| Meridional Variation of the 1955-2003 Sea Level Anomalies in the Tropical Pacific Ocean Associated with El Nifio Events |
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| 作者姓名： | FANG Mingqiang and QU Liqin |
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| 作者单位： | [1]Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266100, P. R. China [2]The Key Laboratory of Ocean Remote Sensing, Ministry of Education, P. R. China |
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| 基金项目： | Acknowledgements This study is supported by the Doctoral Startup Foundation of 0cean University of China （2003） and also partly supported by the National Science Foundation of China （40506035）. The altimeter products were produced by the CLS Space 0ceanography Division as part of the Environment and Climate EU ENACT project （EVK2-CT2001-00117） and with support from CNES. The authors also thank the JEDAC for the temperature data. |
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| 摘 要： | The Sea Level Anomaly-Torque （SLAT, relative to a reference location in the Pacific Ocean）, which means the total torque of the gravity forces of sea waters with depths equal to the Sea Level Anomaly （S/A） in the tropical Pacific Ocean, is defined in this study. The time series of the SLAT from merged altimeter data （1993-2003） had a great meridional variation during the 1997-1998 E1 Nifio event. By using historical upper layer temperature data （1955-2003） for the tropical Pacific Ocean, the temperature-based SLAT is also calculated and the meridional variation can be found in the historical E1 Nifio events （1955-2003）, which suggests that the meridional shifts of the sea level anomaly are also intrinsic oscillating modes of the E1 Nifio cycles like the zonal shifts.
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| 关 键 词： | 海平面异常 热带 太平洋 子午线 |
| 收稿时间： | 30 November 2006 |
| 修稿时间： | 2006-11-30 |
Meridional variation of the 1955–2003 sea level anomalies in the tropical Pacific Ocean associated with El Niño events |
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| FANG Mingqiang and QU Liqin.Meridional Variation of the 1955-2003 Sea Level Anomalies in the Tropical Pacific Ocean Associated with El Nifio Events[J].Journal of Ocean University of China,2007,6(4):332-338. |
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| Authors: | Mingqiang Fang Liqin Qu |
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| Institution: | (1) Ocean Remote Sensing Institute, Ocean University of China, Qingdao, 266100, P. R. China;(2) The Key Laboratory of Ocean Remote Sensing, Ministry of Education, P. R. China |
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| Abstract: | The Sea Level Anomaly-Torque (SLAT, relative to a reference location in the Pacific Ocean), which means the total torque of the gravity forces of sea waters with depths equal to the Sea Level Anomaly (SLA) in the tropical Pacific Ocean, is defined in this study. The time series of the SLAT from merged altimeter data (1993–2003) had a great meridional variation during the 1997–1998 El Niño event. By using historical upper layer temperature data (1955–2003) for the tropical Pacific Ocean, the temperature-based SLAT is also calculated and the meridional variation can be found in the historical El Niño events (1955–2003), which suggests that the meridional shifts of the sea level anomaly are also intrinsic oscillating modes of the El Niño cycles like the zonal shifts. |
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| Keywords: | E1 Nifio sea level anomaly tropical Pacific meridional transport |
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