气候变化领域集成服务门户(CCPortal): The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean

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DOI	10.1029/2019MS001805
	The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean
	Uchida T.; Balwada D.; Abernathey R.; McKinley G.; Smith S.; Lévy M.
发表日期	2019
ISSN	19422466
起始页码	3934
结束页码	3958
卷号	11 期号:12
英文摘要	Biological productivity in the Southern Ocean is limited by iron availability. Previous studies of iron supply have focused on mixed-layer entrainment and diapycnal fluxes. However, the Southern Ocean is a region highly energetic mesoscale and submesoscale turbulence. Here we investigate the role of eddies in supplying iron to the euphotic zone, using a flat-bottom zonally re-entrant model, configured to represent the Antarctic Circumpolar Current region, that is coupled to a biogeochemical model with a realistic seasonal cycle. Eddies are admitted or suppressed by changing the model's horizontal resolution. We utilize cross spectral analysis and the generalized Omega equation to temporally and spatially decompose the vertical transport attributable to mesoscale and submesoscale motions. Our results suggest that the mesoscale vertical fluxes provide a first-order pathway for transporting iron across the mixing-layer base, where diapycnal mixing is weak, and must be included in modeling the open-Southern Ocean iron budget. ©2019. The Authors.
语种	英语
scopus关键词	Budget control; Mixing; Ocean currents; Spectrum analysis; Antarctic circumpolar current regions; Biogeochemical modeling; Biological productivity; Cross-spectral analysis; Diapycnal mixing; Horizontal resolution; Iron availability; Vertical transports; Iron; biogeochemical cycle; biological production; entrainment; euphotic zone; flux measurement; iron; mesoscale eddy; mixed layer; mixing ratio; spectral analysis; turbulence; Antarctic Circumpolar Current; Southern Ocean; Southern Ocean
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156809
作者单位	Department of Earth and Environmental Sciences, Columbia University, New York City, NY, United States; Center for Atmosphere Ocean Science, Courant Institute of Mathematical Sciences, New York University, New York City, NY, United States; Division of Ocean and Climate Physics, Lamont-Doherty Earth Observatory, Palisades, NY, United States; Laboratoire d'Océanographie et du Climat, Institut Pierre Simon-Laplace, Paris, France
推荐引用方式 GB/T 7714	Uchida T.,Balwada D.,Abernathey R.,et al. The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean[J],2019,11(12).
APA	Uchida T.,Balwada D.,Abernathey R.,McKinley G.,Smith S.,&Lévy M..(2019).The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean.Journal of Advances in Modeling Earth Systems,11(12).
MLA	Uchida T.,et al."The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean".Journal of Advances in Modeling Earth Systems 11.12(2019).