气候变化领域集成服务门户(CCPortal): Tropical storms trigger phytoplankton blooms in the deserts of north Indian Ocean

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DOI	10.1038/s41612-021-00166-x
	Tropical storms trigger phytoplankton blooms in the deserts of north Indian Ocean
	Kuttippurath J.; Sunanda N.; Martin M.V.; Chakraborty K.
发表日期	2021
ISSN	23973722
卷号	4 期号:1
英文摘要	As the phytoplanktons consume carbon dioxide, they significantly influence the global carbon cycle and thus, the global temperature by modifying sea surface temperature. Studies on the changes in chlorophyll–a (Chl-a) amount are therefore, key for understanding the changes in ocean productivity, global carbon budget and climate. Here, we report the cyclone-induced Chl-a blooms in the North Indian Ocean (NIO) using the ocean colour measurements from satellites for the past two decades (1997–2019). The average Chl-a concentration associated with cyclone-induced phytoplankton blooms is around 1.65 mg/m3, which is about 20–3000% higher than the average open ocean or pre-cyclone Chl-a levels, depending on the cyclones. In general, the phytoplankton bloom is inversely related to the translational speed (TS) of cyclones, as slower storms make intense Chl-a blooms. In addition to wind-induced upwelling and TS of cyclones, cold-core eddies also play a major role in enhancement of Chl-a when the cyclones encounter eddies on their track. It is observed that the cyclone-induced phytoplankton blooms are larger in the La Niña years than that in the El Niño and normal years. The amplitude of bloom is higher for the positive IOD years in Bay of Bengal, but for negative IOD years in Arabian Sea. Henceforth, this study provides new insights into the life cycle, seasonal changes, and magnitude of the cyclone-induced primary production, remote forcing and greenhouse mediated climate change in NIO. © 2021, The Author(s).
语种	英语
scopus关键词	carbon cycle; carbon dioxide; chlorophyll a; concentration (composition); desert; phytoplankton; storm; tropical cyclone; Bay of Bengal; Indian Ocean; Indian Ocean (North); Satellites
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178002
作者单位	CORAL, Indian Institute of Technology Kharagpur, Kharagpur, India; National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India; Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Hyderabad, India
推荐引用方式 GB/T 7714	Kuttippurath J.,Sunanda N.,Martin M.V.,et al. Tropical storms trigger phytoplankton blooms in the deserts of north Indian Ocean[J],2021,4(1).
APA	Kuttippurath J.,Sunanda N.,Martin M.V.,&Chakraborty K..(2021).Tropical storms trigger phytoplankton blooms in the deserts of north Indian Ocean.npj Climate and Atmospheric Science,4(1).
MLA	Kuttippurath J.,et al."Tropical storms trigger phytoplankton blooms in the deserts of north Indian Ocean".npj Climate and Atmospheric Science 4.1(2021).