Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases
peer reviewed Although studies of biogeochemical processes in polar sea ice have been increasing, similar research on relatively warm low-salinity sea ice remains sparse. In this study, we investigated biogeochemical properties of the landfast sea ice cover in the brackish Bothnian Bay (Northern Bal...
Published in: | Elementa: Science of the Anthropocene |
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Format: | Article in Journal/Newspaper |
Language: | English |
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University of California Press
2021
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Online Access: | https://orbi.uliege.be/handle/2268/267723 https://orbi.uliege.be/bitstream/2268/267723/1/elementa.2021.00028.pdf https://doi.org/10.1525/elementa.2021.00028 |
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ftorbi:oai:orbi.ulg.ac.be:2268/267723 2024-04-21T08:11:05+00:00 Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, Bruno FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2021 https://orbi.uliege.be/handle/2268/267723 https://orbi.uliege.be/bitstream/2268/267723/1/elementa.2021.00028.pdf https://doi.org/10.1525/elementa.2021.00028 en eng University of California Press https://online.ucpress.edu/elementa/article/9/1/00028/118996/Landfast-sea-ice-in-the-Bothnian-Bay-Baltic-Sea-as urn:issn:2325-1026 https://orbi.uliege.be/handle/2268/267723 info:hdl:2268/267723 https://orbi.uliege.be/bitstream/2268/267723/1/elementa.2021.00028.pdf doi:10.1525/elementa.2021.00028 scopus-id:2-s2.0-85121278353 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Elementa: Science of the Anthropocene, 9 (1) (2021) Baltic Sea Bothnian Bay CH4 CO2 Greenhouse gases Sea ice Atlantic Ocean Bay Gulf of Bothnia Somalia 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 2021 ftorbi https://doi.org/10.1525/elementa.2021.00028 2024-03-27T14:59:50Z peer reviewed Although studies of biogeochemical processes in polar sea ice have been increasing, similar research on relatively warm low-salinity sea ice remains sparse. In this study, we investigated biogeochemical properties of the landfast sea ice cover in the brackish Bothnian Bay (Northern Baltic Sea) and the possible role of this sea ice in mediating the exchange of greenhouse gases, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) across the water column–sea ice–atmosphere interface. Observations of total alkalinity and dissolved inorganic carbon in both landfast sea ice and the water column suggest that the carbonate system is mainly driven by salinity. While high CH4 and N2O concentrations were observed in both the water column (up to 14.3 and 17.5 nmol L–1, respectively) and the sea ice (up to 143.6 and 22.4 nmol L–1, respectively),these gases appear to be enriched in sea ice compared to the water column.This enrichment may be attributable to the sea ice formation process, which concentrates impurities within brine. As sea ice temperature and brine volume decrease, gas solubility decreases as well, promoting the formation of bubbles. Gas bubbles originating from underlying sediments may also be incorporated within the ice cover and contribute to the enrichment in sea ice.The fate of these greenhouse gases within the ice merits further research, as storage in this low-salinity seasonal sea ice is temporary. Copyright: © 2021 The Author(s). Article in Journal/Newspaper Sea ice University of Liège: ORBi (Open Repository and Bibliography) Elementa: Science of the Anthropocene 9 1 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Baltic Sea Bothnian Bay CH4 CO2 Greenhouse gases Sea ice Atlantic Ocean Bay Gulf of Bothnia Somalia Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Baltic Sea Bothnian Bay CH4 CO2 Greenhouse gases Sea ice Atlantic Ocean Bay Gulf of Bothnia Somalia Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, Bruno Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
topic_facet |
Baltic Sea Bothnian Bay CH4 CO2 Greenhouse gases Sea ice Atlantic Ocean Bay Gulf of Bothnia Somalia 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 Although studies of biogeochemical processes in polar sea ice have been increasing, similar research on relatively warm low-salinity sea ice remains sparse. In this study, we investigated biogeochemical properties of the landfast sea ice cover in the brackish Bothnian Bay (Northern Baltic Sea) and the possible role of this sea ice in mediating the exchange of greenhouse gases, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) across the water column–sea ice–atmosphere interface. Observations of total alkalinity and dissolved inorganic carbon in both landfast sea ice and the water column suggest that the carbonate system is mainly driven by salinity. While high CH4 and N2O concentrations were observed in both the water column (up to 14.3 and 17.5 nmol L–1, respectively) and the sea ice (up to 143.6 and 22.4 nmol L–1, respectively),these gases appear to be enriched in sea ice compared to the water column.This enrichment may be attributable to the sea ice formation process, which concentrates impurities within brine. As sea ice temperature and brine volume decrease, gas solubility decreases as well, promoting the formation of bubbles. Gas bubbles originating from underlying sediments may also be incorporated within the ice cover and contribute to the enrichment in sea ice.The fate of these greenhouse gases within the ice merits further research, as storage in this low-salinity seasonal sea ice is temporary. Copyright: © 2021 The Author(s). |
author2 |
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Article in Journal/Newspaper |
author |
Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, Bruno |
author_facet |
Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, Bruno |
author_sort |
Geilfus, N.-X. |
title |
Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
title_short |
Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
title_full |
Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
title_fullStr |
Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
title_full_unstemmed |
Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
title_sort |
landfast sea ice in the bothnian bay (baltic sea) as a temporary storage compartment for greenhouse gases |
publisher |
University of California Press |
publishDate |
2021 |
url |
https://orbi.uliege.be/handle/2268/267723 https://orbi.uliege.be/bitstream/2268/267723/1/elementa.2021.00028.pdf https://doi.org/10.1525/elementa.2021.00028 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Elementa: Science of the Anthropocene, 9 (1) (2021) |
op_relation |
https://online.ucpress.edu/elementa/article/9/1/00028/118996/Landfast-sea-ice-in-the-Bothnian-Bay-Baltic-Sea-as urn:issn:2325-1026 https://orbi.uliege.be/handle/2268/267723 info:hdl:2268/267723 https://orbi.uliege.be/bitstream/2268/267723/1/elementa.2021.00028.pdf doi:10.1525/elementa.2021.00028 scopus-id:2-s2.0-85121278353 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1525/elementa.2021.00028 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
9 |
container_issue |
1 |
_version_ |
1796952745557622784 |