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北太平洋栄養物質循環の数値モデリング

Publicly Offered Research

Project AreaOcean Mixing Processes: Impact on Biogeochemistry, Climate and Ecosystem
Project/Area Number 16H01585
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Complex systems
Research InstitutionHokkaido University

Principal Investigator

三寺 史夫  北海道大学, 低温科学研究所, 教授 (20360943)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2017: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywords物質循環シミュレーション / 高解像度モデル / 北太平洋 / オホーツク海 / ベーリング海 / 鉄 / 海洋科学 / 海洋物質循環 / 海洋数値シミュレーション / 鉄循環 / 潮汐混合 / 高解像度海洋モデル
Outline of Annual Research Achievements

本研究では、オホーツク海をはじめとする北太平洋西部亜寒帯海域の「豊かな海の恵み」を生み出す仕組みの解明を目的として、栄養物質循環の数値モデリングを実施した。具体的には、(1)強い混合域で大きな鉛直拡散係数を与えるという従来型パラメタリゼーションを用いたモデルによる数値実験(以下、西部亜寒帯物質循環モデル)、(2)潮汐モデルを海洋海氷結合モデルに直接結合し、鉛直混合を起潮力から計算して物質循環を駆動するという、これまでにない北高解像度太平洋物質循環シミュレーションの開発を進めた。
西部亜寒帯物質循環モデルでは、経年変動実験を行った。風応力、熱、淡水フラックスとしてERA-interimを用いモデルを駆動した。また、千島列島における潮汐混合は、18.6年の周期で20%強度を変動させた。期間は1979年‐2011年である。モデルは、道東沖・冬季のリン濃度の年年変動(周期が7年以下)を良好に再現した。千島列島から親潮域にかけて、潮汐混合に伴ってリン濃度の南北勾配が大きい。このため、地衡流(親潮の強さ)の変動がリン酸塩移流の変動となり、最終的に親潮域のリン濃度変動を引き起こしていることがわかった。この地衡流変動の要因は、風の年々変動により励起される北部北太平洋沿岸の沿岸捕捉波であることが判明した。
また、高解像度北太平洋物質循環シミュレーションの開発を進め、亜寒帯循環の大部分はHigh Nutrient Low Chlorophyll(HNLC;高栄養塩にも関わらず生物生産が比較的低い)海域であることを再現した。一方で、親潮から北太平洋中央部にかけて帯状に高生産海域が現れることも再現した。このモデルを用いて潮汐の有り無し実験を行ったところ、潮汐が無い場合、オホーツク海の生物生産が大きく減少することがわかった。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (49 results)

All 2018 2017 2016 Other

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (39 results) (of which Int'l Joint Research: 21 results,  Invited: 1 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Low ocean-floor rises regulate subpolar sea surface temperature by forming baroclinic jets2018

    • Author(s)
      Mitsudera H.、Miyama T.、Nishigaki H.、Nakanowatari T.、Nishikawa H.、Nakamura T.、Wagawa T.、Furue R.、Fujii Y.、Ito S.
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41467-018-03526-z

    • NAID

      120006470992

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamics of a Quasi-Stationary Jet along the Subarctic Front in the North Pacific Ocean (the Western Isoguchi Jet): An Ideal Two-layer Model2018

    • Author(s)
      Miyama, T., H. Mitsudera, H. Nishigaki, and R. Furue
    • Journal Title

      Journal of Physical Oceanography

      Volume: 48 Issue: 4 Pages: 807-830

    • DOI

      10.1175/jpo-d-17-0086.1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Buoyancy shutdown process for the development of the baroclinic jet structure of the Soya Warm Current during summer2018

    • Author(s)
      Karaki, T., H. Mitsudera, and H. Kuroda
    • Journal Title

      Journal of Oceanography

      Volume: - Issue: 4 Pages: 339-350

    • DOI

      10.1007/s10872-018-0465-1

    • NAID

      40021597649

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] オホーツク海・北極域における大気海洋相互作用2018

    • Author(s)
      三寺史夫・中村知裕・田口文明・浮田甚郎・星一平
    • Journal Title

      気象研究ノート

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrographic observations by instrumented marine mammals in the Sea of Okhotsk2017

