N2O dynamics in the western Arctic Ocean during the summer of 2017
Abstract The western Arctic Ocean (WAO) has experienced increased heat transport into the region, sea-ice reduction, and changes to the WAO nitrous oxide (N2O) cycles from greenhouse gases. We investigated WAO N2O dynamics through an intensive and precise N2O survey during the open-water season of s...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-92009-1 |
| _version_ | 1818722533908676608 |
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| author | Jang-Mu Heo Seong-Su Kim Sung-Ho Kang Eun Jin Yang Ki-Tae Park Jinyoung Jung Kyoung-Ho Cho Ju-Hyoung Kim Alison M. Macdonald Joo-Eun Yoon Hyo-Ryeon Kim Sang-Min Eom Jae-Hyun Lim Il-Nam Kim |
| author_facet | Jang-Mu Heo Seong-Su Kim Sung-Ho Kang Eun Jin Yang Ki-Tae Park Jinyoung Jung Kyoung-Ho Cho Ju-Hyoung Kim Alison M. Macdonald Joo-Eun Yoon Hyo-Ryeon Kim Sang-Min Eom Jae-Hyun Lim Il-Nam Kim |
| author_sort | Jang-Mu Heo |
| collection | DOAJ |
| description | Abstract The western Arctic Ocean (WAO) has experienced increased heat transport into the region, sea-ice reduction, and changes to the WAO nitrous oxide (N2O) cycles from greenhouse gases. We investigated WAO N2O dynamics through an intensive and precise N2O survey during the open-water season of summer 2017. The effects of physical processes (i.e., solubility and advection) were dominant in both the surface (0–50 m) and deep layers (200–2200 m) of the northern Chukchi Sea with an under-saturation of N2O. By contrast, both the surface layer (0–50 m) of the southern Chukchi Sea and the intermediate (50–200 m) layer of the northern Chukchi Sea were significantly influenced by biogeochemically derived N2O production (i.e., through nitrification), with N2O over-saturation. During summer 2017, the southern region acted as a source of atmospheric N2O (mean: + 2.3 ± 2.7 μmol N2O m−2 day−1), whereas the northern region acted as a sink (mean − 1.3 ± 1.5 μmol N2O m−2 day−1). If Arctic environmental changes continue to accelerate and consequently drive the productivity of the Arctic Ocean, the WAO may become a N2O “hot spot”, and therefore, a key region requiring continued observations to both understand N2O dynamics and possibly predict their future changes. |
| first_indexed | 2024-12-17T20:56:09Z |
| format | Article |
| id | doaj.art-6eeb2c55c09e412fb88519f465343cb7 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-17T20:56:09Z |
| publishDate | 2021-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6eeb2c55c09e412fb88519f465343cb72022-12-21T21:32:53ZengNature PortfolioScientific Reports2045-23222021-06-0111111210.1038/s41598-021-92009-1N2O dynamics in the western Arctic Ocean during the summer of 2017Jang-Mu Heo0Seong-Su Kim1Sung-Ho Kang2Eun Jin Yang3Ki-Tae Park4Jinyoung Jung5Kyoung-Ho Cho6Ju-Hyoung Kim7Alison M. Macdonald8Joo-Eun Yoon9Hyo-Ryeon Kim10Sang-Min Eom11Jae-Hyun Lim12Il-Nam Kim13Department of Marine Science, Incheon National UniversityDepartment of Marine Science, Incheon National UniversityKorea Polar Research InstituteKorea Polar Research InstituteKorea Polar Research InstituteKorea Polar Research InstituteKorea Polar Research InstituteFaculty of Marine Applied Biosciences, Kunsan National UniversityPhysical Oceanography Department, Woods Hole Oceanographic InstitutionDepartment of Marine Science, Incheon National UniversityDepartment of Marine Science, Incheon National UniversityDepartment of Marine Science, Incheon National UniversityFisheries Resources and Environmental Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries ScienceDepartment of Marine Science, Incheon National UniversityAbstract The western Arctic Ocean (WAO) has experienced increased heat transport into the region, sea-ice reduction, and changes to the WAO nitrous oxide (N2O) cycles from greenhouse gases. We investigated WAO N2O dynamics through an intensive and precise N2O survey during the open-water season of summer 2017. The effects of physical processes (i.e., solubility and advection) were dominant in both the surface (0–50 m) and deep layers (200–2200 m) of the northern Chukchi Sea with an under-saturation of N2O. By contrast, both the surface layer (0–50 m) of the southern Chukchi Sea and the intermediate (50–200 m) layer of the northern Chukchi Sea were significantly influenced by biogeochemically derived N2O production (i.e., through nitrification), with N2O over-saturation. During summer 2017, the southern region acted as a source of atmospheric N2O (mean: + 2.3 ± 2.7 μmol N2O m−2 day−1), whereas the northern region acted as a sink (mean − 1.3 ± 1.5 μmol N2O m−2 day−1). If Arctic environmental changes continue to accelerate and consequently drive the productivity of the Arctic Ocean, the WAO may become a N2O “hot spot”, and therefore, a key region requiring continued observations to both understand N2O dynamics and possibly predict their future changes.https://doi.org/10.1038/s41598-021-92009-1 |
| spellingShingle | Jang-Mu Heo Seong-Su Kim Sung-Ho Kang Eun Jin Yang Ki-Tae Park Jinyoung Jung Kyoung-Ho Cho Ju-Hyoung Kim Alison M. Macdonald Joo-Eun Yoon Hyo-Ryeon Kim Sang-Min Eom Jae-Hyun Lim Il-Nam Kim N2O dynamics in the western Arctic Ocean during the summer of 2017 Scientific Reports |
| title | N2O dynamics in the western Arctic Ocean during the summer of 2017 |
| title_full | N2O dynamics in the western Arctic Ocean during the summer of 2017 |
| title_fullStr | N2O dynamics in the western Arctic Ocean during the summer of 2017 |
| title_full_unstemmed | N2O dynamics in the western Arctic Ocean during the summer of 2017 |
| title_short | N2O dynamics in the western Arctic Ocean during the summer of 2017 |
| title_sort | n2o dynamics in the western arctic ocean during the summer of 2017 |
| url | https://doi.org/10.1038/s41598-021-92009-1 |
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