New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic
An optimum multiparameter (OMP) analysis was applied to samples collected during a cruise in the northeast North Atlantic with the aim of objectively defining water mass realms and calculating water mass mixing-weighted average (archetypal) concentrations of dissolved organic carbon (DOC) and nitrog...
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ftarchimer:oai:archimer.ifremer.fr:24979 2023-05-15T15:10:53+02:00 New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic Alvarez-salgado, X. A. Nieto-cid, M. Alvarez, M. Perez, F Morin, P Mercier, Herle 2013-03 application/pdf https://archimer.ifremer.fr/doc/00139/24979/23060.pdf https://doi.org/10.4319/lo.2013.58.2.0681 https://archimer.ifremer.fr/doc/00139/24979/ eng eng Amer Soc Limnology Oceanography https://archimer.ifremer.fr/doc/00139/24979/23060.pdf doi:10.4319/lo.2013.58.2.0681 https://archimer.ifremer.fr/doc/00139/24979/ 2013, by the Association for the Sciences of Limnology and Oceanography, Inc. info:eu-repo/semantics/openAccess restricted use Limnology And Oceanography (0024-3590) (Amer Soc Limnology Oceanography), 2013-03 , Vol. 58 , N. 2 , P. 681-696 text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.4319/lo.2013.58.2.0681 2021-09-23T20:23:05Z An optimum multiparameter (OMP) analysis was applied to samples collected during a cruise in the northeast North Atlantic with the aim of objectively defining water mass realms and calculating water mass mixing-weighted average (archetypal) concentrations of dissolved organic carbon (DOC) and nitrogen (DON) and fluorescent dissolved organic matter (FDOM). The profile of archetypal DOC, which retains the basin-scale variability from the formation area of the water masses to the study area, was modeled with a constant initial concentration of 60 +/- 1 mu mol kg(-1) that decreased linearly with increasing apparent oxygen utilization (AOU) at a rate of -0.20 +/- 0.03 mol C per mol of AOU. The archetypal C:N ratio of dissolved organic matter was also modeled with a constant initial molar ratio of 11.5 +/- 0.4 that increased at a rate of 0.06 +/- 0.01 per mu mol kg(-1) of AOU. The profile of archetypal FDOM was modeled with a constant initial humic-like fluorescence of 0.54 +/- 0.07 quinine sulfate units that increased at a rate of 0.009 +/- 0.001 g equivalent of quinine sulphate per mol of AOU. Only the Denmark Strait Overflow Water departed from this behavior because of the marked terrestrial influence of Arctic rivers during the formation of this water mass. The variability not explained by the archetypal concentrations, which retain the local variability, suggesting that N-poor DOM was mineralized in the study area, and that the efficiency of the local production of humic-like substances was directly proportional to the ventilation of the corresponding water mass realms. Article in Journal/Newspaper Arctic Denmark Strait North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Limnology and Oceanography 58 2 681 696 |
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Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
An optimum multiparameter (OMP) analysis was applied to samples collected during a cruise in the northeast North Atlantic with the aim of objectively defining water mass realms and calculating water mass mixing-weighted average (archetypal) concentrations of dissolved organic carbon (DOC) and nitrogen (DON) and fluorescent dissolved organic matter (FDOM). The profile of archetypal DOC, which retains the basin-scale variability from the formation area of the water masses to the study area, was modeled with a constant initial concentration of 60 +/- 1 mu mol kg(-1) that decreased linearly with increasing apparent oxygen utilization (AOU) at a rate of -0.20 +/- 0.03 mol C per mol of AOU. The archetypal C:N ratio of dissolved organic matter was also modeled with a constant initial molar ratio of 11.5 +/- 0.4 that increased at a rate of 0.06 +/- 0.01 per mu mol kg(-1) of AOU. The profile of archetypal FDOM was modeled with a constant initial humic-like fluorescence of 0.54 +/- 0.07 quinine sulfate units that increased at a rate of 0.009 +/- 0.001 g equivalent of quinine sulphate per mol of AOU. Only the Denmark Strait Overflow Water departed from this behavior because of the marked terrestrial influence of Arctic rivers during the formation of this water mass. The variability not explained by the archetypal concentrations, which retain the local variability, suggesting that N-poor DOM was mineralized in the study area, and that the efficiency of the local production of humic-like substances was directly proportional to the ventilation of the corresponding water mass realms. |
format |
Article in Journal/Newspaper |
author |
Alvarez-salgado, X. A. Nieto-cid, M. Alvarez, M. Perez, F Morin, P Mercier, Herle |
spellingShingle |
Alvarez-salgado, X. A. Nieto-cid, M. Alvarez, M. Perez, F Morin, P Mercier, Herle New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
author_facet |
Alvarez-salgado, X. A. Nieto-cid, M. Alvarez, M. Perez, F Morin, P Mercier, Herle |
author_sort |
Alvarez-salgado, X. A. |
title |
New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
title_short |
New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
title_full |
New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
title_fullStr |
New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
title_full_unstemmed |
New insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast North Atlantic |
title_sort |
new insights on the mineralization of dissolved organic matter in central, intermediate, and deep water masses of the northeast north atlantic |
publisher |
Amer Soc Limnology Oceanography |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00139/24979/23060.pdf https://doi.org/10.4319/lo.2013.58.2.0681 https://archimer.ifremer.fr/doc/00139/24979/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Denmark Strait North Atlantic |
genre_facet |
Arctic Denmark Strait North Atlantic |
op_source |
Limnology And Oceanography (0024-3590) (Amer Soc Limnology Oceanography), 2013-03 , Vol. 58 , N. 2 , P. 681-696 |
op_relation |
https://archimer.ifremer.fr/doc/00139/24979/23060.pdf doi:10.4319/lo.2013.58.2.0681 https://archimer.ifremer.fr/doc/00139/24979/ |
op_rights |
2013, by the Association for the Sciences of Limnology and Oceanography, Inc. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.4319/lo.2013.58.2.0681 |
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Limnology and Oceanography |
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58 |
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2 |
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681 |
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696 |
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1766341816126275584 |