A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica
N2O is one of the most important greenhouse gases and ozone depletor, which was a matter of more and more concerned. The Southern Ocean was considered as one of the most important N2O source and was believed to account for ~1/4 of oceanic budget. However, there is uncertainty about this budget due t...
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| Format: | Article |
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Frontiers Media S.A.
2024-12-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1495913/full |
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| author | Man Wu Liyang Zhan Jian Liu Jiexia Zhang Wangwang Ye Bruno Delille |
| author_facet | Man Wu Liyang Zhan Jian Liu Jiexia Zhang Wangwang Ye Bruno Delille |
| author_sort | Man Wu |
| collection | DOAJ |
| description | N2O is one of the most important greenhouse gases and ozone depletor, which was a matter of more and more concerned. The Southern Ocean was considered as one of the most important N2O source and was believed to account for ~1/4 of oceanic budget. However, there is uncertainty about this budget due to limited data availability. In this study, field and lab works were conducted for better understanding of N2O dynamics during sea ice melting and sea ice formation. In the field study, taking advantage of the Chinese Antarctic cruise, a 10 days’ time series study was carried out at a station in the Prydz Bay, Antarctica, where, surface water N2O was observed continuously, and the adjacent ice cores were taken for N2O analysis. In the lab, an ice growing simulation system was constructed to study the N2O dynamics during the sea ice formation. The result of endmember mixing models and calculation of N2O partition in three phases during sea ice formation provide important information about the dynamics of N2O during ice melting and sea ice formation processes, that is, the sea ice melting regulated N2O concentration and saturation status, which can be an explanation for reported N2O undersaturation observed in polar oceans, whereas during the sea ice formation, most of the N2O will be expelled to the deeper water while a small amount of retain the sea ice and less amount of N2O release to the atmosphere. |
| format | Article |
| id | doaj-art-11c3d3499262473199ba78bbab79687e |
| institution | Kabale University |
| issn | 2296-7745 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj-art-11c3d3499262473199ba78bbab79687e2024-12-18T14:17:39ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-12-011110.3389/fmars.2024.14959131495913A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, AntarcticaMan Wu0Liyang Zhan1Jian Liu2Jiexia Zhang3Wangwang Ye4Bruno Delille5Key Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaKey Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaKey Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaKey Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaKey Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaUnité d’océanographie chimique, The Freshwater and OCeanic science Unit of reSearch (FOCUS), Universite de Liege, Liege, BelgiumN2O is one of the most important greenhouse gases and ozone depletor, which was a matter of more and more concerned. The Southern Ocean was considered as one of the most important N2O source and was believed to account for ~1/4 of oceanic budget. However, there is uncertainty about this budget due to limited data availability. In this study, field and lab works were conducted for better understanding of N2O dynamics during sea ice melting and sea ice formation. In the field study, taking advantage of the Chinese Antarctic cruise, a 10 days’ time series study was carried out at a station in the Prydz Bay, Antarctica, where, surface water N2O was observed continuously, and the adjacent ice cores were taken for N2O analysis. In the lab, an ice growing simulation system was constructed to study the N2O dynamics during the sea ice formation. The result of endmember mixing models and calculation of N2O partition in three phases during sea ice formation provide important information about the dynamics of N2O during ice melting and sea ice formation processes, that is, the sea ice melting regulated N2O concentration and saturation status, which can be an explanation for reported N2O undersaturation observed in polar oceans, whereas during the sea ice formation, most of the N2O will be expelled to the deeper water while a small amount of retain the sea ice and less amount of N2O release to the atmosphere.https://www.frontiersin.org/articles/10.3389/fmars.2024.1495913/fullsea icenitrous oxidePrydz BayPolar oceangreenhouse gas |
| spellingShingle | Man Wu Liyang Zhan Jian Liu Jiexia Zhang Wangwang Ye Bruno Delille A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica Frontiers in Marine Science sea ice nitrous oxide Prydz Bay Polar ocean greenhouse gas |
| title | A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica |
| title_full | A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica |
| title_fullStr | A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica |
| title_full_unstemmed | A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica |
| title_short | A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica |
| title_sort | study on the role of sea ice in the nitrous oxide cycle in the prydz bay antarctica |
| topic | sea ice nitrous oxide Prydz Bay Polar ocean greenhouse gas |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1495913/full |
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