Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean)
Abstract Methane (CH4) is a climate‐relevant trace gas that is emitted from the open and coastal oceans in considerable amounts. However, its distribution in remote oceanic areas is largely unknown. To fill this knowledge gap, dissolved CH4 was measured at nine stations at 75°S in the Ross Sea durin...
Published in: | Limnology and Oceanography Letters |
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ftdoajarticles:oai:doaj.org/article:bf3548f9febc4ca29e46928f8cab1fee 2023-05-15T18:07:30+02:00 Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) Wangwang Ye Damian L. Arévalo‐Martínez Yuhong Li Jianwen Wen Hailun He Jiexia Zhang Jian Liu Man Wu Liyang Zhan 2023-04-01T00:00:00Z https://doi.org/10.1002/lol2.10315 https://doaj.org/article/bf3548f9febc4ca29e46928f8cab1fee EN eng Wiley https://doi.org/10.1002/lol2.10315 https://doaj.org/toc/2378-2242 2378-2242 doi:10.1002/lol2.10315 https://doaj.org/article/bf3548f9febc4ca29e46928f8cab1fee Limnology and Oceanography Letters, Vol 8, Iss 2, Pp 305-312 (2023) Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.1002/lol2.10315 2023-03-19T01:29:27Z Abstract Methane (CH4) is a climate‐relevant trace gas that is emitted from the open and coastal oceans in considerable amounts. However, its distribution in remote oceanic areas is largely unknown. To fill this knowledge gap, dissolved CH4 was measured at nine stations at 75°S in the Ross Sea during austral summer in January 2020. CH4 undersaturation (mean: 82 ± 20%) was found throughout the water column. In subsurface waters, the distribution of CH4 mainly resulted from mixing of water masses and in situ consumption, whereas the CH4 concentrations in the surface mixed layer were mainly driven by air–sea exchange and diapycnal diffusion between the surface and subsurface layers, as well as consumption of CH4. With a mean air–sea CH4 flux density of −0.44 ± 0.34 μmol m−2 d−1, the Ross Sea was a substantial sink for atmospheric CH4 during austral summer, which is in contrast with most oceanic regions, which are known sources. Article in Journal/Newspaper Ross Sea Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Austral Ross Sea Limnology and Oceanography Letters 8 2 305 312 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Oceanography GC1-1581 |
spellingShingle |
Oceanography GC1-1581 Wangwang Ye Damian L. Arévalo‐Martínez Yuhong Li Jianwen Wen Hailun He Jiexia Zhang Jian Liu Man Wu Liyang Zhan Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
topic_facet |
Oceanography GC1-1581 |
description |
Abstract Methane (CH4) is a climate‐relevant trace gas that is emitted from the open and coastal oceans in considerable amounts. However, its distribution in remote oceanic areas is largely unknown. To fill this knowledge gap, dissolved CH4 was measured at nine stations at 75°S in the Ross Sea during austral summer in January 2020. CH4 undersaturation (mean: 82 ± 20%) was found throughout the water column. In subsurface waters, the distribution of CH4 mainly resulted from mixing of water masses and in situ consumption, whereas the CH4 concentrations in the surface mixed layer were mainly driven by air–sea exchange and diapycnal diffusion between the surface and subsurface layers, as well as consumption of CH4. With a mean air–sea CH4 flux density of −0.44 ± 0.34 μmol m−2 d−1, the Ross Sea was a substantial sink for atmospheric CH4 during austral summer, which is in contrast with most oceanic regions, which are known sources. |
format |
Article in Journal/Newspaper |
author |
Wangwang Ye Damian L. Arévalo‐Martínez Yuhong Li Jianwen Wen Hailun He Jiexia Zhang Jian Liu Man Wu Liyang Zhan |
author_facet |
Wangwang Ye Damian L. Arévalo‐Martínez Yuhong Li Jianwen Wen Hailun He Jiexia Zhang Jian Liu Man Wu Liyang Zhan |
author_sort |
Wangwang Ye |
title |
Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
title_short |
Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
title_full |
Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
title_fullStr |
Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
title_full_unstemmed |
Significant methane undersaturation during austral summer in the Ross Sea (Southern Ocean) |
title_sort |
significant methane undersaturation during austral summer in the ross sea (southern ocean) |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1002/lol2.10315 https://doaj.org/article/bf3548f9febc4ca29e46928f8cab1fee |
geographic |
Southern Ocean Austral Ross Sea |
geographic_facet |
Southern Ocean Austral Ross Sea |
genre |
Ross Sea Southern Ocean |
genre_facet |
Ross Sea Southern Ocean |
op_source |
Limnology and Oceanography Letters, Vol 8, Iss 2, Pp 305-312 (2023) |
op_relation |
https://doi.org/10.1002/lol2.10315 https://doaj.org/toc/2378-2242 2378-2242 doi:10.1002/lol2.10315 https://doaj.org/article/bf3548f9febc4ca29e46928f8cab1fee |
op_doi |
https://doi.org/10.1002/lol2.10315 |
container_title |
Limnology and Oceanography Letters |
container_volume |
8 |
container_issue |
2 |
container_start_page |
305 |
op_container_end_page |
312 |
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1766179636744552448 |