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学科主题: Limnology; Oceanography
题名: Decadal variability of chlorophyll a in the South China Sea: a possible mechanism
作者: Liu, FF ; Chen, CQ ; Zhan, HG
通讯作者: cqchen@scsio.ac.cn
关键词: South China Sea (SCS) ; decadal variability ; chlorophyll a
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2012
卷: 30, 期:6, 页:1054-1062
部门归属: [Liu Fenfen; Chen Chuqun; Zhan Haigang] Chinese Acad Sci, State Key Lab Oceanog Trop, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Liu Fenfen] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
项目归属: LTO
摘要: Four climatologies on a monthly scale (January, April, May and November) of chlorophyll a within the South China Sea (SCS) were calculated using a Coastal Zone Color Scanner (CZCS) (1979-1983) and the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) (1998-2002). We analyzed decadal variability of chlorophyll a by comparing the products of the two observation periods. The relationships of variability in chlorophyll a with sea surface wind speed (SSW), sea surface temperature (SST), wind stress (WS), and mixed layer depth (MLD) were determined. The results indicate that there is obvious chlorophyll a decadal variability in the SCS. The decadal chlorophyll a presents distinct seasonal variability in characteristics, which may be as a result of various different dynamic processes. The negative chlorophyll a concentration anomaly in January was associated with the warming of SST and a shallower MLD. Generally, there were higher chlorophyll a concentrations in spring during the SeaWiFS period compared with the CZCS period. However, the chlorophyll a concentration exhibits some regional differences during this season, leading to an explanation being diffi cult. The deepened MLD may have contributed to the positive chlorophyll a concentration anomalies from the northwestern Luzon Island to the northeastern region of Vietnam during April and May. The increases of chlorophyll a concentration in northwestern Borneo during May may be because the stronger SSW and higher WS produce a deeper mixed layer and convective mixing, leading to high levels of nutrient concentrations. The higher chlorophyll a off southeastern Vietnam may be associated with the advective transport of the colder water extending from the Karimata Strait to southeastern Vietnam.
语种: 英语
WOS记录号: WOS:000311286500018
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10069
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Liu, FF; Chen, CQ; Zhan, HG.Decadal variability of chlorophyll a in the South China Sea: a possible mechanism,CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2012,30(6):1054-1062
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