Journal of Ocean University of China

, Volume 10, Issue 4, pp 305–313 | Cite as

Numerical study on the bifurcation of the North Equatorial Current

  • Yulong Liu
  • Qi Wang
  • Jun Song
  • Xiande Zhu
  • Xiaoqing Gong
  • Fang Wu
Article

Abstract

A 1.5-layer reduced-gravity model forced by wind stress is used to study the bifurcations of the North Equatorial Current (NEC). The authors found that after removing the Ekman drift, the modelled circulations can serve well as a proxy of the SODA circulations on the σθ=25.0 kg m−3 potential density surface based on available long-term reanalysis wind stress data. The modelled results show that the location of the western boundary bifurcation of the NEC depends on both zonal averaged and local zero wind stress curl latitude. The effects of the anomalous wind stress curl added in different areas are also investigated and it is found that they can change the strength of the Mindanao Eddy (ME), and then influence the interior pathway.

Keyword

North Equatorial Current the western boundary interior pathway bifurcation wind stress curl 1&1/2 Model 

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Copyright information

© Science Press, Ocean University of China and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yulong Liu
    • 1
    • 2
  • Qi Wang
    • 1
  • Jun Song
    • 2
  • Xiande Zhu
    • 1
    • 3
  • Xiaoqing Gong
    • 1
  • Fang Wu
    • 1
  1. 1.Department of Marine MeteorologyOcean University of ChinaQingdaoP. R. China
  2. 2.National Marine Data and Information ServiceTianjinP. R. China
  3. 3.People’s Liberation Army 91422Troops, YantaiP. R. China

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