Methane release from open leads and new ice following an Arctic winter storm event
Methane release from open leads and new ice following an Arctic winter storm event
复制标题
北极冬季风暴事件后,裸露的引线和新冰释放出甲烷
DOI:
10.1016/j.polar.2022.100874
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发表时间:
2022
期刊:
影响因子:
1.8
通讯作者:
Granskog Mats A.
中科院分区:
文献类型:
--
作者:
Silyakova Anna;Nomura Daiki;Kotovitch Marie;Fransson Agneta;Delille Bruno;Chierici Melissa;Granskog Mats A.
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 CH4flux ranging from +0.2 to +2.1 mg CH4m−2d−1in open leads. CH4ventilation 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, CH4concentrations in the sea ice brine were above the equilibrium with the atmosphere. As the ice grew thicker, most of the CH4was lost from upper layers of sea ice into the atmosphere, implying continued CH4evasion after the leads were ice–covered. This suggests that wintertime CH4emissions need to be better constrained.
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DOI:
10.1002/essoar.10502449.1
发表时间:
2020
期刊:
影响因子:
--
作者:
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J. Prytherch
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--
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--
期刊:
影响因子:
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--
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作者:
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