Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal
The distribution of dissolved aluminium (dAl) in the water column of the North Atlantic and Labrador Sea was studied along GEOTRACES section GA01 to unravel the sources and sinks of this element. Surface water dAl concentrations were low (median of 2.5 nM) due to low aerosol deposition and removal b...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Gesellschaft Mbh
2018
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Online Access: | https://archimer.ifremer.fr/doc/00422/53359/54197.pdf https://archimer.ifremer.fr/doc/00422/53359/54198.pdf https://archimer.ifremer.fr/doc/00422/53359/58643.pdf https://archimer.ifremer.fr/doc/00422/53359/58644.pdf https://doi.org/10.5194/bg-15-5271-2018 https://archimer.ifremer.fr/doc/00422/53359/ |
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ftarchimer:oai:archimer.ifremer.fr:53359 2023-05-15T16:30:02+02:00 Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal Barraqueta, Jan-lukas Menzel Schlosser, Christian Planquette, Helene Gourain, Arthur Cheize, Marie Boutorh, Julia Shelley, Rachel Pereira, Leonardo Contreira Gledhill, Martha Hopwood, Mark J. Lacan, Francois Lherminier, Pascale Sarthou, Geraldine Achterberg, Eric P. 2018-08 application/pdf https://archimer.ifremer.fr/doc/00422/53359/54197.pdf https://archimer.ifremer.fr/doc/00422/53359/54198.pdf https://archimer.ifremer.fr/doc/00422/53359/58643.pdf https://archimer.ifremer.fr/doc/00422/53359/58644.pdf https://doi.org/10.5194/bg-15-5271-2018 https://archimer.ifremer.fr/doc/00422/53359/ eng eng Copernicus Gesellschaft Mbh https://archimer.ifremer.fr/doc/00422/53359/54197.pdf https://archimer.ifremer.fr/doc/00422/53359/54198.pdf https://archimer.ifremer.fr/doc/00422/53359/58643.pdf https://archimer.ifremer.fr/doc/00422/53359/58644.pdf doi:10.5194/bg-15-5271-2018 https://archimer.ifremer.fr/doc/00422/53359/ Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. info:eu-repo/semantics/openAccess restricted use CC-BY Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-08 , Vol. 15 , N. 16 , P. 5271-5286 text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.5194/bg-15-5271-2018 2021-09-23T20:30:28Z The distribution of dissolved aluminium (dAl) in the water column of the North Atlantic and Labrador Sea was studied along GEOTRACES section GA01 to unravel the sources and sinks of this element. Surface water dAl concentrations were low (median of 2.5 nM) due to low aerosol deposition and removal by phytoplankton. However, surface water dAl concentrations were enhanced on the Iberian and Greenland shelves (up to 30.9 nM) due to continental inputs (rivers, glacial flour and ice melt). A negative correlation was observed between dAl in surface waters and primary production, phytoplankton community structure and biogenic opal production. The abundance of diatoms exerted a significant (p < 0.01) control on the surface particulate Al (pAl) to dAl ratios by decreasing dAl levels and increasing pAl levels. Dissolved Al concentrations generally increased with depth and correlated strongly with silicate (R2 > 0.76) west of the Iberian Basin, suggesting net release of dAl at depth during remineralization of sinking biogenic opal containing particles. Enrichment of dAl at near-bottom depths was observed due to resuspension of sediments near the sediment-water interface. The highest dAl (up to 38.7 nM) concentrations were observed in Mediterranean Overflow Waters which act as a major source of dAl to mid depth waters of the eastern North Atlantic. This study clearly shows that the vertical and lateral distribution of dAl in the North Atlantic differs when compared to other regions of the North Atlantic and global ocean due to the large spatial differences both in the main source of Al, atmospheric deposition, and the main sink for Al, particle scavenging, between different oceanic regions. Article in Journal/Newspaper Greenland Labrador Sea North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Greenland Biogeosciences 15 16 5271 5286 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
