Effect of meridional wind on gap-leaping western boundary current

Zheng Wang; Dongliang Yuan; Yijun Hou

doi:10.1007/s00343-010-9281-1

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Effect of meridional wind on gap-leaping western boundary current

Updated：2023-05-16

- Effect of meridional wind on gap-leaping western boundary current
- Journal of Oceanology and Limnology Vol. 28, Issue 2, Pages: 354-358(2010)
- Affiliations：
  
  1. Key Laboratory of Ocean Circulation and Waves Chinese Academy of Sciences
  2. Institute of Oceanology Chinese Academy of Sciences
  3. Graduate University of the Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9281-1
  CLC：
- Online First：20 March 2010，
  
  Published：2010
- Accepted：
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Wang, Z., Yuan, D. & Hou, Y. Effect of meridional wind on gap-leaping western boundary current., Chin. J. Ocean. Limnol. 28, 354–358 (2010). https://doi.org/10.1007/s00343-010-9281-1
DOI：

Wang, Z., Yuan, D. & Hou, Y. Effect of meridional wind on gap-leaping western boundary current., Chin. J. Ocean. Limnol. 28, 354–358 (2010). https://doi.org/10.1007/s00343-010-9281-1 DOI：

摘要

Abstract

Using a 1.5-layer reduced-gravity nonlinear shallow-water equation model

we studied the effect of the meridional wind on the western boundary currents (WBC) at critical states with hysteresis courses. The results of the simulation indicate that the WBC is prone to penetrating into the gap under northerly winds

and its path is more difficult to alter due to the larger interval between the two critical transition curves (C 1 P and C 1 L). For southerly winds

the WBC is prone to leaping across the gap

and its path is easier to alter due to the smaller interval between the two critical transition curves. The simulation results also indicate that the meridional winds over the southern region of the gap are the dominant factor determining the formation of the WBC. The dynamic mechanism influencing the transport of WBC near the gap is both Ekman transport and the blocking of Ekman transport. Ekman transport induced by northerly winds may reduce the transport of the WBC

causing the β-effect to dominate the meridional advection (promoting the penetration). Southerly winds

however

may enhance the transport of the WBC

causing the meridional advection to dominate the β-effect (promoting the leaping state). These results explain some structural features of the Kuroshio at the Luzon Strait.

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Keywords

references

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