Vertical Structure of the Upper-Indian Ocean Thermal Variability
文献类型：期刊论文
| 作者 | Li, Yuanlong1,2,5; Han, Weiqing3,4; Wang, Fan1,2,5 ; Zhang, Lei3,4; Duan, Jing1,2,5
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| 刊名 | JOURNAL OF CLIMATE
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| 出版日期 | 2020-09-01 |
| 卷号 | 33期号:17页码:7233-7253 |
| ISSN号 | 0894-8755 |
| DOI | 10.1175/JCLI-D-19-0851.1 |
| 通讯作者 | Li, Yuanlong(liyuanlong@qdio.ac.cn) |
| 英文摘要 | Multi-time-scale variabilities of the Indian Ocean (IO) temperature over 0-700m are revisited from the perspective of vertical structure. Analysis of historical data for 1955-2018 identifies two dominant types of vertical structures that account for respectively 70.5% and 21.2% of the total variance on interannual-to-interdecadal time scales with the linear trend and seasonal cycle removed. The leading type manifests as vertically coherent warming/cooling with the maximal amplitude at similar to 100 m and exhibits evident interdecadal variations. The second type shows a vertical dipole structure between the surface (0-60 m) and subsurface (60-400 m) layers and interannual-to-decadal fluctuations. Ocean model experiments were performed to gain insights into underlying processes. The vertically coherent, basinwide warming/cooling of the IO on an interdecadal time scale is caused by changes of the Indonesian Throughflow (ITF) controlled by Pacific climate and anomalous surface heat fluxes partly originating from external forcing. Enhanced changes in the subtropical southern IO arise from positive air-sea feedback among sea surface temperature, winds, turbulent heat flux, cloud cover, and shortwave radiation. Regarding dipole-type variability, the basinwide surface warming is induced by surface heat flux forcing, and the subsurface cooling occurs only in the eastern IO. The cooling in the southeast IO is generated by the weakened ITF, whereas that in the northeast IO is caused by equatorial easterly winds through upwelling oceanic waves. Both El Nino- Southern Oscillation (ENSO) and IO dipole (IOD) events are favorable for the generation of such vertical dipole anomalies. |
| 资助项目 | National Key R&D Program of China[2019YFA0606702] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China (NSFC)[41776001] ; National Natural Science Foundation of China (NSFC)[41806001] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01] ; NSF-AGS[1446480] ; NSF-OCE[1658132] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000615097000001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/169730]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Li, Yuanlong |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Xian, Peoples R China 3.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuanlong,Han, Weiqing,Wang, Fan,et al. Vertical Structure of the Upper-Indian Ocean Thermal Variability[J]. JOURNAL OF CLIMATE,2020,33(17):7233-7253. |
| APA | Li, Yuanlong,Han, Weiqing,Wang, Fan,Zhang, Lei,&Duan, Jing.(2020).Vertical Structure of the Upper-Indian Ocean Thermal Variability.JOURNAL OF CLIMATE,33(17),7233-7253. |
| MLA | Li, Yuanlong,et al."Vertical Structure of the Upper-Indian Ocean Thermal Variability".JOURNAL OF CLIMATE 33.17(2020):7233-7253. |
入库方式： OAI收割
来源：海洋研究所
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