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Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event.

ABSTRACT: The Arctic Ocean is facing dramatic environmental and ecosystem changes. In this context, an international multiship survey project was undertaken in 2020 to obtain current baseline data. During the survey, unusually low dissolved oxygen and acidified water were found in a high-seas fishable area of the western (Pacific-side) Arctic Ocean. Herein, we show that the Beaufort Gyre shrinks to the east of an ocean ridge and forms a front between the water within the gyre and the water from the eastern (Atlantic-side) Arctic. That phenomenon triggers a frontal northward flow along the ocean ridge. This flow likely transports the low oxygen and acidified water toward the high-seas fishable area; similar biogeochemical properties had previously been observed only on the shelf-slope north of the East Siberian Sea.

SUBMITTER: Nishino S

PROVIDER: S-EPMC10622542 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event.

Nishino Shigeto S Jung Jinyoung J Cho Kyoung-Ho KH Williams William J WJ Fujiwara Amane A Murata Akihiko A Itoh Motoyo M Watanabe Eiji E Aoyama Michio M Yamamoto-Kawai Michiyo M Kikuchi Takashi T Yang Eun Jin EJ Kang Sung-Ho SH

Nature communications 20231102 1

The Arctic Ocean is facing dramatic environmental and ecosystem changes. In this context, an international multiship survey project was undertaken in 2020 to obtain current baseline data. During the survey, unusually low dissolved oxygen and acidified water were found in a high-seas fishable area of the western (Pacific-side) Arctic Ocean. Herein, we show that the Beaufort Gyre shrinks to the east of an ocean ridge and forms a front between the water within the gyre and the water from the easter ...[more]

PMID: 37919271

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Dataset Information

Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event.

Publications

Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event.

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