Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea)
peer reviewed We present an Arctic seasonal survey of carbon dioxide partial pressure (pCO2) dynamics within sea ice brine and related air-ice CO2 fluxes. The survey was carried out from early spring to the beginning of summer in the Arctic coastal waters of the Amundsen Gulf. High concentrations of...
Published in: | Journal of Geophysical Research: Oceans |
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2012
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Online Access: | https://orbi.uliege.be/handle/2268/125925 https://doi.org/10.1029/2011JC007118 |
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ftorbi:oai:orbi.ulg.ac.be:2268/125925 2024-10-13T14:01:16+00:00 Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) Geilfus, Nicolas-Xavier Carnat, G. Papakyriakou, T. Tison, Jean-Louis Else, B. Thomas, H. Shadwick, E. Delille, Bruno Unité d'Océanographie Chimique 2012-02-02 https://orbi.uliege.be/handle/2268/125925 https://doi.org/10.1029/2011JC007118 en eng American Geophysical Union (AGU) urn:issn:2169-9275 urn:issn:2169-9291 https://orbi.uliege.be/handle/2268/125925 info:hdl:2268/125925 doi:10.1029/2011JC007118 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Geophysical Research. Oceans, 117 (C00G10) (2012-02-02) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2012 ftorbi https://doi.org/10.1029/2011JC007118 2024-09-27T07:01:42Z peer reviewed We present an Arctic seasonal survey of carbon dioxide partial pressure (pCO2) dynamics within sea ice brine and related air-ice CO2 fluxes. The survey was carried out from early spring to the beginning of summer in the Arctic coastal waters of the Amundsen Gulf. High concentrations of pCO2 (up to 1834 matm) were observed in the sea ice in early April as a consequence of concentration of solutes in brines, CaCO3 precipitation and microbial respiration. CaCO3 precipitation was detected through anomalies in total alkalinity (TA) and dissolved inorganic carbon (DIC). This precipitation seems to have occurred in highly saline brine in the upper part of the ice cover and in bulk ice. As summer draws near, the ice temperature increases and brine pCO2 shifts from a large supersaturation (1834 matm) to a marked undersaturation (down to almost 0 matm). This decrease was ascribed to brine dilution by ice meltwater, dissolution of CaCO3 and photosynthesis during the sympagic algal bloom. The magnitude of the CO2 fluxes was controlled by ice temperature (through its control on brine volume and brine channels connectivity) and the concentration gradient between brine and the atmosphere. However, the state of the ice-interface clearly affects air-ice CO2 fluxes. Article in Journal/Newspaper Amundsen Gulf Arctic Beaufort Sea Sea ice University of Liège: ORBi (Open Repository and Bibliography) Arctic Journal of Geophysical Research: Oceans 117 C9 n/a n/a |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Geilfus, Nicolas-Xavier Carnat, G. Papakyriakou, T. Tison, Jean-Louis Else, B. Thomas, H. Shadwick, E. Delille, Bruno Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed We present an Arctic seasonal survey of carbon dioxide partial pressure (pCO2) dynamics within sea ice brine and related air-ice CO2 fluxes. The survey was carried out from early spring to the beginning of summer in the Arctic coastal waters of the Amundsen Gulf. High concentrations of pCO2 (up to 1834 matm) were observed in the sea ice in early April as a consequence of concentration of solutes in brines, CaCO3 precipitation and microbial respiration. CaCO3 precipitation was detected through anomalies in total alkalinity (TA) and dissolved inorganic carbon (DIC). This precipitation seems to have occurred in highly saline brine in the upper part of the ice cover and in bulk ice. As summer draws near, the ice temperature increases and brine pCO2 shifts from a large supersaturation (1834 matm) to a marked undersaturation (down to almost 0 matm). This decrease was ascribed to brine dilution by ice meltwater, dissolution of CaCO3 and photosynthesis during the sympagic algal bloom. The magnitude of the CO2 fluxes was controlled by ice temperature (through its control on brine volume and brine channels connectivity) and the concentration gradient between brine and the atmosphere. However, the state of the ice-interface clearly affects air-ice CO2 fluxes. |
author2 |
Unité d'Océanographie Chimique |
format |
Article in Journal/Newspaper |
author |
Geilfus, Nicolas-Xavier Carnat, G. Papakyriakou, T. Tison, Jean-Louis Else, B. Thomas, H. Shadwick, E. Delille, Bruno |
author_facet |
Geilfus, Nicolas-Xavier Carnat, G. Papakyriakou, T. Tison, Jean-Louis Else, B. Thomas, H. Shadwick, E. Delille, Bruno |
author_sort |
Geilfus, Nicolas-Xavier |
title |
Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
title_short |
Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
title_full |
Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
title_fullStr |
Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
title_full_unstemmed |
Dynamics of pCO2 and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea) |
title_sort |
dynamics of pco2 and related air-ice co2 fluxes in the arctic coastal zone (amundsen gulf, beaufort sea) |
publisher |
American Geophysical Union (AGU) |
publishDate |
2012 |
url |
https://orbi.uliege.be/handle/2268/125925 https://doi.org/10.1029/2011JC007118 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Amundsen Gulf Arctic Beaufort Sea Sea ice |
genre_facet |
Amundsen Gulf Arctic Beaufort Sea Sea ice |
op_source |
Journal of Geophysical Research. Oceans, 117 (C00G10) (2012-02-02) |
op_relation |
urn:issn:2169-9275 urn:issn:2169-9291 https://orbi.uliege.be/handle/2268/125925 info:hdl:2268/125925 doi:10.1029/2011JC007118 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2011JC007118 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C9 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1812809335379591168 |