The distribution of dissolved aluminium (dAl) in the water column of the North Atlantic and Labrador Sea was studied along GEOTRACES section GA01 to unravel the sources and sinks of this element. Surface water dAl concentrations were low (median of 2.5 nM) due to low aerosol deposition and removal by phytoplankton. However, surface water dAl concentrations were enhanced on the Iberian and Greenland shelves (up to 30.9 nM) due to continental inputs (rivers, glacial flour and ice melt). A negative correlation was observed between dAl in surface waters and primary production, phytoplankton community structure and biogenic opal production. The abundance of diatoms exerted a significant (p < 0.01) control on the surface particulate Al (pAl) to dAl ratios by decreasing dAl levels and increasing pAl levels. Dissolved Al concentrations generally increased with depth and correlated strongly with silicate (R2 > 0.76) west of the Iberian Basin, suggesting net release of dAl at depth during remineralization of sinking biogenic opal containing particles. Enrichment of dAl at near-bottom depths was observed due to resuspension of sediments near the sediment-water interface. The highest dAl (up to 38.7 nM) concentrations were observed in Mediterranean Overflow Waters which act as a major source of dAl to mid depth waters of the eastern North Atlantic. This study clearly shows that the vertical and lateral distribution of dAl in the North Atlantic differs when compared to other regions of the North Atlantic and global ocean due to the large spatial differences both in the main source of Al, atmospheric deposition, and the main sink for Al, particle scavenging, between different oceanic regions. |
format |
Article in Journal/Newspaper |
author |
Barraqueta, Jan-lukas Menzel Schlosser, Christian Planquette, Helene Gourain, Arthur Cheize, Marie Boutorh, Julia Shelley, Rachel Pereira, Leonardo Contreira Gledhill, Martha Hopwood, Mark J. Lacan, Francois Lherminier, Pascale Sarthou, Geraldine Achterberg, Eric P. |
spellingShingle |
Barraqueta, Jan-lukas Menzel Schlosser, Christian Planquette, Helene Gourain, Arthur Cheize, Marie Boutorh, Julia Shelley, Rachel Pereira, Leonardo Contreira Gledhill, Martha Hopwood, Mark J. Lacan, Francois Lherminier, Pascale Sarthou, Geraldine Achterberg, Eric P. Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
author_facet |
Barraqueta, Jan-lukas Menzel Schlosser, Christian Planquette, Helene Gourain, Arthur Cheize, Marie Boutorh, Julia Shelley, Rachel Pereira, Leonardo Contreira Gledhill, Martha Hopwood, Mark J. Lacan, Francois Lherminier, Pascale Sarthou, Geraldine Achterberg, Eric P. |
author_sort |
Barraqueta, Jan-lukas Menzel |
title |
Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
title_short |
Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
title_full |
Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
title_fullStr |
Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
title_full_unstemmed |
Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal |
title_sort |
aluminium in the north atlantic ocean and the labrador sea (geotraces ga01 section): roles of continental inputs and biogenic particle removal |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00422/53359/54197.pdf https://archimer.ifremer.fr/doc/00422/53359/54198.pdf https://archimer.ifremer.fr/doc/00422/53359/58643.pdf https://archimer.ifremer.fr/doc/00422/53359/58644.pdf https://doi.org/10.5194/bg-15-5271-2018 https://archimer.ifremer.fr/doc/00422/53359/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Labrador Sea North Atlantic |
genre_facet |
Greenland Labrador Sea North Atlantic |
op_source |
Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-08 , Vol. 15 , N. 16 , P. 5271-5286 |
op_relation |
https://archimer.ifremer.fr/doc/00422/53359/54197.pdf https://archimer.ifremer.fr/doc/00422/53359/54198.pdf https://archimer.ifremer.fr/doc/00422/53359/58643.pdf https://archimer.ifremer.fr/doc/00422/53359/58644.pdf doi:10.5194/bg-15-5271-2018 https://archimer.ifremer.fr/doc/00422/53359/ |
op_rights |
Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-15-5271-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
16 |
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5271 |
op_container_end_page |
5286 |
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1766019752435646464 |