气候变化领域集成服务门户(CCPortal): An Anomalous Decline of the Spring Bloom Chlorophyll Concentration in the Central Pacific is an Early Indicator of El Niño

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DOI	10.1007/s12524-024-01848-8
	An Anomalous Decline of the Spring Bloom Chlorophyll Concentration in the Central Pacific is an Early Indicator of El Niño
	Manche, Shiva Shankar; Swapna, M.; Mishra, Shashank Kumar; Rajesh, S.; Nayak, Rabindra Kumar; Ramana, M. V.; Bothale, Rajashree V.; Chauhan, Prakash
发表日期	2024
ISSN	0255-660X
EISSN	0974-3006
起始页码	52
结束页码	5
卷号	52 期号:5
英文摘要	El Nino Southern Oscillation, a global climate phenomenon, occurs in the tropical Pacific with an anomalous warming phase (El Nino) and a cooling phase (La Nina) spanning for 2-5 years. A substantial decline of Nino3.4 region's spring bloom chlorophyll-a concentration (Chl-a) is an intrinsic characteristic of the central Pacific during the El Nino onset period, which has been considered as a predictor of the El Nino by earlier studies. This study investigated the concept, a marked decline of spring bloom Chl-a as the predictor of the El Nino, using satellite-measured Chl-a from MODIS Aqua for the period 2003-2023 in relation to the Oceanic Nino Index (ONI) and subsurface properties. It revealed that Chl-a exhibits a significant inverse relationship with ONI during past El Nino events. An intense, continuous decreasing phase of Chl-a during the spring season (February-April) of 2023 may indicate the onset of El Nino. The decline of the spring bloom Chl-a concentration has been explained as the response to the weakening of the upwelling strength in the study domain and associated nutrient depletion in the euphotic zone.
英文关键词	Chlorophyll-a; MODIS; El Nino; La Nina; Pacific Ocean; Climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
WOS类目	Environmental Sciences ; Remote Sensing
WOS记录号	WOS:001197346100001
来源期刊	JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295717
作者单位	Department of Space (DoS), Government of India; Indian Space Research Organisation (ISRO); National Remote Sensing Centre (NRSC)
推荐引用方式 GB/T 7714	Manche, Shiva Shankar,Swapna, M.,Mishra, Shashank Kumar,et al. An Anomalous Decline of the Spring Bloom Chlorophyll Concentration in the Central Pacific is an Early Indicator of El Niño[J],2024,52(5).
APA	Manche, Shiva Shankar.,Swapna, M..,Mishra, Shashank Kumar.,Rajesh, S..,Nayak, Rabindra Kumar.,...&Chauhan, Prakash.(2024).An Anomalous Decline of the Spring Bloom Chlorophyll Concentration in the Central Pacific is an Early Indicator of El Niño.JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING,52(5).
MLA	Manche, Shiva Shankar,et al."An Anomalous Decline of the Spring Bloom Chlorophyll Concentration in the Central Pacific is an Early Indicator of El Niño".JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING 52.5(2024).