气候变化领域集成服务门户(CCPortal): Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean

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DOI	10.5194/tc-14-1385-2020
	Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean
	Jena B.; N. Pillai A.
发表日期	2020
ISSN	19940416
起始页码	1385
结束页码	1398
卷号	14 期号:4
英文摘要	The appearance of phytoplankton blooms within sea ice cover is of high importance considering the upper ocean primary production that controls the biological pump, with implications for atmospheric CO2 and global climate. Satellite-derived chlorophyll a concentration showed unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean, with chlorophyll a reaching up to 4.67 mg m -3 during 2017. Multi-satellite data indicated that the bloom appeared for the first time since the entire mission records started in 1978. An Argo float located in the polynya edge provided evidence of bloom conditions in austral spring 2017 (chlorophyll a up to 5.47 mg m -3) compared to the preceding years with prevailing low chlorophyll a. The occurrence of bloom was associated with the supply of nutrients into the upper ocean through Ekman upwelling (driven by wind stress curl and cyclonic ocean eddies) and improved light conditions of up to 61.9 einstein m -2 d -1. The net primary production from the Aqua Moderate Resolution Imaging Spectroradiometer chlorophyll-based algorithm showed that the Maud Rise polynya was as productive as the Antarctic coastal polynyas, with carbon fixation rates reaching up to 415.08 mg C m -2 d -1. The study demonstrates how the phytoplankton in the Southern Ocean (specifically over the shallow bathymetric region) would likely respond in the future under warming climate conditions and continued melting of Antarctic sea ice. © 2019 BioMed Central Ltd.. All rights reserved.
英文关键词	algal bloom; algorithm; carbon fixation; Ekman layer; Ekman pumping; MODIS; net primary production; phytoplankton; polynya; satellite data; sea ice; wind stress; Maud Rise; Southern Ocean; Weddell Sea
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202114
作者单位	ESSO - National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India, Vasco da Gama, India
推荐引用方式 GB/T 7714	Jena B.,N. Pillai A.. Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean[J],2020,14(4).
APA	Jena B.,&N. Pillai A..(2020).Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean.Cryosphere,14(4).
MLA	Jena B.,et al."Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean".Cryosphere 14.4(2020).