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Clarifying the mechanism of tropical climate variability based on the life-cycle analysis of wave energy in the atmosphere and ocean

Research Project

Project/Area Number 18H03738
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionNagoya University

Principal Investigator

Aiki Hidenori  名古屋大学, 宇宙地球環境研究所, 准教授 (60358752)

Co-Investigator(Kenkyū-buntansha) 菅野 湧貴  一般財団法人電力中央研究所, 環境科学研究所, 主任研究員 (10826978)
尾形 友道  国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(アプリケーションラボ), 研究員 (60716679)
豊田 隆寛  気象庁気象研究所, 全球大気海洋研究部, 主任研究官 (90450775)
福富 慶樹  名古屋大学, 宇宙地球環境研究所, 研究員 (30392963)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥44,200,000 (Direct Cost: ¥34,000,000、Indirect Cost: ¥10,200,000)
Fiscal Year 2021: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2020: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2019: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2018: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Keywordsエネルギー循環 / 赤道波 / ロスビー波 / 赤道波・ロスビー波 / 熱帯中緯度相互作用 / MJO/ENSO/IOD / 地図上トレース解析 / 季節内から季節間スケール
Outline of Final Research Achievements

A variety of tropical atmosphere-ocean coupled systems in the Indo-Pacific regions affect tropical as well as global climate and weather extremes. Firstly, this study has constructed a set of diagnosis procedures to track the onset, spreading, and termination of events using Hofmerer diagrams, that is beyond the expectation of previous theoretical studies that assumed the use of time averaging. Next, seasonal and interannual variations in the tropical Indian Ocean and the tropical Atlantic Ocean are investigated from a new standpoint of providing the picture of wave energy circulation. Finally, the diagnosis procedures in this study can be applied to all the Indian, Pacific, and Atlantic Oceans as well as the global atmosphere to improve our understanding of synoptic-scale wave dynamics.

Academic Significance and Societal Importance of the Research Achievements

長期間のデータ解析からテレコネクションのような物理的連鎖のメカニズムを明らかにしたり、世界各地の気 候変動イベントの正確な動向を予測したりすることがかつて難しかった。従来の大気海洋研究においては、赤道域の力学と中緯度の力学が別々の体系で定式化されてきたため、大規模な波動の役割を解析する際に、熱帯-亜熱帯相互作用を統一した尺度で評価できないという問題があった。これを解決するための一策として、波動エネルギーの新しい診断表式が近年提案されたが、理論的な枠組みに留まり、その実証研究が無い状況であった。この背景において、世界初となる実証研究を積み重ねたことが本研究の意義である。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (45 results)

All 2022 2021 2020 2019 2018 Other

All Journal Article (14 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (29 results) (of which Int'l Joint Research: 14 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] The 1994 positive Indian Ocean Dipole event as investigated by the transfer routes of oceanic wave energy2022

    • Author(s)
      Li Zimeng、Aiki Hidenori
    • Journal Title

      Journal of Physical Oceanography

      Volume: 52 Issue: 3 Pages: 459-473

    • DOI

      10.1175/jpo-d-21-0189.1

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Resolution dependence of tropical cyclones simulated by a spectral cumulus parameterization2022

    • Author(s)
      Baba Yuya、Ogata Tomomichi
    • Journal Title

      Dynamics of Atmospheres and Oceans

      Volume: 97 Pages: 101283-101283

    • DOI

      10.1016/j.dynatmoce.2022.101283

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Extremely Weak Cold-Air Mass Flux and Extratropical Direct Meridional Circulation Linked to the Record-Warm Winter 2019/2020 over East Asia2022

    • Author(s)
      Kobayashi Chiaki、Maeda Shuhei、Kanno Yuki、Iwasaki Toshiki
    • Journal Title

      SOLA

      Volume: 18 Issue: 0 Pages: 1-7

    • DOI

      10.2151/sola.2022-001

    • NAID

      130008145822

    • ISSN
      1349-6476
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The energy flux of three-dimensional waves in the atmosphere: Exact expression for a basic model diagnosis with no equatorial gap2021

    • Author(s)
      Aiki Hidenori、Fukutomi Yoshiki、Kanno Yuki、Ogata Tomomichi、Toyoda Takahiro、Nakano Hideyuki
    • Journal Title

      Journal of the Atmospheric Sciences

      Volume: 78 Pages: 1745-1758

    • DOI

      10.1175/jas-d-20-0177.1

    • Related Report
      2021 Annual Research Report
  • [Journal Article] The vertical structure of annual wave energy flux in the tropical Indian Ocean2021

    • Author(s)
      Zimeng Li, Hidenori Aiki, Motoki Nagura and Tomomichi Ogata
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 8 Issue: 1 Pages: 43-43

    • DOI

      10.1186/s40645-021-00432-9

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Energy Flow Diagnosis of ENSO from an Ocean Reanalysis2021

