Methane release from open leads and new ice following an Arctic winter storm event
We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and the subsequent freezing of these leads. The methane (CH4) concentration in under–ice surface water before and during the storm event was 8–12 nmol L−1, which resulted in a potential sea–to–air CH4 fl...
Published in: | Polar Science |
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ftnipr:oai:nipr.repo.nii.ac.jp:00016971 2023-05-15T14:49:36+02:00 Methane release from open leads and new ice following an Arctic winter storm event 2022-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16971 http://id.nii.ac.jp/1291/00016840/ en eng https://doi.org/10.1016/j.polar.2022.100874 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16971 http://id.nii.ac.jp/1291/00016840/ Polar Science, 33, 100874(2022-09) 18739652 Methane Arctic ocean Sea ice Wintertime Storm Journal Article 2022 ftnipr https://doi.org/10.1016/j.polar.2022.100874 2022-12-03T19:43:26Z We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and the subsequent freezing of these leads. The methane (CH4) concentration in under–ice surface water before and during the storm event was 8–12 nmol L−1, which resulted in a potential sea–to–air CH4 flux ranging from +0.2 to +2.1 mg CH4 m−2 d−1 in open leads. CH4 ventilation between seawater and atmosphere occurred when both open water fraction and wind speed increased. Over the nine days after the storm, sea ice grew 27 cm thick. Initially, CH4 concentrations in the sea ice brine were above the equilibrium with the atmosphere. As the ice grew thicker, most of the CH4 was lost from upper layers of sea ice into the atmosphere, implying continued CH4 evasion after the leads were ice–covered. This suggests that wintertime CH4 emissions need to be better constrained. Article in Journal/Newspaper Arctic Arctic Ocean Polar Science Polar Science Sea ice National Institute of Polar Research Repository, Japan Arctic Arctic Ocean Polar Science 33 100874 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Methane Arctic ocean Sea ice Wintertime Storm |
spellingShingle |
Methane Arctic ocean Sea ice Wintertime Storm Methane release from open leads and new ice following an Arctic winter storm event |
topic_facet |
Methane Arctic ocean Sea ice Wintertime Storm |
description |
We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and the subsequent freezing of these leads. The methane (CH4) concentration in under–ice surface water before and during the storm event was 8–12 nmol L−1, which resulted in a potential sea–to–air CH4 flux ranging from +0.2 to +2.1 mg CH4 m−2 d−1 in open leads. CH4 ventilation between seawater and atmosphere occurred when both open water fraction and wind speed increased. Over the nine days after the storm, sea ice grew 27 cm thick. Initially, CH4 concentrations in the sea ice brine were above the equilibrium with the atmosphere. As the ice grew thicker, most of the CH4 was lost from upper layers of sea ice into the atmosphere, implying continued CH4 evasion after the leads were ice–covered. This suggests that wintertime CH4 emissions need to be better constrained. |
format |
Article in Journal/Newspaper |
title |
Methane release from open leads and new ice following an Arctic winter storm event |
title_short |
Methane release from open leads and new ice following an Arctic winter storm event |
title_full |
Methane release from open leads and new ice following an Arctic winter storm event |
title_fullStr |
Methane release from open leads and new ice following an Arctic winter storm event |
title_full_unstemmed |
Methane release from open leads and new ice following an Arctic winter storm event |
title_sort |
methane release from open leads and new ice following an arctic winter storm event |
publishDate |
2022 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16971 http://id.nii.ac.jp/1291/00016840/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Polar Science Polar Science Sea ice |
genre_facet |
Arctic Arctic Ocean Polar Science Polar Science Sea ice |
op_relation |
https://doi.org/10.1016/j.polar.2022.100874 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16971 http://id.nii.ac.jp/1291/00016840/ Polar Science, 33, 100874(2022-09) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2022.100874 |
container_title |
Polar Science |
container_volume |
33 |
container_start_page |
100874 |
_version_ |
1766320686511423488 |