| 热带印度洋降水的年际变化特征分析 |
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| 引用本文： | 刘琳,于卫东.热带印度洋降水的年际变化特征分析[J].中国海洋大学学报(自然科学版),2007,37(1):15-20. |
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| 作者姓名： | 刘琳 于卫东 |
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| 作者单位： | 1. 中国海洋大学气象系,山东,青岛,266100;国家海洋局第一海洋研究所海洋环境科学和数值模拟实验室,山东,青岛,266061
2. 国家海洋局第一海洋研究所海洋环境科学和数值模拟实验室,山东,青岛,266061 |
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| 基金项目： | 国家自然科学基金;科技部资助项目 |
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| 摘 要： | 对热带印度洋海区逐月降水资料的分析表明,热带印度洋海区降水年际变化的主要特征表现为东、西方向反位相的偶极子模态,该模态与热带印度洋海区低空纬向风场异常有较强的相关,并且与太平洋ENSO事件存在显著相关。另外对偶极子型降水主要模态的周期分析表明,偶极子型降水距平还存在1.5 a和4 a左右的变化周期。
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| 关 键 词： | 热带印度洋降水 年际变化 偶极子 EOF分析 |
| 文章编号： | 1672-5174(2007)01-015-06 |
| 修稿时间： | 2006-06-11 |
An Analysis of the Interannual Variability of Precipitation in the Tropical Indian Ocean |
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| LIU Lin,YU Wei-Dong.An Analysis of the Interannual Variability of Precipitation in the Tropical Indian Ocean[J].Periodical of Ocean University of China,2007,37(1):15-20. |
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| Authors: | LIU Lin YU Wei-Dong |
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| Institution: | 1. Department of Meteorology, Ocean University of China, Qingdao 266100, China; 2. First Institute of Oceanography Key Laboratory of Marine Science arid Numerical Modeling, SOA, Qingdao 266061, China |
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| Abstract: | The analysis discloses that the major mode of interannual variability of the precipitation in the tropical Indian Ocean is of dipole pattern,which shows that the eastern and western Indian Oceans are out of phase in precipitation.At the same time,the major interannual mode shows a high correlation with ENSO.The period analysis also finds that the dipole like a precipitation pattern in the tropical Indian Ocean has dominant periods of not ony 1.5 years but also 4 years. |
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| Keywords: | tropical Indian Ocean precipitation interannual variability dipole EOF |
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