Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard
Summer sea ice cover in the Arctic Ocean has declined sharply during the last decades, leading to changes in ice structures. The shift from thicker multi-year ice to thinner first-year ice changes the methane storage transported by sea ice into remote areas far away from its origin. As significant a...
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Copernicus Publications
2021
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fttriple:oai:gotriple.eu:oai:doaj.org/article:11372804d78d42f0923123fd53de7668 2023-05-15T15:05:00+02:00 Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard J. Verdugo E. Damm A. Nikolopoulos 2021-06-01 https://doi.org/10.5194/tc-15-2701-2021 https://tc.copernicus.org/articles/15/2701/2021/tc-15-2701-2021.pdf https://doaj.org/article/11372804d78d42f0923123fd53de7668 en eng Copernicus Publications doi:10.5194/tc-15-2701-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/2701/2021/tc-15-2701-2021.pdf https://doaj.org/article/11372804d78d42f0923123fd53de7668 undefined The Cryosphere, Vol 15, Pp 2701-2717 (2021) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-2701-2021 2023-01-22T19:30:37Z Summer sea ice cover in the Arctic Ocean has declined sharply during the last decades, leading to changes in ice structures. The shift from thicker multi-year ice to thinner first-year ice changes the methane storage transported by sea ice into remote areas far away from its origin. As significant amounts of methane are stored in sea ice, minimal changes in the ice structure may have a strong impact on the fate of methane when ice melts. Hence, sea ice type is an important indicator of modifications to methane pathways. Based on measurements of methane concentration and its isotopic composition on a drifting ice floe, we report on different storage capacities of methane within first-year ice and ridged/rafted ice, as well as methane supersaturation in the seawater. During this early melt season, we show that ice type and/or structure determines the fate of methane and that methane released into seawater is a predominant pathway. We suggest that sea ice loaded with methane acts as a source of methane for polar surface waters during late spring. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Svalbard The Cryosphere Unknown Arctic Arctic Ocean Svalbard The Cryosphere 15 6 2701 2717 |
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envir geo J. Verdugo E. Damm A. Nikolopoulos Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
topic_facet |
envir geo |
description |
Summer sea ice cover in the Arctic Ocean has declined sharply during the last decades, leading to changes in ice structures. The shift from thicker multi-year ice to thinner first-year ice changes the methane storage transported by sea ice into remote areas far away from its origin. As significant amounts of methane are stored in sea ice, minimal changes in the ice structure may have a strong impact on the fate of methane when ice melts. Hence, sea ice type is an important indicator of modifications to methane pathways. Based on measurements of methane concentration and its isotopic composition on a drifting ice floe, we report on different storage capacities of methane within first-year ice and ridged/rafted ice, as well as methane supersaturation in the seawater. During this early melt season, we show that ice type and/or structure determines the fate of methane and that methane released into seawater is a predominant pathway. We suggest that sea ice loaded with methane acts as a source of methane for polar surface waters during late spring. |
format |
Article in Journal/Newspaper |
author |
J. Verdugo E. Damm A. Nikolopoulos |
author_facet |
J. Verdugo E. Damm A. Nikolopoulos |
author_sort |
J. Verdugo |
title |
Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
title_short |
Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
title_full |
Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
title_fullStr |
Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
title_full_unstemmed |
Methane cycling within sea ice: results from drifting ice during late spring, north of Svalbard |
title_sort |
methane cycling within sea ice: results from drifting ice during late spring, north of svalbard |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-2701-2021 https://tc.copernicus.org/articles/15/2701/2021/tc-15-2701-2021.pdf https://doaj.org/article/11372804d78d42f0923123fd53de7668 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Sea ice Svalbard The Cryosphere |
genre_facet |
Arctic Arctic Ocean Sea ice Svalbard The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 2701-2717 (2021) |
op_relation |
doi:10.5194/tc-15-2701-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/2701/2021/tc-15-2701-2021.pdf https://doaj.org/article/11372804d78d42f0923123fd53de7668 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-15-2701-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
6 |
container_start_page |
2701 |
op_container_end_page |
2717 |
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1766336777853861888 |