What drives the seasonality of air–sea CO2 fluxes in the ice-free zone of the Southern Ocean: A 1D coupled physical–biogeochemical model approach
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 CO2 exchanges. For this application, the model explicitly details the dynamics of three Phytoplankton Functional Types (PFTs) of...
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Online Access: | http://hdl.handle.net/2078.1/167762 https://doi.org/10.1016/j.marchem.2015.08.008 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:167762 2024-05-19T07:48:53+00:00 What drives the seasonality of air–sea CO2 fluxes in the ice-free zone of the Southern Ocean: A 1D coupled physical–biogeochemical model approach Pasquer, B. Metzl, N. Goosse, Hugues Lancelot, C. UCL - SST/ELI/ELIC - Earth & Climate 2015 http://hdl.handle.net/2078.1/167762 https://doi.org/10.1016/j.marchem.2015.08.008 eng eng Elsevier BV boreal:167762 http://hdl.handle.net/2078.1/167762 doi:10.1016/j.marchem.2015.08.008 urn:ISSN:0304-4203 urn:EISSN:1872-7581 info:eu-repo/semantics/restrictedAccess Marine Chemistry, Vol. 177, no.177, p. 554-565 (2015) CISM:CECI Biogeochemical modelling Southern Ocean Air–sea CO2 fluxes Seasonality 1443 info:eu-repo/semantics/article 2015 ftunivlouvain https://doi.org/10.1016/j.marchem.2015.08.008 2024-04-24T01:26:47Z 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 CO2 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 CO2 exchange in this area. These are the diatoms, the pico–nanophytoplankton and the coccolithophoreswhose 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 modelwas able to reproduce a mean seasonal cycle based on yearswhere amaximumof chemical and biological observations are available at this location (1993–1994, 1994–1995, 1998–1999 and 2000–2001). Ocean fCO2 in equilibriumwith the atmosphere are simulated both in Australwinter associated with surface layer replenishment in DIC due to deep verticalmixing 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 CO2 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 DIAL@UCLouvain (Université catholique de Louvain) Marine Chemistry 177 554 565 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
CISM:CECI Biogeochemical modelling Southern Ocean Air–sea CO2 fluxes Seasonality 1443 |
spellingShingle |
CISM:CECI Biogeochemical modelling Southern Ocean Air–sea CO2 fluxes Seasonality 1443 Pasquer, B. Metzl, N. Goosse, Hugues Lancelot, C. What drives the seasonality of air–sea CO2 fluxes in the ice-free zone of the Southern Ocean: A 1D coupled physical–biogeochemical model approach |
topic_facet |
CISM:CECI Biogeochemical modelling Southern Ocean Air–sea CO2 fluxes Seasonality 1443 |
description |
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 CO2 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 CO2 exchange in this area. These are the diatoms, the pico–nanophytoplankton and the coccolithophoreswhose 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 modelwas able to reproduce a mean seasonal cycle based on yearswhere amaximumof chemical and biological observations are available at this location (1993–1994, 1994–1995, 1998–1999 and 2000–2001). Ocean fCO2 in equilibriumwith the atmosphere are simulated both in Australwinter associated with surface layer replenishment in DIC due to deep verticalmixing 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 CO2 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 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Pasquer, B. Metzl, N. Goosse, Hugues Lancelot, C. |
author_facet |
Pasquer, B. Metzl, N. Goosse, Hugues Lancelot, C. |
author_sort |
Pasquer, B. |
title |
What drives the seasonality of air–sea CO2 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 CO2 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 CO2 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 CO2 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 CO2 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 co2 fluxes in the ice-free zone of the southern ocean: a 1d coupled physical–biogeochemical model approach |
publisher |
Elsevier BV |
publishDate |
2015 |
url |
http://hdl.handle.net/2078.1/167762 https://doi.org/10.1016/j.marchem.2015.08.008 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Marine Chemistry, Vol. 177, no.177, p. 554-565 (2015) |
op_relation |
boreal:167762 http://hdl.handle.net/2078.1/167762 doi:10.1016/j.marchem.2015.08.008 urn:ISSN:0304-4203 urn:EISSN:1872-7581 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1799467269146804224 |