On contributions by wind-induced mixing and eddy pumping to interannual chlorophyll variability during different ENSO phases in the northern South China Sea

doi:10.1002/lno.11055

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	On contributions by wind-induced mixing and eddy pumping to interannual chlorophyll variability during different ENSO phases in the northern South China Sea
	Zeng, Lili ; Xiu, Peng ; Dai, Minhan 2; Chai, Fei 1,4; Zhou, Kuanbo 2; Du, Chuanjun 2
刊名	LIMNOLOGY AND OCEANOGRAPHY
	2019
卷号	64 期号:2 页码:503
ISSN号	0024-3590
DOI	10.1002/lno.11055
英文摘要	The chlorophyll in the northern South China Sea (NSCS) shows strong interannual variability between different phases of the El Nino-Southern Oscillation (ENSO), primarily due to the influence from Kuroshio intrusion. Chlorophyll observations also reveal that significant year-to-year variation remains in the same ENSO phase, but its controlling mechanism is unknown. In this study, we examined driving mechanisms for such regional ecosystem variability on a year-to-year timescale. Using observational data and modeling results, we found that both cyclonic eddies (CEs) and wind-induced mixing affect phytoplankton variability, but the former is the dominant factor regulating the interannual variability of chlorophyll during La Nina years, while the latter becomes the dominant one during El Nino years. The underlying mechanisms leading to the contrast in biological responses are attributable to changes in background nutricline depth and mixed-layer depth (MLD) during different ENSO phases. During La Nina, both thermocline and nutricline are deepened in the NSCS. Thus, wind mixing is less effective in non-eddy areas due to the deepened nutricline, while the CE-induced subsurface nutrient anomaly associated with increased MLD is able to control the interannual variability of chlorophyll. During El Nino, wind-induced mixing is more effective than CEs because the surface wind can influence a larger area.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17758]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
作者单位	1.State Ocean Adm, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou, Zhejiang, Peoples R China 2.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China 3.Univ Maine, Sch Marine Sci, Orono, ME USA 4.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Lili,Xiu, Peng,Dai, Minhan,et al. On contributions by wind-induced mixing and eddy pumping to interannual chlorophyll variability during different ENSO phases in the northern South China Sea[J]. LIMNOLOGY AND OCEANOGRAPHY,2019,64(2):503, 514.
APA	Zeng, Lili,Xiu, Peng,Dai, Minhan,Chai, Fei,Zhou, Kuanbo,&Du, Chuanjun.(2019).On contributions by wind-induced mixing and eddy pumping to interannual chlorophyll variability during different ENSO phases in the northern South China Sea.LIMNOLOGY AND OCEANOGRAPHY,64(2),503.
MLA	Zeng, Lili,et al."On contributions by wind-induced mixing and eddy pumping to interannual chlorophyll variability during different ENSO phases in the northern South China Sea".LIMNOLOGY AND OCEANOGRAPHY 64.2(2019):503.