| 1980～1999年热带太平洋次表层盐度年际变化同化数据分析 |
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| 引用本文： | 李海洋,谢强,王东晓.1980～1999年热带太平洋次表层盐度年际变化同化数据分析[J].海洋学报,2006,28(6):5-11. |
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| 作者姓名： | 李海洋 谢强 王东晓 |
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| 作者单位： | 1.中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广东广州 510301;广州市南沙区气象局, 广东广州 511458 |
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| 基金项目： | 国家自然科学基金重点项目(40136010)，科技部重大基础研究前期研究专项“Argo大型科学观测试验”项目，中国科学院知识创新重要方向项目(KZCX2-205) |
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| 摘 要： | 通过统计方法利用一套海洋同化数据分析了热带太平洋次表层的盐度变化特征.结果表明次表层盐度的年际变化与ENSO相关,且次表层盐度信号区域呈东西方向“跷跷板”的分布.对影响这些次表层的盐度信号区域平均的纬向平流、经向平流、垂直运动和淡水通量异常等因素进行了分析,并且与影响表层盐度年际变化模态的影响因素差异进行了比较,结果表明,纬向平流的异常对表层盐度的异常变化影响较大,而对次表层盐度异常有较大影响的是海水的垂直运动异常.
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| 关 键 词： | 热带太平洋 ENSO 次表层盐度变化 |
| 文章编号： | 0253-4193（2006）06-0005-07 |
| 收稿时间： | 02 13 2006 12:00AM |
| 修稿时间： | 2006-02-132006-08-15 |
Interannual variations of sub-surface salinity in the tropical Pacific Ocean |
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| LI Hai-yang,XIE Qiang and WANG Dong-xiao.Interannual variations of sub-surface salinity in the tropical Pacific Ocean[J].Acta Oceanologica Sinica (in Chinese),2006,28(6):5-11. |
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| Authors: | LI Hai-yang XIE Qiang and WANG Dong-xiao |
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| Institution: | 1.LED, South Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;Guangzhou Nansha District Meteorological Adminitration, Guangzhou 511458, China2.LED, South Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China |
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| Abstract: | The salinity variability on the interannual time-scale is analyzed using SODA data by EOF statistical method.The results show that there is high correlation coefficient between interannual variation in the sub-surface salinity and ENSO.The signatures have a pan-longitudinal "seesaw" feature.The factors including zonal advection,meridional advection,vertical movement and fresh water flux anomalies were analyzed.The difference among these factors,which play important roles for surface and sub-surface salinity variations,was investigated.It was shown that the zonal advection anomaly is a more important factor in the surface but the vertical movement anomaly for the sub-surface regarding salinity variability on the interannual time-scale. |
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| Keywords: | tropical Pacific ENSO sub-surface salinity variation |
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