The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean
| Type | Article | ||||||||||||||||
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| Date | 2020-05 | ||||||||||||||||
| Language | English | ||||||||||||||||
| Author(s) | Charette Matthew A.1, Kipp Lauren E.2, 3, Jensen Laramie T.4, Dabrowski Jessica S.1, Whitmore Laura M.5, Fitzsimmons Jessica N.4, Williford Tatiana4, Ulfsbo Adam6, Jones Elizabeth7, Bundy Randelle M.1, 8, Vivancos Sebastian M.3, 9, Pahnke Katharina10, John Seth G.11, Xiang Yang12, Hatta Mariko13, Petrova Mariia V.14, Heimbürger-Boavida Lars-Eric14, Bauch Dorothea15, Newton Robert3, Pasqualini Angelica16, Agather Alison M.17, Amon Rainer M.W.4, 18, Anderson Robert F.3, Andersson Per S.19, Benner Ronald20, Bowman Katlin L.12, Edwards R. Lawrence21, Gdaniec Sandra19, 22, 23, Gerringa Loes J.A.24, González Aridane G.25, 26, Granskog Mats27, Haley Brian28, Hammerschmidt Chad R.17, Hansell Dennis A.29, Henderson Paul B.1, Kadko David C.30, Kaiser Karl4, 18, Laan Patrick24, Lam Phoebe J.12, Lamborg Carl H.12, Levier Martin23, Li Xianglei21, Margolin Andrew R.29, 31, Measures Chris13, Middag Rob24, Millero Frank J.29, Moore Willard S.20, Paffrath Ronja10, Planquette Helene25, Rabe Benjamin32, Reader Heather33, 34, Rember Robert35, Rijkenberg Micha J.A.25, Roy-Barman Matthieu24, Rutgers Van Der Loeff Michiel32, Saito Mak1, Schauer Ursula32, Schlosser Peter3, 36, 37, Sherrell Robert M.38, 39, Shiller Alan M.5, Slagter Hans23, 40, Sonke Jeroen E.41, Stedmon Colin33, Woosley Ryan J.29, 42, Valk Ole32, Van Ooijen Jan24, Zhang Ruifeng11, 43 | ||||||||||||||||
| Affiliation(s) | 1 : Woods Hole Oceanographic Institution; Woods Hole MA, USA 2 : Dalhousie University; Halifax NS, Canada 3 : Lamont-Doherty Earth Observatory of Columbia University; Palisades NY ,USA 4 : Department of Oceanography; Texas A&M University; College Station TX, USA 5 : School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center; MS, USA 6 : Department of Marine Sciences; University of Gothenburg; Gothenburg, Sweden 7 : Institute of Marine Research, Fram Centre; Tromsø ,Norway 8 : School of Oceanography, University of Washington; Seattle Washington, USA 9 : Department of Earth and Environmental Sciences; Columbia University; New York NY, USA 10 : Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg; Oldenburg, Germany 11 : Department of Earth Sciences; University of Southern California; Los Angeles CA, USA 12 : Department of Ocean Sciences; University of California, Santa Cruz; Santa Cruz CA, USA 13 : Department of Oceanography; University of Hawaii at Manoa; Honolulu Hawaii ,USA 14 : Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110; Marseille, France 15 : GEOMAR Helmholtz Center for Ocean Research Kiel; Kiel ,Germany 16 : Department of Earth and Environmental Engineering; Columbia University; New York NY ,USA 17 : Department of Earth and Environmental Sciences; Wright State University; Dayton OH ,USA 18 : Department of Marine Science; Texas A&M University at Galveston; Texas ,USA 19 : Swedish Museum of Natural History, Department of Geosciences; Stockholm ,Sweden 20 : School of the Earth, Ocean and Environment, University of South Carolina; Columbia SC ,USA 21 : Department of Earth and Environmental Sciences; University of Minnesota; Minneapolis MN, USA 22 : Stockholm University; Department of Geological Sciences; Stockholm, Sweden 23 : Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ; Université Paris-Saclay; Gif-sur-Yvette, France 24 : Department of Ocean Systems; NIOZ Royal Institute for Sea Research and Utrecht University; Den Burg ,Netherlands 25 : University of Brest, CNRS, IRD, Ifremer, LEMAR; Plouzané, France 26 : Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Las Palmas de Gran Canaria (ULPGC); Las Palmas ,Spain 27 : Norwegian Polar Institute; Tromsø ,Norway 28 : College of Earth, Ocean, and Atmospheric Sciences, Oregon State University; Corvalis OR ,USA 29 : Rosenstiel School of Marine and Atmospheric Science, University of Miami; Miami FL, USA 30 : Florida International University, Applied Research Center; Miami FL, USA 31 : Institute for the Oceans and Fisheries, University of British Columbia, Vancouver; British Columbia, Canada 32 : Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; Bremerhaven, Germany 33 : Technical University of Denmark, National Institute of Aquatic Resources; Lyngby ,Denmark 34 : Department of Chemistry; Memorial University of Newfoundland; St John's NL ,Canada 35 : International Arctic Research Center; University of Alaska, Fairbank; Fairbanks AK, USA 36 : Arizona State University, School of Sustainability; Tempe AZ, USA 37 : The Earth Institute of Columbia University; New York NY, USA 38 : Department of Marine and Coastal Sciences; Rutgers University; New Brunswick NJ, USA 39 : Department of Earth and Planetary Sciences; Rutgers University; Piscataway NJ ,USA 40 : Max Planck Institute for Chemistry; Mainz ,Germany 41 : Laboratoire Géosciences Environnement Toulouse, CNRS/Institute for Research and Development/Université Paul Sabatier-Toulouse III; Toulouse, France 42 : Center for Global Change Science, Massachusetts Institute of Technology; Cambridge MA ,USA 43 : School of Oceanography, Shanghai Jiao Tong University; Shanghai, China |
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| Source | Journal Of Geophysical Research-oceans (2169-9275) (American Geophysical Union (AGU)), 2020-05 , Vol. 125 , N. 5 , P. e2019JC015920 (34p.) | ||||||||||||||||
| DOI | 10.1029/2019JC015920 | ||||||||||||||||
| WOS© Times Cited | 84 | ||||||||||||||||
| Abstract | 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. | ||||||||||||||||
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