Seasonal and intraseasonal variations of the surface Taiwan Warm Current

2004 ◽  
Vol 22 (3) ◽  
pp. 271-277 ◽  
Author(s):  
Cui Maochang ◽  
Hu Dunxin ◽  
Wu Lingjuan
Keyword(s):  
Taiwan Warm Current ◽  
Warm Current ◽  
Intraseasonal Variations

scholarly journals Synoptic fluctuation of the Taiwan Warm Current in winter on the East China Sea shelf

2016 ◽  
Author(s):  
Jiliang Xuan ◽  
Daji Huang ◽  
Thomas Pohlmann ◽  
Jian Su ◽  
Bernhard Mayer ◽  
...  
Keyword(s):  
Ocean Model ◽  
Coastal Current ◽  
Gradient Term ◽  
Taiwan Warm Current ◽  
Offshore Area ◽  
Warm Current ◽  
Geostrophic Balance ◽  
The North ◽  
The Cross ◽  
The Taiwan Strait

Abstract. The seasonal mean and synoptic fluctuation of the wintertime Taiwan Warm Current (TWC) were investigated using a well validated finite volume community ocean model. The spatial distribution and dynamics of the synoptic fluctuation were highlighted. The seasonal mean of the wintertime TWC has two branches: an inshore branch between the 30 and 100 m isobaths and an offshore branch between the 100 and 200 m isobaths. The Coriolis term is much larger than the inertia term and is almost balanced by the pressure gradient term in both branches, indicating the geostrophic balance of the mean current. Two areas with significant fluctuations of the TWC were identified during wintertime. One of the areas is located to the north of Taiwan with velocities varying in the cross-shore direction. These significant cross-shore fluctuations are driven by barotropic pressure gradients associated with the intrusion of the Taiwan Strait Current (TSC). When a larger TSC intrudes north of Taiwan, the isobaric slope tilts downward from south to north, leading to a cross-shore current from the coastal area to the offshore area. When the TSC intrusion is weak, the cross-shore current to the north of Taiwan is directed from offshore to inshore. The other area of significant fluctuation is located in the inshore area, extending in the region between the 30 and 100 m isobaths. The fluctuations are generally strong in the alongshore direction, in particular at the latitudes 26.5° N and 28° N where they are important for the local cross-shore transports. Wind affects the synoptic fluctuation through episodic events. When the northeasterly monsoon prevails, the southward Zhe-Min Coastal Current dominates the inshore area associated with a deepening of the mixed layer. When the winter monsoon is weakened or the southerly wind prevails, the northward TWC dominates in the inshore area.

The observed variations of the north intrusion of the bottom Taiwan Warm Current Inshore Branch and its response to wind

2019 ◽  
Vol 30 ◽  
pp. 100690 ◽  
Author(s):  
Jianfeng Wang ◽  
Fei Yu ◽  
Qiang Ren ◽  
Guangcheng Si ◽  
Chuanjie Wei
Keyword(s):  
Taiwan Warm Current ◽  
Warm Current ◽  
The North

scholarly journals Does the Taiwan warm current exist in winter?

2004 ◽  
Vol 31 (12) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jianrong Zhu ◽  
Changsheng Chen ◽  
Pingxing Ding ◽  
Chunyan Li ◽  
Huichan Lin
Keyword(s):  
Taiwan Warm Current ◽  
Warm Current

scholarly journals Synoptic fluctuation of the Taiwan Warm Current in winter on the East China Sea shelf

Ocean Science ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 105-122 ◽  
Author(s):  
Jiliang Xuan ◽  
Daji Huang ◽  
Thomas Pohlmann ◽  
Jian Su ◽  
Bernhard Mayer ◽  
...  
Keyword(s):  
Ocean Model ◽  
Coastal Current ◽  
Gradient Term ◽  
Taiwan Warm Current ◽  
Offshore Area ◽  
Warm Current ◽  
Geostrophic Balance ◽  
The North ◽  
The Cross ◽  
The Taiwan Strait

Abstract. The seasonal mean and synoptic fluctuation of the wintertime Taiwan Warm Current (TWC) were investigated using a well-validated finite volume community ocean model. The spatial distribution and dynamics of the synoptic fluctuation were highlighted. The seasonal mean of the wintertime TWC has two branches: an inshore branch between the 30 and 100 m isobaths and an offshore branch between the 100 and 200 m isobaths. The Coriolis term is much larger than the inertia term and is almost balanced by the pressure gradient term in both branches, indicating geostrophic balance of the mean current. Two areas with significant fluctuations of the TWC were identified during wintertime. One of the areas is located to the north of Taiwan with velocities varying in the cross-shore direction. These significant cross-shore fluctuations are driven by barotropic pressure gradients associated with the intrusion of the Taiwan Strait Current (TSC). When a strong TSC intrudes to the north of Taiwan, the isobaric slope tilts downward from south to north, leading to a cross-shore current from the coastal area to the offshore area. When the TSC intrusion is weak, the cross-shore current to the north of Taiwan is directed from offshore to inshore. The other area of significant fluctuation is located in the inshore area between the 30 and 100 m isobaths. The fluctuations are generally strong both in the alongshore and cross-shore directions, in particular at the latitudes 26.5 and 28° N. Wind affects the synoptic fluctuation through episodic events. When the northeasterly monsoon prevails, the southwestward Zhe-Min coastal current dominates the inshore area associated with a deepening of the mixed layer. When the winter monsoon is weakened or the southwesterly wind prevails, the northeastward TWC dominates in the inshore area.

scholarly journals Kuroshio subsurface water feeds the wintertime Taiwan Warm Current on the inner East China Sea shelf

2016 ◽  
Vol 121 (7) ◽  
pp. 4790-4803 ◽  
Author(s):  
Ergang Lian ◽  
Shouye Yang ◽  
Hui Wu ◽  
Chengfan Yang ◽  
Chao Li ◽  
...  
Keyword(s):  
East China Sea ◽  
Subsurface Water ◽  
East China ◽  
Taiwan Warm Current ◽  
Warm Current ◽  
China Sea ◽  
East China Sea Shelf
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