Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases
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 t...
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University of California Press
2021
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Online Access: | http://dx.doi.org/10.1525/elementa.2021.00028 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00028/485136/elementa.2021.00028.pdf |
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crunicaliforniap:10.1525/elementa.2021.00028 2023-08-27T04:11:52+02:00 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, B. 2021 http://dx.doi.org/10.1525/elementa.2021.00028 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00028/485136/elementa.2021.00028.pdf en eng University of California Press http://creativecommons.org/licenses/by/4.0/ Elementa: Science of the Anthropocene volume 9, issue 1 ISSN 2325-1026 Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography journal-article 2021 crunicaliforniap https://doi.org/10.1525/elementa.2021.00028 2023-08-04T13:23:40Z 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. Article in Journal/Newspaper Sea ice University of California Press (via Crossref) Elementa: Science of the Anthropocene 9 1 |
institution |
Open Polar |
collection |
University of California Press (via Crossref) |
op_collection_id |
crunicaliforniap |
language |
English |
topic |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography |
spellingShingle |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, B. Landfast sea ice in the Bothnian Bay (Baltic Sea) as a temporary storage compartment for greenhouse gases |
topic_facet |
Atmospheric Science Geology Geotechnical Engineering and Engineering Geology Ecology Environmental Engineering Oceanography |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, B. |
author_facet |
Geilfus, N.-X. Munson, K. M. Eronen-Rasimus, E. Kaartokallio, H. Lemes, M. Wang, F. Rysgaard, S. Delille, B. |
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 |
http://dx.doi.org/10.1525/elementa.2021.00028 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00028/485136/elementa.2021.00028.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Elementa: Science of the Anthropocene volume 9, issue 1 ISSN 2325-1026 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1525/elementa.2021.00028 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
9 |
container_issue |
1 |
_version_ |
1775355485824745472 |