Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study
International audience Atmospheric deposition is an important source of micronutrients to the ocean, but atmospheric deposition fluxes remain poorly constrained in most ocean regions due to the limited number of field observations of wet and dry atmospheric inputs. Here we present the distribution o...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.science/hal-02322572 https://hal.science/hal-02322572/document https://hal.science/hal-02322572/file/Menzel-Barraqueta_etal_Biogeosciences_2019.pdf https://doi.org/10.5194/bg-16-1525-2019 |
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ftunivbrest:oai:HAL:hal-02322572v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
FLOW-INJECTION ANALYSIS DISSOLVED ALUMINUM TRACE-ELEMENTS SURFACE WATERS DUST DEPOSITION SAHARAN DUST EASTERN ATLANTIC IRON DEPOSITION SARGASSO SEA AL ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
FLOW-INJECTION ANALYSIS DISSOLVED ALUMINUM TRACE-ELEMENTS SURFACE WATERS DUST DEPOSITION SAHARAN DUST EASTERN ATLANTIC IRON DEPOSITION SARGASSO SEA AL ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology Menzel Barraqueta, Jan-Lukas Klar, Jessica Gledhill, Martha Schlosser, Christian Shelley, Rachel Planquette, Hélène Wenzel, Bernhard Sarthou, Géraldine Achterberg, Eric Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
topic_facet |
FLOW-INJECTION ANALYSIS DISSOLVED ALUMINUM TRACE-ELEMENTS SURFACE WATERS DUST DEPOSITION SAHARAN DUST EASTERN ATLANTIC IRON DEPOSITION SARGASSO SEA AL ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Atmospheric deposition is an important source of micronutrients to the ocean, but atmospheric deposition fluxes remain poorly constrained in most ocean regions due to the limited number of field observations of wet and dry atmospheric inputs. Here we present the distribution of dissolved aluminium (dAl), as a tracer of atmospheric inputs, in surface waters of the Atlantic Ocean along GEOTRACES sections GA01, GA06, GA08, and GA10. We used the surface mixed-layer concentrations of dAl to calculate atmospheric deposition fluxes using a simple steady state model. We have optimized the Al fractional aerosol solubility, the dAl residence time within the surface mixed layer and the depth of the surface mixed layer for each separate cruise to calculate the atmospheric deposition fluxes. We calculated the lowest deposition fluxes of 0.15 +/- 0.1 and 0.27 +/- 0.13 gm(-2) yr(-1) for the South and North Atlantic Ocean (>40 degrees S and > 40 degrees N) respectively, and the highest fluxes of 1.8 and 3.09 gm(-2) yr(-1) for the south-east Atlantic and tropical Atlantic Ocean, respectively. Overall, our estimations are comparable to atmospheric dust deposition model estimates and reported field-based atmospheric deposition estimates. We note that our estimates diverge from atmospheric dust de-position model flux estimates in regions influenced by riverine Al inputs and in upwelling regions. As dAl is a key trace element in the GEOTRACES programme, the approach presented in this study allows calculations of atmospheric deposition fluxes at high spatial resolution for remote ocean regions. |
author2 |
Helmholtz Centre for Ocean Research Kiel (GEOMAR) Stellenbosch University National Oceanography Centre Southampton (NOC) University of Southampton Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth, Ocean and Atmospheric Science Tallahassee (FSU Florida State University Tallahassee (FSU) School of Geography, Earth and Environmental Sciences Plymouth (SoGEES) Plymouth University |
format |
Article in Journal/Newspaper |
author |
Menzel Barraqueta, Jan-Lukas Klar, Jessica Gledhill, Martha Schlosser, Christian Shelley, Rachel Planquette, Hélène Wenzel, Bernhard Sarthou, Géraldine Achterberg, Eric |
author_facet |
Menzel Barraqueta, Jan-Lukas Klar, Jessica Gledhill, Martha Schlosser, Christian Shelley, Rachel Planquette, Hélène Wenzel, Bernhard Sarthou, Géraldine Achterberg, Eric |
author_sort |
Menzel Barraqueta, Jan-Lukas |
title |
Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
title_short |
Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
title_full |
Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
title_fullStr |
Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
title_full_unstemmed |
Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study |
title_sort |
atmospheric deposition fluxes over the atlantic ocean: a geotraces case study |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02322572 https://hal.science/hal-02322572/document https://hal.science/hal-02322572/file/Menzel-Barraqueta_etal_Biogeosciences_2019.pdf https://doi.org/10.5194/bg-16-1525-2019 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-02322572 Biogeosciences, 2019, 16 (7), pp.1525-1542. ⟨10.5194/bg-16-1525-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-16-1525-2019 hal-02322572 https://hal.science/hal-02322572 https://hal.science/hal-02322572/document https://hal.science/hal-02322572/file/Menzel-Barraqueta_etal_Biogeosciences_2019.pdf doi:10.5194/bg-16-1525-2019 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-16-1525-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
7 |
container_start_page |
1525 |
op_container_end_page |
1542 |
_version_ |
1790604465347231744 |
spelling |
ftunivbrest:oai:HAL:hal-02322572v1 2024-02-11T10:06:38+01:00 Atmospheric deposition fluxes over the Atlantic Ocean: a GEOTRACES case study Menzel Barraqueta, Jan-Lukas Klar, Jessica Gledhill, Martha Schlosser, Christian Shelley, Rachel Planquette, Hélène Wenzel, Bernhard Sarthou, Géraldine Achterberg, Eric Helmholtz Centre for Ocean Research Kiel (GEOMAR) Stellenbosch University National Oceanography Centre Southampton (NOC) University of Southampton Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth, Ocean and Atmospheric Science Tallahassee (FSU Florida State University Tallahassee (FSU) School of Geography, Earth and Environmental Sciences Plymouth (SoGEES) Plymouth University 2019 https://hal.science/hal-02322572 https://hal.science/hal-02322572/document https://hal.science/hal-02322572/file/Menzel-Barraqueta_etal_Biogeosciences_2019.pdf https://doi.org/10.5194/bg-16-1525-2019 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-16-1525-2019 hal-02322572 https://hal.science/hal-02322572 https://hal.science/hal-02322572/document https://hal.science/hal-02322572/file/Menzel-Barraqueta_etal_Biogeosciences_2019.pdf doi:10.5194/bg-16-1525-2019 info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-02322572 Biogeosciences, 2019, 16 (7), pp.1525-1542. ⟨10.5194/bg-16-1525-2019⟩ FLOW-INJECTION ANALYSIS DISSOLVED ALUMINUM TRACE-ELEMENTS SURFACE WATERS DUST DEPOSITION SAHARAN DUST EASTERN ATLANTIC IRON DEPOSITION SARGASSO SEA AL ACL [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2019 ftunivbrest https://doi.org/10.5194/bg-16-1525-2019 2024-01-23T23:39:53Z International audience Atmospheric deposition is an important source of micronutrients to the ocean, but atmospheric deposition fluxes remain poorly constrained in most ocean regions due to the limited number of field observations of wet and dry atmospheric inputs. Here we present the distribution of dissolved aluminium (dAl), as a tracer of atmospheric inputs, in surface waters of the Atlantic Ocean along GEOTRACES sections GA01, GA06, GA08, and GA10. We used the surface mixed-layer concentrations of dAl to calculate atmospheric deposition fluxes using a simple steady state model. We have optimized the Al fractional aerosol solubility, the dAl residence time within the surface mixed layer and the depth of the surface mixed layer for each separate cruise to calculate the atmospheric deposition fluxes. We calculated the lowest deposition fluxes of 0.15 +/- 0.1 and 0.27 +/- 0.13 gm(-2) yr(-1) for the South and North Atlantic Ocean (>40 degrees S and > 40 degrees N) respectively, and the highest fluxes of 1.8 and 3.09 gm(-2) yr(-1) for the south-east Atlantic and tropical Atlantic Ocean, respectively. Overall, our estimations are comparable to atmospheric dust deposition model estimates and reported field-based atmospheric deposition estimates. We note that our estimates diverge from atmospheric dust de-position model flux estimates in regions influenced by riverine Al inputs and in upwelling regions. As dAl is a key trace element in the GEOTRACES programme, the approach presented in this study allows calculations of atmospheric deposition fluxes at high spatial resolution for remote ocean regions. Article in Journal/Newspaper North Atlantic Université de Bretagne Occidentale: HAL Biogeosciences 16 7 1525 1542 |