Factors affecting the subsurface aragonite undersaturation layer in the Pacific Arctic region
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Title
- Factors affecting the subsurface aragonite undersaturation layer in the Pacific Arctic region
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Author(s)
- Mo, Ahra; Kim, Dong Seon; Yang, Eun Jin; Jung, Jinyoung; Ko, Young Ho; Kang, Sung-Ho; Cho, Kyoung-Ho; Park, Keyhong; Kim, Tae-Wook
- KIOST Author(s)
- Kim, Dong Seon(김동선)
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Alternative Author(s)
- 김동선
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Publication Year
- 2022-10
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Abstract
- This study evaluated interannual variation in the subsurface aragonite undersaturation zone (ΩAr<1 layer) in the Pacific Arctic Ocean, using data from the 2016–2019 period. The upper boundary (DEPΩ<1UB) of the ΩAr<1 layer generally formed at a depth where the contribution of corrosive Pacific water was approximately 98 %. The intensity of the Beaufort Gyre associated with freshwater accumulation mainly determined interannual variation in DEPΩ<1UB, but the direction of its effect was opposite west and east of ~166°W. The lower boundary (DEPΩ<1LB) of the ΩAr<1 layer was generally found at a depth range where equal contributions of Pacific and Atlantic water were expected. An Atlantic-origin cold saline water intrusion event in 2017 caused by an anomalous atmospheric circulation pattern significantly lifted the DEPΩ<1LB, thus the thickness of the ΩAr<1 layer decreased.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/43159
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DOI
- 10.1016/j.marpolbul.2022.114060
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Bibliographic Citation
- Marine Pollution Bulletin, v.183, 2022
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Publisher
- Pergamon Press Ltd.
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Keywords
- Arctic Ocean; Atmospheric circulation; Pacific-Arctic regions; Aragonite saturation; Beaufort gyre; Ocean acidification
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Type
- Article
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Language
- English
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Document Type
- Article
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