What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions?
International audience Dust deposition is extremely variable over all timescales. Yet the impact of this variability on ocean biogeochemistry is currently not known, at least on the global scale. Here, we force a global model of ocean biogeochemistry over 1996 to 2001 with daily fields of dust depos...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://hal.science/hal-00387920 https://hal.science/hal-00387920/document https://hal.science/hal-00387920/file/2007GL031131.pdf https://doi.org/10.1029/2007GL031131 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Aumont, Olivier Bopp, Laurent Schulz, Michael What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Dust deposition is extremely variable over all timescales. Yet the impact of this variability on ocean biogeochemistry is currently not known, at least on the global scale. Here, we force a global model of ocean biogeochemistry over 1996 to 2001 with daily fields of dust deposition simulated by an atmospheric aerosol model. Our model results suggest that dust deposition explains a large part of the temporal variability of surface iron in the tropical regions and in part of the subarctic Pacific. However, while dust deposition is dominated by daily events, its impact on surface iron is maximal on interannual timescales. The largest fluctuations of surface iron produced by dust occur in oligotrophic regions where phytoplankton growth is not primarily controlled by iron availability. Consequently, the variability of surface chlorophyll induced by aerosol iron is predicted to be very small everywhere, especially relative to the impact of the ocean dynamics. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Aumont, Olivier Bopp, Laurent Schulz, Michael |
author_facet |
Aumont, Olivier Bopp, Laurent Schulz, Michael |
author_sort |
Aumont, Olivier |
title |
What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
title_short |
What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
title_full |
What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
title_fullStr |
What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
title_full_unstemmed |
What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
title_sort |
what does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00387920 https://hal.science/hal-00387920/document https://hal.science/hal-00387920/file/2007GL031131.pdf https://doi.org/10.1029/2007GL031131 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00387920 Geophysical Research Letters, 2008, 35, pp.L07607. ⟨10.1029/2007GL031131⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031131 hal-00387920 https://hal.science/hal-00387920 https://hal.science/hal-00387920/document https://hal.science/hal-00387920/file/2007GL031131.pdf doi:10.1029/2007GL031131 IRD: PAR00002422 WOS: 000255075100001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007GL031131 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
7 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1797570792042528768 |
spelling |
ftinsu:oai:HAL:hal-00387920v1 2024-04-28T08:39:59+00:00 What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions? Aumont, Olivier Bopp, Laurent Schulz, Michael Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2008 https://hal.science/hal-00387920 https://hal.science/hal-00387920/document https://hal.science/hal-00387920/file/2007GL031131.pdf https://doi.org/10.1029/2007GL031131 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031131 hal-00387920 https://hal.science/hal-00387920 https://hal.science/hal-00387920/document https://hal.science/hal-00387920/file/2007GL031131.pdf doi:10.1029/2007GL031131 IRD: PAR00002422 WOS: 000255075100001 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00387920 Geophysical Research Letters, 2008, 35, pp.L07607. ⟨10.1029/2007GL031131⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.1029/2007GL031131 2024-04-05T00:40:08Z International audience Dust deposition is extremely variable over all timescales. Yet the impact of this variability on ocean biogeochemistry is currently not known, at least on the global scale. Here, we force a global model of ocean biogeochemistry over 1996 to 2001 with daily fields of dust deposition simulated by an atmospheric aerosol model. Our model results suggest that dust deposition explains a large part of the temporal variability of surface iron in the tropical regions and in part of the subarctic Pacific. However, while dust deposition is dominated by daily events, its impact on surface iron is maximal on interannual timescales. The largest fluctuations of surface iron produced by dust occur in oligotrophic regions where phytoplankton growth is not primarily controlled by iron availability. Consequently, the variability of surface chlorophyll induced by aerosol iron is predicted to be very small everywhere, especially relative to the impact of the ocean dynamics. Article in Journal/Newspaper Subarctic Institut national des sciences de l'Univers: HAL-INSU Geophysical Research Letters 35 7 n/a n/a |