| A numerical study on seasonal variations of the Taiwan Warm Current |
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| 作者姓名： | 白学志 胡敦欣 |
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| 作者单位： | Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China，Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China |
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| 基金项目： | SupportedbytheNationalBasicResearchProgramofChina(No.G1999043803). |
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| 摘 要： | Princeton Ocean Model (POM) is employed to investigate the Taiwan Warm Current (TWC) and its seasonal variations. Results show that the TWC exhibits pronounced seasonal variations in its sources, strength and flow patterns. In summer, the TWC flows northeast in straight way and reaches around 32°N; it comes mainly from the Taiwan Strait, while its lower part is from the shelf-intrusion of the Kuroshio subsurface water (KSSW). In winter, coming mainly from the shelf-intrusion of the Kuroshio northeast of Taiwan, the TWC flows northward in a winding way and reaches up around 30°N. The Kuroshio intrusion also has distinct seasonal patterns. The shelf-intrusion of KSSW by upwelling is almost the same in four seasons with a little difference in strength; it is a persistent source of the TWC. However, Kuroshio surface water (KSW) can not intrude onto the shelf in summer, while in winter the intrusion of KSW always occurs. Additional experiments were conducted to examine effects of winds and transport through
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| 关 键 词： | 数字化 季节性变化 普林斯顿 海洋模型 台湾暖流 |
| 收稿时间： | 25 April 2004 |
| 修稿时间： | 29 May 2004 |
A numerical study on seasonal variations of the Taiwan Warm Current |
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| Bai?Xuezhi,Hu?Dunxin.A numerical study on seasonal variations of the Taiwan Warm Current[J].Chinese Journal of Oceanology and Limnology,2004,22(3):278-285. |
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| Authors: | Bai Xuezhi Hu Dunxin |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China |
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| Abstract: | Princeton Ocean Model (POM) is employed to investigate the Taiwan Warm Current (TWC) and its seasonal variations. Results
show that the TWC exhibits pronounced seasonal variations in its sources, strength and flow patterns. In summer, the TWC flows
northeast in straight way and reaches around 32°N; it comes mainly from the Taiwan Strait, while its lower part is from the
shelf-intrusion of the Kuroshio subsurface water (KSSW). In winter, coming mainly from the shelf-intrusion of the Kuroshio
northeast of Taiwan, the TWC flows northward in a winding way and reaches up around 30°N. The Kuroshio intrusion also has
distinct seasonal patterns. The shelf-intrusion of KSSW by upwelling is almost the same in four seasons with a little difference
in strength; it is a persistent source of the TWC. However, Kuroshio surface water (KSW) can not intrude onto the shelf in
summer, while in winter the intrusion of KSW always occurs. Additional experiments were conducted to examine effects of winds
and transport through the Taiwan Strait on the TWC. In winter, northerly winds enhance the shelf-intrusion of the Kuroshio
and spread northward, but hamper the northward inflow from the Taiwan Strait. In summer, the effect of the winds is confined
in the surface layer, and less obvious than that of winter. Transport through the Taiwan Strait influences the TWC significantly.
With the Taiwan Strait closed in the simulation, the TWC would be dramatically weakened.
Contribution No.4613 from the Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
Supported by the National Basic Research Program of China (No. G1999043803). |
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| Keywords: | Taiwan Warm Current Kuroshio intrusion seasonal variations numerical simulation |
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