气候变化领域集成服务门户(CCPortal): Nitrogen isotopic constraints on nutrient transport to the upper ocean

CCPortal

DOI	10.1038/s41561-021-00836-8
	Nitrogen isotopic constraints on nutrient transport to the upper ocean
	Fripiat F.; Martínez-García A.; Marconi D.; Fawcett S.E.; Kopf S.H.; Luu V.H.; Rafter P.A.; Zhang R.; Sigman D.M.; Haug G.H.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:11
英文摘要	Ocean circulation supplies the surface ocean with the nutrients that fuel global ocean productivity. However, the mechanisms and rates of water and nutrient transport from the deep ocean to the upper ocean are poorly known. Here, we use the nitrogen isotopic composition of nitrate to place observational constraints on nutrient transport from the Southern Ocean surface into the global pycnocline (roughly the upper 1.2 km), as opposed to directly from the deep ocean. We estimate that 62 ± 5% of the pycnocline nitrate and phosphate originate from the Southern Ocean. Mixing, as opposed to advection, accounts for most of the gross nutrient input to the pycnocline. However, in net, mixing carries nutrients away from the pycnocline. Despite the quantitative dominance of mixing in the gross nutrient transport, the nutrient richness of the pycnocline relies on the large-scale advective flow, through which nutrient-rich water is converted to nutrient-poor surface water that eventually flows to the North Atlantic. © 2021, The Author(s).
语种	英语
scopus关键词	circulation; dominance; global ocean; isotopic composition; surface water; upper ocean; Atlantic Ocean; Atlantic Ocean (North); Southern Ocean
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250836
作者单位	Max Planck Institute for Chemistry, Mainz, Germany; Department of Geosciences, Environment and Society, Université Libre de Bruxelles, Brussels, Belgium; Department of Geosciences, Princeton University, Princeton, NJ, United States; Department of Oceanography, University of Cape Town, Rondebosch, South Africa; Marine and Antarctic Research Centre for Innovation and Sustainability (MARIS), University of Cape Town, Rondebosch, South Africa; Department of Geological Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Earth System Sciences, University of California, Irvine, CA, United States; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
推荐引用方式 GB/T 7714	Fripiat F.,Martínez-García A.,Marconi D.,et al. Nitrogen isotopic constraints on nutrient transport to the upper ocean[J],2021,14(11).
APA	Fripiat F..,Martínez-García A..,Marconi D..,Fawcett S.E..,Kopf S.H..,...&Haug G.H..(2021).Nitrogen isotopic constraints on nutrient transport to the upper ocean.Nature Geoscience,14(11).
MLA	Fripiat F.,et al."Nitrogen isotopic constraints on nutrient transport to the upper ocean".Nature Geoscience 14.11(2021).