| Tian Jiwei,Liu Huiqing,Qian Weihong. 2003. A dipole mode at thermocline layer in the tropical Indian Ocean. Acta Oceanologica Sinica, (1):15－24 |
| A dipole mode at thermocline layer in the tropical Indian Ocean |
| A dipole mode at thermocline layer in the tropical Indian Ocean |
| Received:June 17, 2002 Revised:August 20, 2002 |
| DOI： |
| Key words:Temperature anomaly dipole mode in thermocline layer tropical Indian Ocean empirical orthogonal function |
| 中文关键词: Temperature anomaly dipole mode in thermocline layer tropical Indian Ocean empirical orthogonal function |
| 基金项目: |
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| Abstract: |
| Temperature data at different layers of the past 45 years were studied and we found adiploe mode in the thermocline layer(DMT):anomalously cold sea temperature off the coast of Sumatra and warm sea temperature in the western Indian Ocean.First,we analyzed the temperature and the temperature anomaly(TA) along the equatorial Indian Ocean in different layers.This shows that stronger cold and warm TA signals appeared at subsurface than at the surface in the tropical Indian Ocean.This result shows that there may be a strong dipole mode pattern in the subsurface tropical Indian Ocean.Secondly we used Empirical Orthogonal Functions(EOF) to analyze the TA at thermocline layer.The first EOF pattern was a dipole mode pattern.Finally we analyzed the correlations between DMT and surface tropical dipole mode(SDM),DMT and Nino 3 SSTA,etc.and these correlations are strong. |
| 中文摘要: |
| Temperature data at different layers of the past 45 years were studied and we found adiploe mode in the thermocline layer(DMT):anomalously cold sea temperature off the coast of Sumatra and warm sea temperature in the western Indian Ocean.First,we analyzed the temperature and the temperature anomaly(TA) along the equatorial Indian Ocean in different layers.This shows that stronger cold and warm TA signals appeared at subsurface than at the surface in the tropical Indian Ocean.This result shows that there may be a strong dipole mode pattern in the subsurface tropical Indian Ocean.Secondly we used Empirical Orthogonal Functions(EOF) to analyze the TA at thermocline layer.The first EOF pattern was a dipole mode pattern.Finally we analyzed the correlations between DMT and surface tropical dipole mode(SDM),DMT and Nino 3 SSTA,etc.and these correlations are strong. |
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