Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Observed Deep-Reaching Signatures of the Madden-Julian Oscillation in the Ocean Circulation of the Western Tropical Pacific | |
Song, Lina1,2,3 ; Li, Yuanlong1,2,3; Liu, Chuanyu1,2,3; Wang, Fan1,2,3; Wang, Jianing1,2,3
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| 2019-12-30 | |
| Source Publication | GEOPHYSICAL RESEARCH LETTERS
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| ISSN | 0094-8276 |
| Pages | 10 |
| Corresponding Author | Wang, Fan(fwang@qdio.ac.cn) |
| Abstract | Prominent intraseasonal variability (ISV) of ocean currents was detected by two subsurface moorings deployed at 140 degrees E, 2 degrees N, and 4.7 degrees N during 2014-2018 and shown to be largely induced by westerly wind bursts (WWBs) associated with passages of Madden-Julian oscillations (MJOs). The North Equatorial Countercurrent between 60 and 200 m is enhanced (attenuated) by 6-8 cm/s prior (subsequent) to the WWB. Current anomalies below 300 m are as large as 2-3 cm/s, close in magnitude to the mean velocities of the North Equatorial Subsurface Current and North Subsurface Countercurrent. The ISV in the upper 600 m shows a vertical dipole structure at 2 degrees N and vertically coherent anomalies at 4.7 degrees N. Further analysis combining satellite data reveals local recirculation structures generated by wind-forced Rossby waves. Ocean model experiments confirm the importance of the MJO's wind forcing in causing these subsurface ocean ISVs. |
| Keyword | subsurface mooring observation intraseasonal variability of zonal currents the western tropical Pacific Madden-Julian oscillation the North Subsurface Countercurrent the North Equatorial Subsurface Current |
| DOI | 10.1029/2019GL085606 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41730534] ; National Natural Science Foundation of China[41706018] ; National Natural Science Foundation of China[91958204] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01] ; Scientific and Technological Innovation Project[2016ASKJ12] ; Key Research Program of Frontier Sciences[QYZDB-SSW-DQC030] ; Aoshan Talents Program[2017ASTCP-ES03] ; NSFC Innovative Group Grant[41421005] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; National Key Research and Development Program[2017YFA0603201] |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000504818600001 |
| Publisher | AMER GEOPHYSICAL UNION |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/164119 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Wang, Fan |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Song, Lina,Li, Yuanlong,Liu, Chuanyu,et al. Observed Deep-Reaching Signatures of the Madden-Julian Oscillation in the Ocean Circulation of the Western Tropical Pacific[J]. GEOPHYSICAL RESEARCH LETTERS,2019:10. |
| APA | Song, Lina,Li, Yuanlong,Liu, Chuanyu,Wang, Fan,&Wang, Jianing.(2019).Observed Deep-Reaching Signatures of the Madden-Julian Oscillation in the Ocean Circulation of the Western Tropical Pacific.GEOPHYSICAL RESEARCH LETTERS,10. |
| MLA | Song, Lina,et al."Observed Deep-Reaching Signatures of the Madden-Julian Oscillation in the Ocean Circulation of the Western Tropical Pacific".GEOPHYSICAL RESEARCH LETTERS (2019):10. |
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