气候变化领域集成服务门户(CCPortal): The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean

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DOI	10.1029/2019JC015920
	The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean
	Charette M.A.; Kipp L.E.; Jensen L.T.; Dabrowski J.S.; Whitmore L.M.; Fitzsimmons J.N.; Williford T.; Ulfsbo A.; Jones E.; Bundy R.M.; Vivancos S.M.; Pahnke K.; John S.G.; Xiang Y.; Hatta M.; Petrova M.V.; Heimbürger-Boavida L.-E.; Bauch D.; Newton R.; Pasqualini A.; Agather A.M.; Amon R.M.W.; Anderson R.F.; Andersson P.S.; Benner R.; Bowman K.L.; Edwards R.L.; Gdaniec S.; Gerringa L.J.A.; González A.G.; Granskog M.; Haley B.; Hammerschmidt C.R.; Hansell D.A.; Henderson P.B.; Kadko D.C.; Kaiser K.; Laan P.; Lam P.J.; Lamborg C.H.; Levier M.; Li X.; Margolin A.R.; Measures C.; Middag R.; Millero F.J.; Moore W.S.; Paffrath R.; Planquette H.; Rabe B.; Reader H.; Rember R.; Rijkenberg M.J.A.; Roy-Barman M.; Rutgers van der Loeff M.; Saito M.; Schauer U.; Schlosser P.; Sherrell R.M.; Shiller A.M.; Slagter H.; Sonke J.E.; Stedmon C.; Woosley R.J.; Valk O.; van Ooijen J.; Zhang R.
发表日期	2020
ISSN	21699275
卷号	125 期号:5
英文摘要	A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river-influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram Strait. In 2015, the international GEOTRACES program included a high-resolution pan-Arctic survey of carbon, nutrients, and a suite of trace elements and isotopes (TEIs). The cruises bisected the TPD at two locations in the central basin, which were defined by maxima in meteoric water and dissolved organic carbon concentrations that spanned 600 km horizontally and ~25–50 m vertically. Dissolved TEIs such as Fe, Co, Ni, Cu, Hg, Nd, and Th, which are generally particle-reactive but can be complexed by organic matter, were observed at concentrations much higher than expected for the open ocean setting. Other trace element concentrations such as Al, V, Ga, and Pb were lower than expected due to scavenging over the productive East Siberian and Laptev shelf seas. Using a combination of radionuclide tracers and ice drift modeling, the transport rate for the core of the TPD was estimated at 0.9 ± 0.4 Sv (106 m3 s−1). This rate was used to derive the mass flux for TEIs that were enriched in the TPD, revealing the importance of lateral transport in supplying materials beneath the ice to the central Arctic Ocean and potentially to the North Atlantic Ocean via Fram Strait. Continued intensification of the Arctic hydrologic cycle and permafrost degradation will likely lead to an increase in the flux of TEIs into the Arctic Ocean. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Arctic Ocean; carbon; GEOTRACES]; nutrients; trace elements; Transpolar Drift
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186875
作者单位	Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Oceanography, Dalhousie University, Halifax, NS, Canada; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Oceanography, Texas A&M University, College Station, TX, United States; School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center, MS, United States; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden; Institute of Marine Research, Fram Centre, Tromsø, Norway; School of Oceanography, University of Washington, Seattle, WA, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Oldenburg, Germany; Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Ocean Scien...
推荐引用方式 GB/T 7714	Charette M.A.,Kipp L.E.,Jensen L.T.,et al. The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean[J],2020,125(5).
APA	Charette M.A..,Kipp L.E..,Jensen L.T..,Dabrowski J.S..,Whitmore L.M..,...&Zhang R..(2020).The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean.Journal of Geophysical Research: Oceans,125(5).
MLA	Charette M.A.,et al."The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean".Journal of Geophysical Research: Oceans 125.5(2020).