| Seasonal and intraseasonal variations of the surface Taiwan Warm Current |
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| 引用本文： | 崔茂常 胡敦欣 吴玲娟. Seasonal and intraseasonal variations of the surface Taiwan Warm Current[J]. 中国海洋湖沼学报, 2004, 22(3): 271-277. DOI: 10.1007/BF02842559 |
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| 作者姓名： | 崔茂常 胡敦欣 吴玲娟 |
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| 作者单位： | InstituteofOceanology,,ChineseAcademyofSciences,Qingdao266071,China |
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| 基金项目： | Supported by the National Basic Research Program (No. G1999043803), Hi-Tetch Research and Development Program of China (No. 2001AA633060) and the grant of Institute of Oceanology, Chinese Academy of Sciences (No.L370221117). |
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| 摘 要： | To study seasonal and intraseasonal variations of the Taiwan Warm Current (TWC) in detail Rotated Empirical Orthogonal Function (REOF) and Extended Associate Pattern Analysis (EAPA) are jointly adopted with daily sea surface salinity (SSS), sea surface temperature (SST) and sea surface height (SSH) datasets covering 1126 days from American Navy Experimental Real-Time East Asian Seas Ocean Nowcast System in the present paper. Results show that the first and second REOFs of SST in the southern East China Sea (SECS) account for 50.8% and 39.8% of the total variance. The surface TWC contains persistent (multi-year mean), seasonal and intraseasonal components. The persistent one mainly inosculates with the Kuroshio but the seasonal and intraseasonal ones are usually active only on the continental shelf. Its persistent component is produced by inertial flow of the Kuroshio, however its seasonal and intraseasonal ones seems coming from seasonal and intraseasonal oscillations of monsoon force. The seasonal one reaches its maximum in late summer,lasting about four months and the intraseasonal one takes place at any seasons, lasting more than 40 days.
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| 关 键 词： | 季节性变化 句内变化 暖流 旋转函数 海面温度 |
| 收稿时间： | 2004-04-22 |
| 修稿时间： | 2004-05-26 |
Seasonal and intraseasonal variations of the surface Taiwan Warm Current |
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| Cui Maochang,Hu Dunxin,Wu Lingjuan. Seasonal and intraseasonal variations of the surface Taiwan Warm Current[J]. Chinese Journal of Oceanology and Limnology, 2004, 22(3): 271-277. DOI: 10.1007/BF02842559 |
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| Authors: | Cui Maochang Hu Dunxin Wu Lingjuan |
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| Affiliation: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China |
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| Abstract: | To study seasonal and intraseasonal variations of the Taiwan Warm Current (TWC) in detail, Rotated Empirical Orthogonal Function (REOF) and Extended Associate Pattern Analysis (EAPA) are jointly adopted with daily sea surface salinity (SSS), sea surface temperature (SST) and sea surface height (SSH) datasets covering 1126 days from American Navy Experimental Real-Time East Asian Seas Ocean Nowcast System in the present paper. Results show that the first and second REOFs of SST in the southern East China Sea (SECS) account for 50.8% and 39.8% of the total variance. The surface TWC contains persistent (multi-year mean), seasonal and intraseasonal components. The persistent one mainly inosculates with the Kuroshio but the seasonal and intraseasonal ones are usually active only on the continental shelf. Its persistent component is produced by inertial flow of the Kuroshio, however its seasonal and intraseasonal ones seems coming from seasonal and intraseasonal oscillations of monsoon force. The seasonal one reaches its maximum in late summer, lasting about four months and the intraseasonal one takes place at any seasons, lasting more than 40 days. |
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| Keywords: | seasonal and intraseasonal variations surface TWC REOF EAPA |
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