气候变化领域集成服务门户(CCPortal): Unprecedented Surface Chlorophyll Blooms in the Southeastern Arabian Sea During an Extreme Negative Indian Ocean Dipole

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DOI	10.1029/2019GL085026
	Unprecedented Surface Chlorophyll Blooms in the Southeastern Arabian Sea During an Extreme Negative Indian Ocean Dipole
	Thushara V.; Vinayachandran P.N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	Observations of ocean color in the southeastern Arabian Sea (SEAS) during the late boreal summer and fall of 2016 reveal the highest surface chlorophyll concentrations (>1.0 mg m−3) ever reported in the region in the past two decades of the satellite era. Anomalous chlorophyll blooms were triggered by two cold-core eddies, along the periphery of the coastal upwelling zone. Observational evidence suggest that the eddy formation and propagation can be attributed to the local wind forcing and the remote effects originating around Sri Lanka and the southern tip of India (STI) during the extreme negative Indian Ocean Dipole (IOD) of 2016. The eddy-induced anomalous shoaling of thermocline indicates strong upwelling of subsurface nutrients and chlorophyll and enhanced light availability for phytoplankton growth favoring the observed biological response. The study signifies the unprecedented impacts of extreme climatic events on oceanic chlorophyll and the need for better understanding of the associated biophysical interactions. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth sciences; Geophysics; Biological response; Indian Ocean dipole; Indian ocean dipoles; Light availability; Phytoplankton growth; Southeastern arabian seas; Surface chlorophyll; Surface chlorophyll concentration; Chlorophyll; algal bloom; chlorophyll; climate effect; extreme event; growth; Indian Ocean Dipole; light availability; ocean color; phytoplankton; shoaling wave; summer; thermocline; upwelling; wind forcing; Arabian Sea; India; Indian Ocean; Sri Lanka
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170169
作者单位	Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore, India
推荐引用方式 GB/T 7714	Thushara V.,Vinayachandran P.N.. Unprecedented Surface Chlorophyll Blooms in the Southeastern Arabian Sea During an Extreme Negative Indian Ocean Dipole[J],2020,47(13).
APA	Thushara V.,&Vinayachandran P.N..(2020).Unprecedented Surface Chlorophyll Blooms in the Southeastern Arabian Sea During an Extreme Negative Indian Ocean Dipole.Geophysical Research Letters,47(13).
MLA	Thushara V.,et al."Unprecedented Surface Chlorophyll Blooms in the Southeastern Arabian Sea During an Extreme Negative Indian Ocean Dipole".Geophysical Research Letters 47.13(2020).