Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas

doi:10.1175/JPO-D-23-0041.1

CORC > 海洋研究所 > 中国科学院海洋研究所

	Seasonal and Interannual Variability of Fronts and Their Impact on Chlorophyll-a in the Indonesian Seas
	Zhang, Hao-ran 5; Yu, Yi 3,5; Gao, Zhibin 2,4,5; Zhang, Yanwei 4; Ma, Wentao 3,5; Yang, Dezhou 1,5; Yin, Baoshu 1; Wang, Yuntao 5
刊名	JOURNAL OF PHYSICAL OCEANOGRAPHY
	2023-12-01
卷号	53 期号:12 页码:2847-2859
关键词	Atmosphere-ocean interaction Ekman pumping/transport Fronts Upwelling/downwelling Wind stress ENSO
ISSN号	0022-3670
DOI	10.1175/JPO-D-23-0041.1
通讯作者	Wang, Yuntao(yuntao.wang@sio.org.cn)
英文摘要	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.
资助项目	State Key Laboratory of Marine Geology, Tongji University[42176013] ; [MGK202113]
WOS关键词	INDIAN-OCEAN DIPOLE ; SOUTHERN COAST ; SURFACE TEMPERATURE ; WIND VARIABILITY ; JAVA ; THROUGHFLOW ; OSCILLATION ; TRANSPORT ; SUMATRA ; STRESS
WOS研究方向	Oceanography
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:001122243000003
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/184260]
专题	中国科学院海洋研究所
通讯作者	Wang, Yuntao
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China 3.Donghai Lab, Zhoushan, Peoples R China 4.Tongji Univ, Sch Ocean & Earth Sci, Shanghai, Peoples R China 5.Minist Nat Resources, Inst Oceanog 2, Hangzhou, Peoples R China
推荐引用方式 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.