Wintertime Phytoplankton Blooms in the Western Equatorial Indian Ocean Associated With the Madden-Julian Oscillation
文献类型：期刊论文
| 作者 | Liao, XM; Du, Y; Zhan, HG; Wang, TY; Feng, M; duyan@scsio.ac.cn |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2018 |
| 卷号 | 122期号:12页码:9855-9869 |
| 关键词 | Phytoplankton Bloom Western Equatorial Indian Ocean Upwelling Ocean Mixing Madden-julian Oscillation |
| 英文摘要 | This study investigated boreal wintertime phytoplankton blooms in the western equatorial Indian Ocean (WEIO) and the underlying physical mechanisms. The Sea viewing Wide field of View sensor (SeaWiFS) chlorophyll-a (Chla) concentrations show that phytoplankton blooms occur in the WEIO during December-March. The development of these blooms is not only a seasonal process but also consists of 2-3 intraseasonal events induced by the Madden-Julian Oscillation (MJO). During a typical intraseasonal event, enhanced cross-equatorial wind induces strong upwelling and ocean mixing, thus increasing the supply of nutrients to the surface in equatorial regions. Argo profiles clearly show various responses to the intraseasonal wind bursts, including shoaling of the thermocline and deepening of the mixed layer. Further analysis reveals that the former is the dominant mechanism for the blooms along the equator, while the latter controls the high Chla concentrations off the coast of Somalia. Surface ocean circulations not only account for the blooms south of the equator but also modulate the thermocline depth in the WEIO. The shallower thermocline during the early period of the northeast monsoon season provides favorable conditions for a stronger Chla response to intraseasonal forcing. |
| 学科主题 | Oceanography |
| 资助项目 | LTO |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17114]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 通讯作者 | duyan@scsio.ac.cn |
| 推荐引用方式 GB/T 7714 | Liao, XM,Du, Y,Zhan, HG,et al. Wintertime Phytoplankton Blooms in the Western Equatorial Indian Ocean Associated With the Madden-Julian Oscillation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,122(12):9855-9869. |
| APA | Liao, XM,Du, Y,Zhan, HG,Wang, TY,Feng, M,&duyan@scsio.ac.cn.(2018).Wintertime Phytoplankton Blooms in the Western Equatorial Indian Ocean Associated With the Madden-Julian Oscillation.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,122(12),9855-9869. |
| MLA | Liao, XM,et al."Wintertime Phytoplankton Blooms in the Western Equatorial Indian Ocean Associated With the Madden-Julian Oscillation".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 122.12(2018):9855-9869. |
入库方式： OAI收割
来源：南海海洋研究所
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