气候变化领域集成服务门户(CCPortal): El Niño-Driven Oxygenation Impacts Peruvian Shelf Iron Supply to the South Pacific Ocean

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DOI	10.1029/2019GL086631
	El Niño-Driven Oxygenation Impacts Peruvian Shelf Iron Supply to the South Pacific Ocean
	Rapp I.; Schlosser C.; Browning T.J.; Wolf F.; Le Moigne F.A.C.; Gledhill M.; Achterberg E.P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:7
英文摘要	Upwelling ocean currents associated with oxygen minimum zones (OMZs) supply nutrients fuelling intense marine productivity. Perturbations in the extent and intensity of OMZs are projected in the future, but it is currently uncertain how this will impact fluxes of redox-sensitive trace metal micronutrients to the surface ocean. Here we report seawater concentrations of Fe, Mn, Co, Cd, and Ni alongside the redox indicator iodide/iodate in the Peruvian OMZ during the 2015 El Niño event. The El Niño drove atypical upwelling of oxygen-enriched water over the Peruvian Shelf, resulting in oxidized iodine and strongly depleted Fe (II), total dissolved Fe, and reactive particulate Fe concentrations relative to non-El Niño conditions. Observations of Fe were matched by the redox-sensitive micronutrients Co and Mn, but not by non-redox-sensitive Cd and Ni. These observations demonstrate that oxygenation of OMZs significantly reduces water column inventories of redox-sensitive micronutrients, with potential impacts on ocean productivity. © 2020. The Authors.
英文关键词	Dissolved oxygen; Explosives; Nutrients; Ocean currents; Oxygen supply; Oxygenation; Productivity; Trace elements; Marine productivity; Oxygen minimum zone; Potential impacts; Redox indicator; Redox sensitives; Seawater concentration; South pacific oceans; Supply nutrients; Iron compounds; concentration (composition); El Nino; iron; oceanic current; oxygen minimum layer; oxygenation; perturbation; redox conditions; trace metal; upwelling; water column; Pacific Ocean; Pacific Ocean (South); Peru
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/170476
作者单位	Marine Biogeochemistry Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Now at Department of Biology, Dalhousie University, Halifax, NS, Canada; Now at Marine Ecology Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Now at Mediterranean Institute of Oceanography, Marseille, France
推荐引用方式 GB/T 7714	Rapp I.,Schlosser C.,Browning T.J.,et al. El Niño-Driven Oxygenation Impacts Peruvian Shelf Iron Supply to the South Pacific Ocean[J],2020,47(7).
APA	Rapp I..,Schlosser C..,Browning T.J..,Wolf F..,Le Moigne F.A.C..,...&Achterberg E.P..(2020).El Niño-Driven Oxygenation Impacts Peruvian Shelf Iron Supply to the South Pacific Ocean.Geophysical Research Letters,47(7).
MLA	Rapp I.,et al."El Niño-Driven Oxygenation Impacts Peruvian Shelf Iron Supply to the South Pacific Ocean".Geophysical Research Letters 47.7(2020).