    • Author(s)
      3.Nakanowatari, T., K. I. Ohshima, V. Mensah, Y. Mitani, K. Hattori, M. Kobayashi, F. Roquet, Y. Sakurai, H. Mitsudera, and M. Wakatsuchi
    • Journal Title

      Polar Science

      Volume: 13 Pages: 56-65

    • DOI

      10.1016/j.polar.2017.06.001

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Importance of Ekman transport and gyre circulation change on seasonal variation of surface dissolved iron in the western subarctic North Pacific2017

    • Author(s)
      Nakanowatari Takuya、Nakamura Tomohiro、Uchimoto Keisuke、Nishioka Jun、Mitsudera Humio、Wakatsuchi Masaaki
    • Journal Title

      Journal of Geophysical Research

      Volume: 122 Issue: 5 Pages: 4364-4391

    • DOI

      10.1002/2016jc012354

    • NAID

      120006559266

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Mechanism of Ice-Band Pattern Formation Caused by Resonant Interaction between Sea Ice and Internal Waves: A Theory2016

    • Author(s)
      Saiki, R., and H. Mitsudera
    • Journal Title

      Journal of Physical Oceanography

      Volume: 46 Issue: 2 Pages: 583-600

    • DOI

      10.1175/jpo-d-14-0162.1

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] 亜寒帯・ベーリング海に流入する黒潮系水の移動経路の解析2016

    • Author(s)
      藤井陽介, 三寺史夫, 中村知裕, 西垣肇, 美山透, 伊藤進一, 和川拓
    • Journal Title

      月刊海洋

      Volume: 48 Pages: 143-151

    • Related Report
      2016 Annual Research Report
  • [Presentation] On the seasonal variations of the Bering Slope Current2018

    • Author(s)
      Mitsudera, H., Y. Hirano, and H. Nishikawa
    • Organizer
      The 32nd International Symposium on Okhotsk Sea & Polar Oceans
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Seawater transport paths of the North Pacific transition domain observed with drifting buoys2018

    • Author(s)
      Nishikawa, H., H. Mitsudera,, T. Okunishi, S. Ito, T. Wagawa, D. Hasegawa, T. Miyama, and H. Kaneko
    • Organizer
      The 32nd International Symposium on Okhotsk Sea & Polar Oceans
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hypothesis of dynamics of water exchange between the Sea of Okhotsk and the Pacific from a point of view of tidal effects2018

    • Author(s)
      Chou, H.-W., H. Mitsudera, and H. Nishikawa
    • Organizer
      The 32nd International Symposium on Okhotsk Sea & Polar Oceans
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of sedimentary supply on iron distribution in the North Pacific: Sensitivity experiments with a high-resolution model2018

    • Author(s)
      Nakamura, T., H. Mitsudera, H. Yoshinari, T. Nakanowatari, H. Nishikawa, and K. Uchimoto
    • Organizer
      Ocean Sciences Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 漂流ブイで観測された北太平洋移行領域の流動構造2017

    • Author(s)
      西川はつみ、三寺史夫、奥西武、伊藤進一、和川拓、長谷川大介、美山透、金子仁
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Bering Slope Currentとそれに伴う高気圧性渦の季節変動について2017

    • Author(s)
      三寺 史夫、平野 洋一
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Numerical modeling on seasonal variations of the Bering Slope Current and associated eddies2017

    • Author(s)
      Mitsudera, H.
    • Organizer
      9th International Workshop on Modeling the Ocean (IWMO)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 傾圧ロスビー波の特性曲線‐再考‐2017

    • Author(s)
      三寺史夫、美山透、西垣肇、古恵亮
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] アイスバンドの融解について2017

    • Author(s)
      佐伯立、三寺史夫、馬目歩美、豊田威信、木村詞明
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Bering Slope Currentとその周辺で生成する渦の季節変動2017

    • Author(s)
      三寺史夫、平野洋一、西川はつみ
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 南大西洋西部における傾圧ロスビー波の合流がフロントを形成する過程について2017

    • Author(s)
      東弓弦、三寺史夫
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 北太平洋亜寒帯域における物質循環の高解像度シミュレーション2017

