Revisiting the Seasonal Evolution of the Indian Ocean Dipole from the Perspective of Process-Based Decomposition | |
Zhang, Guangli3,4; Fan, Hanjie2; Huang, Ke2; Long, Tong3; Song, Wei3; Xie, Qiang1,3 | |
刊名 | JOURNAL OF OCEAN UNIVERSITY OF CHINA |
2023-12-01 | |
卷号 | 22期号:6页码:1453-1463 |
关键词 | Indian Ocean Dipole climate feedback-response analysis method growth rate of the sea surface temperature anomaly seasonally dependent sea surface temperature anomaly water vapor feedback |
ISSN号 | 1672-5182 |
DOI | 10.1007/s11802-023-5361-7 |
英文摘要 | The seasonal phase-locking feature of the Indian Ocean Dipole (IOD) is well documented. However, the seasonality tendency of sea surface temperature anomalies (SSTAs) during the development of the IOD has not been widely investigated. The SSTA tendencies over the two centers of the IOD peak in September-October-November are of different monthly amplitudes. The SSTA tendency over the west pole is small before June-July-August but dramatically increases in July-August-September. Meanwhile, the SSTA tendency over the east pole gradually increases before June-July-August and decreases since then. The growth rate attribution of the SSTAs is achieved by examining the roles of radiative and non-radiative air-sea coupled thermodynamic processes through the climate feedback-response analysis method (CFRAM). The CFRAM results indicate that oceanic dynamic processes largely contribute to the total SSTA tendency for initiating and fueling the IOD SSTAs, similar to previous studies. However, these results cannot explain the monthly amplitudes of SSTA tendency. Four negative feedback processes (cloud radiative feedback, atmospheric dynamic processes, surface sensible, and latent heat flux) together play a damping role opposite to the SSTA tendency. Nevertheless, the sea surface temperature-water vapor feedback shows positive feedback. Specifically, variations in SSTAs can change water vapor concentrations through evaporation, resulting in anomalous longwave radiation that amplifies the initial SSTAs through positive feedback. The effect of water vapor feedback is well in-phase with the monthly amplitudes of SSTA tendency, suggesting that the water vapor feedback might modulate the seasonally dependent SSTA tendency during the development of the IOD. |
资助项目 | Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0102] ; National Natural Science Foundation of China[42176026] ; National Postdoctoral Program of Innovative Talents[BX2021324] |
WOS关键词 | INDIVIDUAL FEEDBACK PROCESSES ; MODE EVENTS ; VARIABILITY ; FRAMEWORK |
WOS研究方向 | Oceanography |
语种 | 英语 |
出版者 | OCEAN UNIV CHINA |
WOS记录号 | WOS:001110507300008 |
资助机构 | Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; National Natural Science Foundation of China ; National Postdoctoral Program of Innovative Talents |
内容类型 | 期刊论文 |
源URL | [http://ir.idsse.ac.cn/handle/183446/10807] |
专题 | 深海科学研究部_海洋环流观测与数值模拟研究室 |
通讯作者 | Zhang, Guangli |
作者单位 | 1.Pilot Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 4.Sun Yat Sen Univ, Sch Marine Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Guangli,Fan, Hanjie,Huang, Ke,et al. Revisiting the Seasonal Evolution of the Indian Ocean Dipole from the Perspective of Process-Based Decomposition[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2023,22(6):1453-1463. |
APA | Zhang, Guangli,Fan, Hanjie,Huang, Ke,Long, Tong,Song, Wei,&Xie, Qiang.(2023).Revisiting the Seasonal Evolution of the Indian Ocean Dipole from the Perspective of Process-Based Decomposition.JOURNAL OF OCEAN UNIVERSITY OF CHINA,22(6),1453-1463. |
MLA | Zhang, Guangli,et al."Revisiting the Seasonal Evolution of the Indian Ocean Dipole from the Perspective of Process-Based Decomposition".JOURNAL OF OCEAN UNIVERSITY OF CHINA 22.6(2023):1453-1463. |
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