Knowledge Management System Of Institute of Oceanology, Chinese Academy of Sciences
| Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas | |
| Zhang, Hao-ran1; Yu, Yi1,2; Gao, Zhibin1,3,5; Zhang, Yanwei3; Ma, Wentao1,2; Yang, Dezhou1,4; Yin, Baoshu4; Wang, Yuntao1 | |
| 2023-12-01 | |
| Source Publication | JOURNAL OF PHYSICAL OCEANOGRAPHY
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| ISSN | 0022-3670 |
| Volume | 53Issue:12Pages:2847-2859 |
| Corresponding Author | Wang, Yuntao(yuntao.wang@sio.org.cn) |
| Abstract | The spatiotemporal variability of oceanic fronts in the Indonesian seas was investigated using high-resolution satellite observations. The study aimed to understand the underlying mechanism driving these fronts and their impact on chlorophyll-a variability. A high value of frontal probability was found near the coasts of major islands, exhibiting a distinct seasonal cycle with peaks occurrences during austral winter. The distribution variability of chlorophyll-a was generally consistent with the presence of active frontal zones, although a significantly positive relationship between fronts and chlorophyll-a was limited to only some specific areas, e.g., south Java Island and the Celebes Sea. Wind-driven upwelling played a major role in front generation in the Java upwelling region and enhanced frontal activity can promote the growth of phytoplankton, leading to higher chlorophyll-a. Furthermore, the study demonstrated that wind patterns preceded variations in front probability and chlorophyll-a by approximately two months. This lag suggests that the spatiotemporal variability of fronts and chlorophyll-a in this region is primarily influenced by the monsoon system. In addition, the sea surface temperature (SST) simultaneously modulated the chlorophyll-a variability. Negative SST anomalies were typically associated with positive anomalies in front probability the chlorophyll-a in most areas. Notably, the interannual variability of fronts and chlorophyll-a are prominent in the Java upwelling region. During El Nino years, this region experienced an enhanced monsoon, resulting in a negative SST anomaly alongside positive anomalies in front probability and chlorophyll-a. A comprehensive description and underlying dynamics of frontal activity in the Indonesian seas are provided by this study. The findings are helpful to delineate the variability in chlorophyll-a, thereby facilitating the future understanding of local primary production and the carbon cycle. SIGNIFICANCE STATEMENT: As typical mesoscale processes, oceanic fronts have significant impacts on biological processes and fisheries in marginal seas. The complex spatiotemporal variability of fronts and their effects on biological processes in the Indonesian seas remain poorly understood. This study aimed to address this knowledge gap by investigating the seasonal and interannual variability of fronts and their influence on chlorophyll-a, a key indicator of phytoplankton biomass and primary productivity. The study identified a high frontal probability in south Java Island during austral winter and El Nino years. Wind-driven upwelling was found to be a major factor in front generation and promoting phytoplankton growth. The findings of this study will improve the theoretical knowledge of regional dynamics, local primary production, and the carbon cycle in the Indonesian seas, benefiting fisheries management and ecosystem conservation efforts. |
| Keyword | Atmosphere-ocean interaction Ekman pumping/transport Fronts Upwelling/downwelling Wind stress ENSO |
| DOI | 10.1175/JPO-D-23-0041.1 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | State Key Laboratory of Marine Geology, Tongji University[42176013] ; [MGK202113] |
| WOS Research Area | Oceanography |
| WOS Subject | Oceanography |
| WOS ID | WOS:001122243000003 |
| Publisher | AMER METEOROLOGICAL SOC |
| WOS Keyword | INDIAN-OCEAN DIPOLE ; SOUTHERN COAST ; SURFACE TEMPERATURE ; WIND VARIABILITY ; JAVA ; THROUGHFLOW ; OSCILLATION ; TRANSPORT ; SUMATRA ; STRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/184261 |
| Collection | 中国科学院海洋研究所 |
| Corresponding Author | Wang, Yuntao |
| Affiliation | 1.Minist Nat Resources, Inst Oceanog 2, Hangzhou, Peoples R China 2.Donghai Lab, Zhoushan, Peoples R China 3.Tongji Univ, Sch Ocean & Earth Sci, Shanghai, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 5.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Hao-ran,Yu, Yi,Gao, Zhibin,et al. Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2023,53(12):2847-2859. |
| APA | Zhang, Hao-ran.,Yu, Yi.,Gao, Zhibin.,Zhang, Yanwei.,Ma, Wentao.,...&Wang, Yuntao.(2023).Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas.JOURNAL OF PHYSICAL OCEANOGRAPHY,53(12),2847-2859. |
| MLA | Zhang, Hao-ran,et al."Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas".JOURNAL OF PHYSICAL OCEANOGRAPHY 53.12(2023):2847-2859. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| phoc-JPO-D-23-0041.1（7114KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | View | |
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