    • Author(s)
      西川はつみ、三寺史夫、吉成浩志、中野渡拓也、中村知裕
    • Organizer
      日本海洋学会2017年度秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Formidable effects of small-amplitude bottom topography on the formation of baroclinic stationary jet in subpolar oceans2017

    • Author(s)
      Mitsudera, H., H. Nishikawa, T. Miyama, H. Nishigaki, T. Nakanowatari, T. Nakamura, T. Wagawa, R. Furue, Y. Fujii, S. Ito
    • Organizer
      Meeting on Perspectives in Computational Atmosphere and Ocean Science and 8th OFES International Workshop
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Coupled experiment of an ice-ocean circulation model and a biogeochemical model2017

    • Author(s)
      Nishikawa, H., H. Mitsudera, H. Yoshinari, T. Nakanowatari, T. Nakamura, K. Uchimoto, and H. Hasumi
    • Organizer
      Meeting on Perspectives in Computational Atmosphere and Ocean Science and 8th OFES International Workshop
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Challenges for modeling migratory fish behavior and distribution: An example in the western North Pacific2017

    • Author(s)
      Ito, S., T. Okunishi, T. Wagawa, S. Kakehi, and H. Mitsudera
    • Organizer
      International Symposium “Drivers of dynamics of small pelagic fish resources”
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] North Pacific overturn that connects the surface circulation with the intermediate-layer circulation and the Isoguchi Jets2017

    • Author(s)
      Mitsudera, H., T. Miyama, H. Nishigaki, T. Nakanowatari, H. Nishikawa, T. Nakamura, T. Wagawa, R. Furue, Y. Fujii, and S. Ito
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Seasonal variability of the Bering Slope Current and the generated eddies in this vicinity2017

    • Author(s)
      Hirano, Y., and H. Mitsudera
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of the mean flow in the Oyashio region: Effects of bottom topography on a subpolar gyre2017

    • Author(s)
      Nishigaki, H., H. Mitsudera, T. Miyama, and Y. Miyazawa
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of a quasi-stationary jet along the subarctic front in the North Pacific Ocean (the Isoguchi Jet) - Ideal two-layer model -2017

    • Author(s)
      Miyama, T., H. Mitsudera, H. Nishigaki, and R. Furue
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of a Coupled Atmosphere-Ocean Data Assimilation System in JMA/MRI and a Reanalysis Experiment2017

    • Author(s)
      Fujii, Y., N. Usui, N. Hirose, H. Mitsudera, T. Nakamura, H. Nishigaki, T. Miyama, S. Ito, and T. Wagawa
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structure of the Transition Domain observed with drifting buoys2017

    • Author(s)
      Nishikawa, H., H. Mitsudera, T. Okunishi, S. Ito, T. Wagawa, D. Hasegawa, T. Miyama, and H. Kaneko
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of sedimentary supply on iron circulation in the North Pacific based on a high-resolution model2017

    • Author(s)
      Nakamura, T., H. Mitsudera, H. Yoshinari, T. Nakanowatari, H. Nishikawa, and K. Uchimoto
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北太平洋亜寒帯フロントに見られる準定常ジェットの10年規模変動2017

    • Author(s)
      中野渡拓也,三寺史夫,田口文明,見延庄士郎
    • Organizer
      The 32nd International Symposium on Okhotsk Sea and Polar Oceans, 2017
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics and its implication of a Quasi-stationary Jet along the Subarctic Front in the North Pacific Ocean (the Isoguchi jet)2017

    • Author(s)
      Miyama, T., H. Mitsudera, H. Nishigaki, and R. Furue
    • Organizer
      Workshop on "Application of Ocean and Climate Predictions"
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北太平洋SSTフロントの日本の気象への影響2016

    • Author(s)
      西川はつみ
    • Organizer
      大槌シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 漂流ブイで観測された北太平洋移行領域の流動構造2016

    • Author(s)
      西川はつみ,三寺史夫,奥西武,伊藤進一,和川拓,長谷川大介,美山透,金子仁
    • Organizer
      大槌シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 海洋循環の西岸強化とロスビー波2016

    • Author(s)
      三寺史夫
    • Organizer
      日本気象学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 大気循環に影響する北太平洋移行領域周辺の流動構造2016

