37(5): 1495-1509.
DOI：

Wenqiang LIN, Fangguo ZHAI, Yanzhen GU, et al. Decadal variations of the North Pacific Tropical Water at 137°E[J]. Journal of Oceanology and Limnology, 2019, 37(5): 1495-1509. DOI： 10.1007/s00343-019-8123-z.

摘要

Abstract

The decadal variations of the North Pacific Tropical Water (NPTW) at 137°E in the western North Pacific Ocean are investigated based on the repeated hydrographic observations along with two global gridded ocean products. The results indicate that the maximum salinity of NPTW experiences significant quasi-decadal variations

having maxima around 1979

1987

1995

2004

and 2012

while minima around 1974

1983

1991

1999

and 2008 during the period of interest. The NPTW area also shows similar quasidecadal variation

expanding/shrinking as its maximum salinity increases/decreases at the 137°E section. These variations are induced mainly by changes in the mixed layer salinity in the source region and largescale circulation in the northwestern tropical Pacific Ocean

both of which are related to the Pacific Decadal Oscillation. The underlying processes at work are further confirmed through conducting the subsurface salinity budget analysis. Besides

short-term processes are also at work through nonlinear interactions

especially after 2000.

关键词

Keywords

references

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