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Decadal variability of chlorophyll a in the South China Sea: a possible mechanism
Liu, FF; Chen, CQ; Zhan, HG;
AbstractFour 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.
Department[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
KeywordSouth China Sea (Scs) Decadal Variability Chlorophyll a
Subject AreaLimnology ; Oceanography
Funding ProjectLTO
WOS IDWOS:000311286500018
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Liu, FF,Chen, CQ,Zhan, HG,et al. Decadal variability of chlorophyll a in the South China Sea: a possible mechanism[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2012,30(6):1054-1062.
APA Liu, FF,Chen, CQ,Zhan, HG,& variability of chlorophyll a in the South China Sea: a possible mechanism.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,30(6),1054-1062.
MLA Liu, FF,et al."Decadal variability of chlorophyll a in the South China Sea: a possible mechanism".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 30.6(2012):1054-1062.
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