What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach
International audience The complex biogeochemical SWAMCO-3 model has been used to assess the response of the ice-free Southern Ocean to the physical and biological mechanisms governing air-sea CO 2 exchanges. For this application, the model explicitly details the dynamics of three Phytoplankton Func...
Published in: | Marine Chemistry |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.science/hal-01197219 https://doi.org/10.1016/j.marchem.2015.08.008 |
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ftunivparis:oai:HAL:hal-01197219v1 |
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openpolar |
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Open Polar |
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Université de Paris: Portail HAL |
op_collection_id |
ftunivparis |
language |
English |
topic |
Southern ocean Air-sea CO 2 fluxes Biogeochemical modelling Seasonality [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
Southern ocean Air-sea CO 2 fluxes Biogeochemical modelling Seasonality [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Pasquer, B. Metzl, Nicolas Goosse, Hugues Lancelot, Christiane What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
topic_facet |
Southern ocean Air-sea CO 2 fluxes Biogeochemical modelling Seasonality [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience The complex biogeochemical SWAMCO-3 model has been used to assess the response of the ice-free Southern Ocean to the physical and biological mechanisms governing air-sea CO 2 exchanges. For this application, the model explicitly details the dynamics of three Phytoplankton Functional Types (PFTs) of importance for C, N, P, Si, Fe cycling and air-sea CO 2 exchange in this area. These are the diatoms, the pico-nanophytoplankton and the coccolithophores whose growth regulation by light, temperature and nutrients has been obtained from a literature review of phenomenological observations available for these PFTs. The performance of the SWAMCO-3 model coupled to a vertical one-dimensional physical model was first assessed at the location of the JGOFS time-series station KERFIX. The model was able to reproduce a mean seasonal cycle based on years where a maximum of chemical and biological observations are available at this location (1993–1994, 1994–1995, 1998–1999 and 2000–2001). Ocean f CO 2 in equilibrium with the atmosphere are simulated both in Austral winter associated with surface layer replenishment in DIC due to deep vertical mixing and in late summer as a consequence of the warming effect on the carbonate system. A clear under-saturation is found in spring/summer. Analysis of the modelled seasonal biogeochemical and physical features shows that thermodynamical conditions are driving the air-sea exchange of CO 2 in the region, while the biological activity under the control of light and iron availability, is responsible for the predicted relatively modest annual carbon sink (− 0.9 mol C m -2 y -1 ) |
author2 |
Équipe CO2 (E-CO2) 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)-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)) 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) Earth and Life Institute - Environmental Sciences (ELIE) Université Catholique de Louvain = Catholic University of Louvain (UCL) |
format |
Article in Journal/Newspaper |
author |
Pasquer, B. Metzl, Nicolas Goosse, Hugues Lancelot, Christiane |
author_facet |
Pasquer, B. Metzl, Nicolas Goosse, Hugues Lancelot, Christiane |
author_sort |
Pasquer, B. |
title |
What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
title_short |
What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
title_full |
What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
title_fullStr |
What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
title_full_unstemmed |
What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach |
title_sort |
what drives the seasonality of air-sea co 2 fluxes in the ice-free zone of the southern ocean: a 1d coupled physical-biogeochemical model approach |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-01197219 https://doi.org/10.1016/j.marchem.2015.08.008 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0304-4203 Marine Chemistry https://hal.science/hal-01197219 Marine Chemistry, 2015, 177 (3), pp.554-565. ⟨10.1016/j.marchem.2015.08.008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2015.08.008 hal-01197219 https://hal.science/hal-01197219 doi:10.1016/j.marchem.2015.08.008 |
op_doi |
https://doi.org/10.1016/j.marchem.2015.08.008 |
container_title |
Marine Chemistry |
container_volume |
177 |
container_start_page |
554 |
op_container_end_page |
565 |
_version_ |
1799467272245346304 |
spelling |
ftunivparis:oai:HAL:hal-01197219v1 2024-05-19T07:48:54+00:00 What drives the seasonality of air-sea CO 2 fluxes in the ice-free zone of the southern ocean: A 1D coupled physical-biogeochemical model approach Pasquer, B. Metzl, Nicolas Goosse, Hugues Lancelot, Christiane Équipe CO2 (E-CO2) 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)-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)) 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) Earth and Life Institute - Environmental Sciences (ELIE) Université Catholique de Louvain = Catholic University of Louvain (UCL) 2015-12-20 https://hal.science/hal-01197219 https://doi.org/10.1016/j.marchem.2015.08.008 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2015.08.008 hal-01197219 https://hal.science/hal-01197219 doi:10.1016/j.marchem.2015.08.008 ISSN: 0304-4203 Marine Chemistry https://hal.science/hal-01197219 Marine Chemistry, 2015, 177 (3), pp.554-565. ⟨10.1016/j.marchem.2015.08.008⟩ Southern ocean Air-sea CO 2 fluxes Biogeochemical modelling Seasonality [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2015 ftunivparis https://doi.org/10.1016/j.marchem.2015.08.008 2024-04-23T03:52:54Z International audience The complex biogeochemical SWAMCO-3 model has been used to assess the response of the ice-free Southern Ocean to the physical and biological mechanisms governing air-sea CO 2 exchanges. For this application, the model explicitly details the dynamics of three Phytoplankton Functional Types (PFTs) of importance for C, N, P, Si, Fe cycling and air-sea CO 2 exchange in this area. These are the diatoms, the pico-nanophytoplankton and the coccolithophores whose growth regulation by light, temperature and nutrients has been obtained from a literature review of phenomenological observations available for these PFTs. The performance of the SWAMCO-3 model coupled to a vertical one-dimensional physical model was first assessed at the location of the JGOFS time-series station KERFIX. The model was able to reproduce a mean seasonal cycle based on years where a maximum of chemical and biological observations are available at this location (1993–1994, 1994–1995, 1998–1999 and 2000–2001). Ocean f CO 2 in equilibrium with the atmosphere are simulated both in Austral winter associated with surface layer replenishment in DIC due to deep vertical mixing and in late summer as a consequence of the warming effect on the carbonate system. A clear under-saturation is found in spring/summer. Analysis of the modelled seasonal biogeochemical and physical features shows that thermodynamical conditions are driving the air-sea exchange of CO 2 in the region, while the biological activity under the control of light and iron availability, is responsible for the predicted relatively modest annual carbon sink (− 0.9 mol C m -2 y -1 ) Article in Journal/Newspaper Southern Ocean Université de Paris: Portail HAL Marine Chemistry 177 554 565 |