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 fishabl...

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Main Authors: Shigeto Nishino, Jinyoung Jung, Kyoung-Ho Cho, William J. Williams, Amane Fujiwara, Akihiko Murata, Motoyo Itoh, Eiji Watanabe, Michio Aoyama, Michiyo Yamamoto-Kawai, Takashi Kikuchi, Eun Jin Yang, Sung-Ho Kang
Format: Article
Language:English
Published: Nature Portfolio 2023-11-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-023-41960-w
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author Shigeto Nishino
Jinyoung Jung
Kyoung-Ho Cho
William J. Williams
Amane Fujiwara
Akihiko Murata
Motoyo Itoh
Eiji Watanabe
Michio Aoyama
Michiyo Yamamoto-Kawai
Takashi Kikuchi
Eun Jin Yang
Sung-Ho Kang
author_facet Shigeto Nishino
Jinyoung Jung
Kyoung-Ho Cho
William J. Williams
Amane Fujiwara
Akihiko Murata
Motoyo Itoh
Eiji Watanabe
Michio Aoyama
Michiyo Yamamoto-Kawai
Takashi Kikuchi
Eun Jin Yang
Sung-Ho Kang
author_sort Shigeto Nishino
collection DOAJ
description 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.
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spelling doaj.art-e695d2c8145e447ea4a85df7e6f10a7c2023-11-20T10:13:53ZengNature PortfolioNature Communications2041-17232023-11-0114111210.1038/s41467-023-41960-wAtlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical eventShigeto Nishino0Jinyoung Jung1Kyoung-Ho Cho2William J. Williams3Amane Fujiwara4Akihiko Murata5Motoyo Itoh6Eiji Watanabe7Michio Aoyama8Michiyo Yamamoto-Kawai9Takashi Kikuchi10Eun Jin Yang11Sung-Ho Kang12Institute of Arctic Climate and Environment Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Division of Ocean Sciences, Korea Polar Research InstituteDivision of Ocean Sciences, Korea Polar Research InstituteInstitute of Ocean Sciences, Fisheries and Oceans CanadaInstitute of Arctic Climate and Environment Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Global Ocean Observation Research Center, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Institute of Arctic Climate and Environment Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Institute of Arctic Climate and Environment Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Global Ocean Observation Research Center, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Department of Ocean Sciences, Tokyo University of Marine Science and TechnologyInstitute of Arctic Climate and Environment Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)Division of Ocean Sciences, Korea Polar Research InstituteKorea Polar Research InstituteAbstract 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.https://doi.org/10.1038/s41467-023-41960-w
spellingShingle Shigeto Nishino
Jinyoung Jung
Kyoung-Ho Cho
William J. Williams
Amane Fujiwara
Akihiko Murata
Motoyo Itoh
Eiji Watanabe
Michio Aoyama
Michiyo Yamamoto-Kawai
Takashi Kikuchi
Eun Jin Yang
Sung-Ho Kang
Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
Nature Communications
title Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
title_full Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
title_fullStr Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
title_full_unstemmed Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
title_short Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
title_sort atlantic origin water extension into the pacific arctic induced an anomalous biogeochemical event
url https://doi.org/10.1038/s41467-023-41960-w
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