    • Author(s)
      西川はつみ,三寺史夫,奥西武,伊藤進一,和川拓,長谷川大介,美山透,金子仁
    • Organizer
      日本気象学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Pathway of the Kuroshio water traveling to the Bering Sea in a western North Pacific eddy-resolving model analyzed with the tangent linear and adjoint models2016

    • Author(s)
      Fujii, Y., H. Mitsudera, T. Nakamura, H. Nishigaki, T. Miyama, T. Wagawa, S. Ito, N. Hirose, and N. Usui
    • Organizer
      CLIVAR Open Science Conference
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ロシア船を用いた親潮源流域の観測研究-航海の概要と親潮上流の栄養物質分布-2016

    • Author(s)
      西岡純, 安田一郎, 小野数也, 中村知裕, 鈴木光次, 渡邊豊, 山下洋平, 平譯亨, L. Hongbin, 藤尾伸三, 柳本大悟, 田中雄大, 原田尚美, 関宰, 岡崎裕典, 長尾誠也, 井上睦夫, 小畑元, 田副博文, 小川浩史, 宗林留美, 三寺史夫, 江淵直人,若土正暁, Y. N. Volkov
    • Organizer
      日本海洋学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 北太平洋亜寒帯フロントに見られる準定常ジェットの10年規模変動2016

    • Author(s)
      中野渡拓也, 三寺史夫, 田口文明, 見延庄士郎
    • Organizer
      日本海洋学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 北太平洋移行領域の力学的構造2016

    • Author(s)
      三寺史夫,美山透,西垣肇,中野渡拓也,西川はつみ,中村知裕,和川拓,古恵亮,藤井陽介,伊藤進一
    • Organizer
      日本海洋学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 漂流ブイ観測で可視化される北太平洋移行領域の流動構造2016

    • Author(s)
      西川はつみ,三寺史夫,奥西武,伊藤進一,和川拓,長谷川大介,美山透,金子仁
    • Organizer
      日本海洋学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 能登・佐渡沿岸域と沖合域の流れ場の変動とその成因2016

    • Author(s)
      和川拓,井桁庸介,池田怜,三寺史夫,阿部祥子,福留研一
    • Organizer
      日本海洋学会2016年度秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 環オホーツク圏の海洋・大気シミュレーション2016

    • Author(s)
      中村知裕, 大宮学, 三寺史夫, 中野渡拓也, 吉成浩志, 伊藤薫
    • Organizer
      学際大規模情報基盤共同利用・共同研究拠点 第8回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 能登・佐渡沿岸域と沖合域の流れ場の変動2016

    • Author(s)
      和川拓,井桁庸介,池田怜,三寺史夫,阿部祥子,福留研一
    • Organizer
      北海道大学低温科学研究所共同研究集会「宗谷暖流を始めとした対馬暖流系の変動メカニズム」
    • Related Report
      2016 Annual Research Report
  • [Presentation] A mechanism of Ice-Band Pattern Formation caused by resonant interaction between sea ice and internal waves2016

    • Author(s)
      Mitsudera, H
    • Organizer
      8th International Workshop on Modeling the Ocean (IWMO)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Eddy-Topography Interaction Produces Quasi-stationary Jet between the Subtropical and the Subarctic Gyres in the North Pacific Ocean (the Isoguchi Jet)2016

    • Author(s)
      Miyama, T., H. Mitsudera, H. Nishigaki, and R. Furue
    • Organizer
      8th International Workshop on Modeling the Ocean (IWMO)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] How does the Amur River discharge spread over the northwestern continental shelf in the Sea of Okhotsk?2016

    • Author(s)
      Mitsudera, H., and A. Fujisaki-Manome
    • Organizer
      Japan Geoscience Union Meeting 2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] 低温環境の科学事典2016

    • Author(s)
      三寺史夫
    • Total Pages
      432
    • Publisher
      朝倉書店
    • ISBN
      9784254161281
    • Related Report
      2016 Annual Research Report
  • [Remarks] 北海道大学低温科学研究所 環オホーツク観測研究センター

    • URL

      http://wwwoc.lowtem.hokudai.ac.jp/

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report

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Published: 2016-04-26   Modified: 2018-12-17  

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