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Enhanced role of eddies in the Arctic marine biological pump

Author

Listed:
  • Eiji Watanabe

    (Japan Agency for Marine-Earth Science and Technology)

  • Jonaotaro Onodera

    (Japan Agency for Marine-Earth Science and Technology)

  • Naomi Harada

    (Japan Agency for Marine-Earth Science and Technology)

  • Makio C. Honda

    (Japan Agency for Marine-Earth Science and Technology)

  • Katsunori Kimoto

    (Japan Agency for Marine-Earth Science and Technology)

  • Takashi Kikuchi

    (Japan Agency for Marine-Earth Science and Technology)

  • Shigeto Nishino

    (Japan Agency for Marine-Earth Science and Technology)

  • Kohei Matsuno

    (National Institute of Polar Research
    Hokkaido University)

  • Atsushi Yamaguchi

    (Hokkaido University)

  • Akio Ishida

    (Japan Agency for Marine-Earth Science and Technology
    Tokoha University)

  • Michio J. Kishi

    (Japan Agency for Marine-Earth Science and Technology
    Hokkaido University)

Abstract

The future conditions of Arctic sea ice and marine ecosystems are of interest not only to climate scientists, but also to economic and governmental bodies. However, the lack of widespread, year-long biogeochemical observations remains an obstacle to understanding the complicated variability of the Arctic marine biological pump. Here we show an early winter maximum of sinking biogenic flux in the western Arctic Ocean and illustrate the importance of shelf-break eddies to biological pumping from wide shelves to adjacent deep basins using a combination of year-long mooring observations and three-dimensional numerical modelling. The sinking flux trapped in the present study included considerable fresh organic material with soft tissues and was an order of magnitude larger than previous estimates. We predict that further reductions in sea ice will promote the entry of Pacific-origin biological species into the Arctic basin and accelerate biogeochemical cycles connecting the Arctic and subarctic oceans.

Suggested Citation

  • Eiji Watanabe & Jonaotaro Onodera & Naomi Harada & Makio C. Honda & Katsunori Kimoto & Takashi Kikuchi & Shigeto Nishino & Kohei Matsuno & Atsushi Yamaguchi & Akio Ishida & Michio J. Kishi, 2014. "Enhanced role of eddies in the Arctic marine biological pump," Nature Communications, Nature, vol. 5(1), pages 1-12, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4950
    DOI: 10.1038/ncomms4950
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    Cited by:

    1. 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 J, 2023. "Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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