    • Author(s)
      Toyoda Takahiro、Nakano Hideyuki、Aiki Hidenori、Ogata Tomomichi、Fukutomi Yoshiki、Kanno Yuki、Urakawa L. Shogo、Sakamoto Kei、Yamanaka Goro、Nagura Motoki
    • Journal Title

      Journal of Climate

      Volume: 34 Issue: 10 Pages: 4023-4042

    • DOI

      10.1175/jcli-d-20-0704.1

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Climate precursors of satellite water marker index for spring cholera outbreak in Northern Bay of Bengal Coastal Regions2021

    • Author(s)
      Ogata Tomomichi、Racault Marie-Fanny、Nonaka Masami、Behera Swadhin
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 18 Issue: 19 Pages: 10201-10201

    • DOI

      10.3390/ijerph181910201

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Variability of tropical cyclone frequency over the western North Pacific in 2018-20202021

    • Author(s)
      Ogata Tomomichi、Baba Yuya
    • Journal Title

      Frontiers in Climate

      Volume: 3 Pages: 770785-770785

    • DOI

      10.3389/fclim.2021.770785

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] 海洋再解析を用いたENSO のエネルギーフロー診断2021

    • Author(s)
      豊田隆寛、中野英之、相木秀則、尾形友道、菅野湧貴、福富慶樹、浦川昇吾、坂本圭、山中吾郎、名倉元樹
    • Journal Title

      月刊海洋

      Volume: 53 Pages: 535-540

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Decadal-scale variability of the North Pacific subtropical mode water and its influence on the pycnocline observed along 137°E2020

    • Author(s)
      Kobashi Fumiaki、Nakano Toshiya、Iwasaka Naoto、Ogata Tomomichi
    • Journal Title

      Journal of Oceanography

      Volume: 77 Issue: 3 Pages: 487-503

    • DOI

      10.1007/s10872-020-00579-x

    • NAID

      40022579309

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Life Cycle of Annual Waves in the Indian Ocean as Identified by Seamless Diagnosis of the Energy Flux2020

    • Author(s)
      Li Zimeng、Aiki Hidenori
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Issue: 2

    • DOI

      10.1029/2019gl085670

    • NAID

      120006845838

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Climatological Horizontal Pattern of Energy Flux in the Tropical Atlantic as Identified by a Unified Diagnosis for Rossby and Kelvin Waves2020

    • Author(s)
      Song Qingyang、Aiki Hidenori
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 125 Issue: 2

    • DOI

      10.1029/2019jc015407

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Future Reductions in Polar Cold Air Mass and Cold Air Outbreaks Revealed From Isentropic Analysis2020

    • Author(s)
      Kanno Yuki、Iwasaki Toshiki
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Issue: 3

    • DOI

      10.1029/2019gl086076

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Pathway of Intraseasonal Wave Energy in the Tropical Indian Ocean as Identified by a Seamless Diagnostic Scheme2019

    • Author(s)
      Ogata Tomomichi、Aiki Hidenori
    • Journal Title

      SOLA

      Volume: 15 Issue: 0 Pages: 262-267

    • DOI

      10.2151/sola.2019-047

    • NAID

      130007777320

    • ISSN
      1349-6476
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] MIMに基づく大気エネルギーサイクルの将来変化2021

    • Author(s)
      菅野湧貴、岩崎俊樹
    • Organizer
      異常気象研究会2021・第9回観測システム・予測可能性研究連絡会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 50km-AGCMで再現された北西太平洋域の台風活動度変動2021

    • Author(s)
      尾形友道、山本絢子、田口文明、野中正見
    • Organizer
      日本海洋学会2021年度秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Statistical prediction of satellite water marker index for spring cholera outbreak in northern Bay of Bengal coastal regions2021

    • Author(s)
      Ogata Tomomichi、Racault Marie-Fanny、Nonaka Masami、Behera Swadhin K
    • Organizer
      AGU fall meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Climate precursors of cholera outbreak2021

    • Author(s)
      Tomomichi Ogata
    • Organizer
      Approaches for Hydrospheric-Atmospheric Environmental Studies in Asia-Oceania
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Height-dependent expression for the energy flux of equatorial waves: exact and approximate versions for unified model diagnosis Height-dependent expression for the energy flux of equatorial waves: exact and approximate versions for unified model diagnosis2020

    • Author(s)
      H. Aiki
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 年周期表層波動によるインド洋と太平洋間の相互作用2020

    • Author(s)
      相木秀則
    • Organizer
      日本海洋学会2020年度秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The horizontal circulation of annual wave energy in the tropical Atlantic Ocean as identified by a seamless analysis scheme2020

    • Author(s)
      Song, Q and Aiki, H.
    • Organizer
      Ocean Sciences Meeting 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Seasonal energy analysis for baroclinic waves in equatorial Atlantic through a diagnostic scheme for energy flux2019

