1980～1999年热带太平洋次表层盐度年际变化同化数据分析

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

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
2.
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

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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出版历程
- 收稿日期: 2006-02-13
- 修回日期: 2006-08-15

Interannual variations of sub-surface salinity in the tropical Pacific Ocean

1.
LED, South Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;Guangzhou Nansha District Meteorological Adminitration, Guangzhou 511458, China
2.
LED, South Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China

摘要

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.
- 热带太平洋 /
- ENSO /
- 次表层盐度变化
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-longit udinal "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 anomalyis a more important factor in the surface but the vertical movement anomaly for the sub-surface regarding salinity variability on the interannual time-scale.
- tropical Pacific /
- ENSO /
- sub-surface salinity variation

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参考文献(9)

ANTONOV J I,LEVITUS S,BOYER T P.Steric Sea level variations during 1957-1994:importance of salinity[J].J Geophys Res,2002,107(C12):8013,doi: 10.1029/2001JC000964.

DONGUY J R,HENIN C.Anomalous navifacial salinities in the tropical Pacific Ocean[J].J Mar Res,1976,34:355-364

DELCROIX T,HENIN C.Seasonal and interannual variations of sea-surface salinity in the tropical Pacific Ocean[J].J Geophys Res,1991,96:22 135-22 150.

CRONIN M F,MCPHADEN M J.Barrier layer formation during westerly wind bursts[J].J Geophys Res,2002,107(C12):8020,doi: 10.1029/2001JC0011710.

DESSIER A,DONGUY J R.The sea surface salinity in the tropical Atlantic between 10°S and 30°N-seasonal and interannual variations (1977-1989)[J].Deep-Sea Res I,1994,41(1):81-100.

李海洋,王东晓,谢强.热带太平洋海面盐度年际变化的海洋同化数据分析[J].热带气象学报,2003,19(增刊):97-106.

BINGHAM F M,HOWDEN S D,KOBLINSKY C J.Sea surface salinity measurements in the historical database[J].J Geophy Res,2002,107(C12):8019,doi: 10.1029/2000JC000767.

XIE Shang-ping,XIE Qiang,WANG Dong-xiao,et al.Summer upwelling in the South China Sea and its role in regional climate variations[J].J Geophys Res,2003,108:doi: 2003JC001867.

LAGERLOEF G S E.Introduction to the special section:The role of surface salinity on upper ocean dynamics,air sea interaction and climate[J].J Geophys Res,2002,107(C12):8000,doi: 10.1029/2002JC001669.

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