Interannual variability of sea surface chlorophyll a in the southern tropical Indian Ocean: Local versus remote forcing
文献类型：期刊论文
| 作者 | Ma, Xueying1 ; Chen, Gengxin1,4; Li, Yuanlong2,3; Zeng, Lili1
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| 刊名 | DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 190页码:13 |
| ISSN号 | 0967-0637 |
| 关键词 | Surface chlorophyll a Interannual variability Thermocline dynamics Southern tropical indian ocean Ekman pumping Rossby waves |
| DOI | 10.1016/j.dsr.2022.103914 |
| 通讯作者 | Chen, Gengxin(chengengxin@scsio.ac.cn) |
| 英文摘要 | Phytoplankton are crucial to marine ecosystems and the global carbon cycle. This study investigates the char-acteristics and causes of the interannual variation of the surface chlorophyll a (chl a) in the southern tropical Indian Ocean (STIO). We find that in addition to the Seychelles-Chagos thermocline ridge (SCTR) upwelling zone in the southwestern basin, large interannual variability also shows up in the southeastern tropical Indian Ocean (SETIO; 6 degrees-18 degrees S, 70 degrees-92 degrees E). The chl a in the SCTR shows two dominant periods of four years and two years, whereas it shows a dominant period of six years and a weaker period of three years in the SETIO. Surface wind forcing anomalies within the STIO, but not the Indonesian throughflow, cause the interannual chl a anomaly. In the SETIO region, the thermocline dynamics control the chl a variation via a combination of equal contributions from local Ekman pumping and remote Rossby waves generated by the wind stress curl from the east. In the SCTR region, the thermocline dynamics explain only about 67% of the chl a variation, with a larger contribution from the remotely generated Rossby waves than local Ekman pumping. The circulation in the western basin also contributes to the chl a variation by transporting western equatorial chl a to this region during the boreal summer-fall. Both the Indian Ocean Dipole and the El Nino-Southern Oscillation act to modulate the chl a variation in the STIO. They make comparable contributions in the SETIO, while the Indian Ocean Dipole plays a more important role in the SCTR. |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA 20060502] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[41976016] ; National Natural Science Foundation of China[42076021] ; Youth Innovation Promotion Association CAS[Y2021093] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515011534] ; State Key Laboratory of Tropical Oceanography[LTOZZ2002] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000883771400003 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/180304]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Chen, Gengxin |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Xueying,Chen, Gengxin,Li, Yuanlong,et al. Interannual variability of sea surface chlorophyll a in the southern tropical Indian Ocean: Local versus remote forcing[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2022,190:13. |
| APA | Ma, Xueying,Chen, Gengxin,Li, Yuanlong,&Zeng, Lili.(2022).Interannual variability of sea surface chlorophyll a in the southern tropical Indian Ocean: Local versus remote forcing.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,190,13. |
| MLA | Ma, Xueying,et al."Interannual variability of sea surface chlorophyll a in the southern tropical Indian Ocean: Local versus remote forcing".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 190(2022):13. |
入库方式： OAI收割
来源：海洋研究所
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