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Role of sea ice, stratification, and near-inertial oscillations in shaping the upper Siberian Arctic Ocean currents

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dc.contributor.authorI.V. Polyakov-
dc.contributor.authorA.V. Pnyushkov-
dc.contributor.authorE.C. Carmack-
dc.contributor.authorM. Charette-
dc.contributor.authorCho, Kyoung-Ho-
dc.contributor.authorS. Dykstra-
dc.contributor.authorJ. Haapala-
dc.contributor.authorJung, Jinyoung-
dc.contributor.authorL. Kipp-
dc.contributor.authorYang, Eun Jin-
dc.contributor.authorS. Molodtsov-
dc.date.accessioned2026-02-10T04:08:26Z-
dc.date.available2026-02-10T04:08:26Z-
dc.date.issued2025-11-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/16594-
dc.description.abstractThe Siberian Arctic Ocean (SAO) is the largest integrator and redistributor of Siberian freshwater resources and acts to significantly influence the Arctic climate system. Moreover, the SAO is experiencing some of the most notable climate changes in the Arctic, and advection of anomalous Atlantic-(atlantification) and Pacific-origin (pacification) inflow waters and biota continue to play a major role in reshaping the SAO in recent decades. In this study, we use a large collection of mooring data to create a coherent picture of the spatiotemporal patterns and variability of currents and shear in the upper SAO during the past decade. Although there was no noticeable trend in the upper SAO’s current speed and shear from 2013 to 2023, their seasonal cycle has significantly strengthened. The cycle reveals a strong relationship between upper ocean currents and their shear with sea ice conditions ? particularly during transitional seasons ? evidenced by a strong negative correlation (?0.94) between seasonal sea ice concentration and current shear. In the shallow (<20?30 m) summer surface mixed layer, currents have increased because strong stratification prevents wind energy from propagating into the deeper layers. In this case, strong near-inertial currents account for more than half of the summertime current speed and shear. In the winter, a thicker surface layer is created by deep upper SAO ventilation due to atlantification, which distributes wind energy to far deeper (>100 m) layers. These findings are critical to understanding the ramifications for mixing and halocline weakening, as well as the rate of atlantification in the region.en_US
dc.languageEnglishen_US
dc.subject.classificationAraonen_US
dc.titleRole of sea ice, stratification, and near-inertial oscillations in shaping the upper Siberian Arctic Ocean currentsen_US
dc.title.alternative시베리아 북극해 상층 해류 형성에 대한 해빙, 성층, 근 관성진동의 역할en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationI.V. Polyakov, et al. 2025. "Role of sea ice, stratification, and near-inertial oscillations in shaping the upper Siberian Arctic Ocean currents". <em>Ocean Science</em>, 21(6): 3105-3122.-
dc.citation.titleOcean Scienceen_US
dc.citation.volume21en_US
dc.citation.number6en_US
dc.identifier.doihttps://doi.org/10.5194/os-21-3105-2025-
dc.citation.startPage3105en_US
dc.citation.endPage3122en_US
dc.description.articleClassificationSCIE-
dc.description.jcrRateJCR 2023:0en_US
dc.subject.keywordSiberian Arctic Oceanen_US
dc.subject.keywordatlantificationen_US
dc.subject.keywordhalocline weakeningen_US
dc.identifier.localId2025-0256-
Appears in Collections  
2025-2025, 북극해 온난화-해양생태계 변화 감시 및 미래전망 연구 (25-25) / 양은진 (PM25040)
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