Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles

Zhichun Zhang; Dongliang Yuan; Peter C. Chu

doi:10.1007/s00343-013-2169-0

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Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles

OriginalPaper | Updated：2023-05-16

- Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles
- Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles
- 海洋湖沼学报（英文） 2013年31卷第3期页码：656-664
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. Key Laboratory of Ocean Circulation and Waves Chinese Academy of Sciences
  3. Graduate University of Chinese Academy of Sciences
  4. Naval Ocean Analysis and Prediction (NOAP) Laboratory Department of Oceanography Naval Postgraduate School
- Author bio：
- Funds：
  
  Supported by the National Basic Research Program of China (973 Program) (No. 2012CB956000) and the National Natural Science Foundation of China (Nos. 40888001, 41176019). Z. Zhang is supported by KLOCAW 1208
- DOI：10.1007/s00343-013-2169-0
  中图分类号：
- 网络首发：2013-05-08，
  
  纸质出版：2013
- Accepted：
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Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles[J]. 海洋湖沼学报（英文）, 2013,31(3):656-664.

Zhang, Z., Yuan, D. & Chu, P.C. Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles., Chin. J. Ocean. Limnol. 31, 656–664 (2013). https://doi.org/10.1007/s00343-013-2169-0
Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles[J]. 海洋湖沼学报（英文）, 2013,31(3):656-664. DOI： 10.1007/s00343-013-2169-0.

Zhang, Z., Yuan, D. & Chu, P.C. Geostrophic meridional transport in tropical Northwest Pacific based on Argo profiles., Chin. J. Ocean. Limnol. 31, 656–664 (2013). https://doi.org/10.1007/s00343-013-2169-0 DOI：

摘要

Abstract

Absolute geostrophic currents in the North Pacific Ocean were calculated using P-vector method from newly gridded Argo profiling float data collected during 2004–2009. The meridional volume transport of geostrophic currents differed significantly from the classical Sverdrup balance

with differences of 10×106–20×106m3/s in the interior tropical Northwest Pacific Ocean. Analyses showed that errors of wind stress estimation could not explain all of the differences. The largest differences were found in the areas immediately north and south of the bifurcation latitude of the North Equatorial Current west of the dateline

and in the recirculation area of the Kuroshio and its extension

where nonlinear eddy activities were robust. Comparison of the geostrophic meridional transport and the wind-driven Sverdrup meridional transport in a high-resolution OFES simulation showed that nonlinear effects of the ocean circulation were the most likely reason for the differences. It is therefore suggested that the linear

steady wind-driven dynamics of the Sverdrup theory cannot completely explain the meridional transport of the interior circulation of the tropical Northwest Pacific Ocean.

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references

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