Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Interannual variability of the Indonesian Throughflow: The salinity effect | |
Hu, Shijian1,2,3; Sprintall, Janet2 | |
2016-04-01 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS |
卷号 | 121期号:4页码:2596-2615 |
文章类型 | Article |
摘要 | The Indonesian Throughflow (ITF) region possesses strong mixing and experiences significant freshwater input, but the role of salinity variability in the Indonesian Seas remains unclear. The goal of this study is to understand how salinity variability influences the ITF transport on interannual time scales. The ITF transport is calculated using observations and assimilation data sets and verified using direct ITF transport estimates. We find that the halosteric component of the ITF transport contributes (36 +/- 7)% of the total ITF variability, in contrast to (63 +/- 6)% by the thermosteric component. Thus, while not dominant, this result nonetheless implies that the salinity variability in the Indonesian Seas is of remarkable importance in determining the interannual variability of ITF transport. Correlation analysis indicates that the interannual variability of the total ITF transport is mainly influenced by the El Nino-Southern Oscillation (ENSO) rather than the Indian Ocean Dipole. Under the ENSO cycle, the Walker Circulation shifts longitudinally resulting in fluctuations in precipitation over the Indonesian Seas that modulates salinity and subsequently influences the interannual variability of ITF transport. This result signals the importance of precipitation and the subsequent salinity effect in determining the interannual variability of the ITF transport. The role of wind forcing and oceanic planetary waves is also revisited using this newly calculated ITF transport series. ENSO-related wind forcing is found to modulate the ITF transport via Rossby waves through the wave guide in the Indonesian Seas, which is in agreement with previous studies. |
DOI | 10.1002/2015JC011495 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000383462300027 |
引用统计 | |
文献类型 | 期刊论文 |
版本 | 出版稿 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/135777 |
专题 | 海洋环流与波动重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Wave, Qingdao, Peoples R China 2.Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92103 USA 3.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China |
第一作者单位 | 中国科学院海洋研究所 |
推荐引用方式 GB/T 7714 | Hu, Shijian,Sprintall, Janet. Interannual variability of the Indonesian Throughflow: The salinity effect[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2016,121(4):2596-2615. |
APA | Hu, Shijian,&Sprintall, Janet.(2016).Interannual variability of the Indonesian Throughflow: The salinity effect.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,121(4),2596-2615. |
MLA | Hu, Shijian,et al."Interannual variability of the Indonesian Throughflow: The salinity effect".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 121.4(2016):2596-2615. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Interannual variabil(13766KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 |
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