Modelling argon dynamics in first-year sea ice
peer reviewed Abstract: Focusing on physical processes, we aim at constraining the dynamics of argon (Ar), a biogeochemically inert gas, within first year sea ice, using observation data and a one-dimensional halo-thermodynamic sea ice model, including parameterization of gas physics. The incorporat...
Published in: | Ocean Modelling |
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Language: | English |
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Elsevier Science
2014
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Online Access: | https://orbi.uliege.be/handle/2268/157280 https://orbi.uliege.be/bitstream/2268/157280/1/Pages%20de%20OCEMOD-D-12-00175R5%20for%20orbi.pdf https://doi.org/10.1016/j.ocemod.2013.10.004 |
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ftorbi:oai:orbi.ulg.ac.be:2268/157280 2024-10-13T14:06:19+00:00 Modelling argon dynamics in first-year sea ice Moreau, S. Vancoppenolle, M Zhou, Jiayun Tison, Jean-Louis Delille, Bruno Goosse, H. 2014-01 https://orbi.uliege.be/handle/2268/157280 https://orbi.uliege.be/bitstream/2268/157280/1/Pages%20de%20OCEMOD-D-12-00175R5%20for%20orbi.pdf https://doi.org/10.1016/j.ocemod.2013.10.004 en eng Elsevier Science http://www.sciencedirect.com/science/article/pii/S1463500313001856 urn:issn:1463-5003 urn:issn:1463-5011 https://orbi.uliege.be/handle/2268/157280 info:hdl:2268/157280 doi:10.1016/j.ocemod.2013.10.004 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Ocean Modelling, 73, 1-18 (2014-01) Argon Sea ice Modelling Gas bubbles Gas exchange 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 2014 ftorbi https://doi.org/10.1016/j.ocemod.2013.10.004 2024-09-27T07:01:47Z peer reviewed Abstract: Focusing on physical processes, we aim at constraining the dynamics of argon (Ar), a biogeochemically inert gas, within first year sea ice, using observation data and a one-dimensional halo-thermodynamic sea ice model, including parameterization of gas physics. The incorporation and transport of dissolved Ar within sea ice and its rejection via gas-enriched brine drainage to the ocean, are modeled following fluid transport equations through sea ice. Gas bubbles nucleate within sea ice when Ar is above saturation and when the total partial pressure of all three major atmospheric gases (N2, O2 and Ar) is above the brine hydrostatic pressure. The uplift of gas bubbles due to buoyancy is allowed when the brine network is connected with a brine volume above a given threshold. Ice-atmosphere Ar fluxes are formulated as a diffusive process proportional to the differential partial pressure of Ar between brine inclusions and the atmosphere. Two simulations corresponding to two case studies that took place at Point Barrow (Alaska, 2009) and during an ice-tank experiment (INTERICE IV, Hamburg, Germany, 2009) are presented. Basal entrapment and vertical transport due to brine motion enable a qualitatively sound representation of the vertical profile of the total Ar (i.e. the Ar dissolved in brine inclusions and contained in gas bubbles; TAr). Sensitivity analyses suggest that gas bubble nucleation and rise are of most importance to describe gas dynamics within sea ice. Ice-atmosphere Ar fluxes and the associated parameters do not drastically change the simulated TAr. Ar dynamics are dominated by uptake, transport by brine dynamics and bubble nucleation in winter and early spring; and by an intense and rapid release of gas bubbles to the atmosphere in spring. Important physical processes driving gas dynamics in sea ice are identified, pointing to the need for further field and experimental studies. Bigsouth Article in Journal/Newspaper Barrow Point Barrow Sea ice Alaska University of Liège: ORBi (Open Repository and Bibliography) Ocean Modelling 73 1 18 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Argon Sea ice Modelling Gas bubbles Gas exchange Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Argon Sea ice Modelling Gas bubbles Gas exchange Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Moreau, S. Vancoppenolle, M Zhou, Jiayun Tison, Jean-Louis Delille, Bruno Goosse, H. Modelling argon dynamics in first-year sea ice |
topic_facet |
Argon Sea ice Modelling Gas bubbles Gas exchange 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 Abstract: Focusing on physical processes, we aim at constraining the dynamics of argon (Ar), a biogeochemically inert gas, within first year sea ice, using observation data and a one-dimensional halo-thermodynamic sea ice model, including parameterization of gas physics. The incorporation and transport of dissolved Ar within sea ice and its rejection via gas-enriched brine drainage to the ocean, are modeled following fluid transport equations through sea ice. Gas bubbles nucleate within sea ice when Ar is above saturation and when the total partial pressure of all three major atmospheric gases (N2, O2 and Ar) is above the brine hydrostatic pressure. The uplift of gas bubbles due to buoyancy is allowed when the brine network is connected with a brine volume above a given threshold. Ice-atmosphere Ar fluxes are formulated as a diffusive process proportional to the differential partial pressure of Ar between brine inclusions and the atmosphere. Two simulations corresponding to two case studies that took place at Point Barrow (Alaska, 2009) and during an ice-tank experiment (INTERICE IV, Hamburg, Germany, 2009) are presented. Basal entrapment and vertical transport due to brine motion enable a qualitatively sound representation of the vertical profile of the total Ar (i.e. the Ar dissolved in brine inclusions and contained in gas bubbles; TAr). Sensitivity analyses suggest that gas bubble nucleation and rise are of most importance to describe gas dynamics within sea ice. Ice-atmosphere Ar fluxes and the associated parameters do not drastically change the simulated TAr. Ar dynamics are dominated by uptake, transport by brine dynamics and bubble nucleation in winter and early spring; and by an intense and rapid release of gas bubbles to the atmosphere in spring. Important physical processes driving gas dynamics in sea ice are identified, pointing to the need for further field and experimental studies. Bigsouth |
format |
Article in Journal/Newspaper |
author |
Moreau, S. Vancoppenolle, M Zhou, Jiayun Tison, Jean-Louis Delille, Bruno Goosse, H. |
author_facet |
Moreau, S. Vancoppenolle, M Zhou, Jiayun Tison, Jean-Louis Delille, Bruno Goosse, H. |
author_sort |
Moreau, S. |
title |
Modelling argon dynamics in first-year sea ice |
title_short |
Modelling argon dynamics in first-year sea ice |
title_full |
Modelling argon dynamics in first-year sea ice |
title_fullStr |
Modelling argon dynamics in first-year sea ice |
title_full_unstemmed |
Modelling argon dynamics in first-year sea ice |
title_sort |
modelling argon dynamics in first-year sea ice |
publisher |
Elsevier Science |
publishDate |
2014 |
url |
https://orbi.uliege.be/handle/2268/157280 https://orbi.uliege.be/bitstream/2268/157280/1/Pages%20de%20OCEMOD-D-12-00175R5%20for%20orbi.pdf https://doi.org/10.1016/j.ocemod.2013.10.004 |
genre |
Barrow Point Barrow Sea ice Alaska |
genre_facet |
Barrow Point Barrow Sea ice Alaska |
op_source |
Ocean Modelling, 73, 1-18 (2014-01) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1463500313001856 urn:issn:1463-5003 urn:issn:1463-5011 https://orbi.uliege.be/handle/2268/157280 info:hdl:2268/157280 doi:10.1016/j.ocemod.2013.10.004 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.ocemod.2013.10.004 |
container_title |
Ocean Modelling |
container_volume |
73 |
container_start_page |
1 |
op_container_end_page |
18 |
_version_ |
1812812397908328448 |