    • Author(s)
      Song, Q and Aiki, H.
    • Organizer
      JpGU 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The life cycle of annual waves in the Indian Ocean as identified by a seamless diagnosis for the energy flux (インド洋海洋表層季節波動のライフサイクルの解析:熱帯中緯度連続解析によるエネルギー循環)2019

    • Author(s)
      Li, Z. and AIki, H.
    • Organizer
      JpGU 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The life cycle of annual waves in the Indian Ocean as identified by a seamless diagnosis for the energy flux2019

    • Author(s)
      Li, Z. and AIki, H.
    • Organizer
      The 11th International Workshop on Modeling the Ocean
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 強いエルニーニョ現象に伴う海洋表層波動の役割の解析2019

    • Author(s)
      志村貴寛, 相木秀則
    • Organizer
      日本海洋学会2019年度秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 熱帯太平洋の表層波動のライフサイクル解析:Level-0表式の実装2019

    • Author(s)
      相木秀則
    • Organizer
      日本気象学会秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 熱帯太平洋の表層季節波動のライフサイクル解析2019

    • Author(s)
      相木秀則
    • Organizer
      日本気象学会2019年春季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Extratropical Forcing of Tropical Synoptic-Scale Waves over the Indian Ocean during Austral Summer2019

    • Author(s)
      Fukutomi, Y. and Aiki, H.
    • Organizer
      AGU2019 Fall Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インド洋上の総観規模波動の力学と中緯度-熱帯相互作用2019

    • Author(s)
      福富慶樹
    • Organizer
      日本気象学会秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 新しい波動エネルギーフラックス式の熱帯波動伝播力学の解析への適用:海洋大陸-北オーストラリア域における熱帯総観規模波動擾乱の診断解析2019

    • Author(s)
      福富慶樹
    • Organizer
      JpGU 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] The life-cycle of annual waves in the Pacific Ocean as identified by a seamless diagnosis for the energy flux2019

    • Author(s)
      Aiki, H. and Shimura, T.
    • Organizer
      JpGU 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 季節風から年周期表層波動へのエネルギー入力の見積もり2019

    • Author(s)
      相木秀則
    • Organizer
      日本海洋学会2019年度秋季大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] The life-cycle of annual waves in the Pacific Ocean as identified by a seamless diagnosis for the energy flux2019

    • Author(s)
      H. Aiki and T. Shimura
    • Organizer
      4th International Joint Workshop on Computationally-Intensive Modelling of the Climate System and 9th OFES International Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 風から海洋表層流へのエネルギー入力について解釈のしやすい計算法2019

    • Author(s)
      相木秀則
    • Organizer
      海洋波および大気海洋相互作用に関するワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] The life-cycle of annual waves in the Inidan Ocean as identified by a seamless diagnosis for the energy flux2019

    • Author(s)
      Q. Song and H. Aiki
    • Organizer
      4th International Joint Workshop on Computationally-Intensive Modelling of the Climate System and 9th OFES International Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The life-cycle of annual waves in the Inidan Ocean as identified by a seamless diagnosis for the energy flux2019

    • Author(s)
      Z. Li and H. Aiki
    • Organizer
      4th International Joint Workshop on Computationally-Intensive Modelling of the Climate System and 9th OFES International Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Towards a seamlessly diagnosable expression for the energy flux associated with both equatorial and mid-latitude waves」2018

    • Author(s)
      H. Aiki
    • Organizer
      2nd Asia-Pacific Conference on Plasma Physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 大気と海洋の波動エネルギーのライフサイクル解析による熱帯気候変動メカニズムの解明2018

    • Author(s)
      相木秀則
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 熱帯インド洋の表層季節波動のライフサイクル解析2018

    • Author(s)
      相木秀則
    • Organizer
      2018年度日本海洋学会秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 風応力の季節変動成分によって駆動される中緯度と赤道域の波動相互作用2018

    • Author(s)
      志村貴寛、相木秀則
    • Organizer
      2018年度日本海洋学会秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 風応力の季節変動成分によって駆動される中緯度と赤道域の波動相互作用2018

    • Author(s)
      志村貴寛、相木秀則
    • Organizer
      2018年度大気海洋相互作用に関する研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Synoptic-Scale Waves propagating across the Maritime Continent and Northern Australia and Extratropical-Tropical Interactions2018

    • Author(s)
      Y. Fukutomi
    • Organizer
      インド洋/太平洋域における海洋循環/環境応用に関する研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Tropical Synoptic-Scale Wave Disturbances Propagating across the Maritime Continent-Australian Monsoon Region2018

    • Author(s)
      Y. Fukutomi
    • Organizer
      AGU 2018 Fall meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 海洋表層のエネルギーフラックス解析結果

    • URL

      http://co2.hyarc.nagoya-u.ac.jp/labhp/member/aiki/invepv.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 大気と海洋の波動エネルギーのライフサイクル解析による熱帯気候変動メカニズムの解明

    • URL

      http://co2.hyarc.nagoya-u.ac.jp/labhp/member/aiki/invepv.html

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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