Impact of stratospheric dynamics on climate -Deepening understandings of dynamical coupling processes between statosphere and troposphere-

• Project/Area Number: 18K03743
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 17020:Atmospheric and hydrospheric sciences-related
• Research Institution: Kyushu University
• Principal Investigator: Eguchi Nawo 九州大学, 応用力学研究所, 助教 (50378907)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 成層圏対流圏間相互作用 / 熱帯対流圏界面遷移 / 成層圏対流圏間力学的相互作用 / 熱帯対流圏界面遷移層 / 熱帯気象 / 長期変動 / 数値実験 / 成層圏対流圏間力学結合 / 成層圏寒冷化 / 成層圏-対流圏間相互作用 / 気候変動

Outline of Final Research Achievements

The purpose of this study is to clarify the influence of the stratospheric dynamic process on tropical convection from a long-term perspective. 1) Using a global non-hydrostatic numerical model, it was clarified that the response of the stratospheric dynamics differs from region to region of tropical convection activity when the sudden stratospheric warming (SSW) event occurs. In addition, comparison between experiments on the presence or absence of SSW, and tropical convection becomes active when the SSW occurs.　2) From long-term satellite observations and reanalysis data, it was suggested that long-term variation in convection on the African continent can be explained by the stratospheric cooling effect.　3) It was clarified that there is a difference in the developmental difference of the cloud convection activity in the ocean continental region in the northern hemisphere winter due to the east-west wind phase change of quasi-biannual oscillation.

Academic Significance and Societal Importance of the Research Achievements

現在の気候の再現および将来気候の予報をより正確に実施するには、現在ほとんどの気候モデルで陽に解かれていない成層圏の循環場がどのように対流圏に影響を与えるのかを理解し、それを数値モデルに組み込むかが重要な課題である。特に積雲対流活動が活発な熱帯域は成層圏循環場の上流と深く結合しているため、ここでの成層圏と対流圏間の力学的相互作用過程を理解することが求められている。本研究の成果によって、これまでの見方とは異なる、成層圏の循環場による熱帯域の長期的な積雲活動への影響の新たな知見が得られただけでなく、今後の発展研究において、数値モデルの改善に繋がる成果が得られたと考えられる。

Research Products

• [Int'l Joint Research] NASA AMES(米国)
• [Int'l Joint Research] CNRS, Universite de Nantes(フランス)
• [Int'l Joint Research] Universitaria Superiore IUSS(イタリア)
• [Int'l Joint Research] UK Centre for Ecology and Hydrology/National Centre for Earth Observation(英国)
• [Int'l Joint Research] Seoul National University(韓国)
• [Int'l Joint Research] NASA Ames Research Center(米国)
• [Int'l Joint Research] NASA Ames Research Center(米国)
• [Int'l Joint Research] NASA/ARC(米国)
• [Int'l Joint Research] CNRS/Universite de Nantes/LMD/Ecole Polytechnique(フランス)
• [Journal Article] Dynamical evolution of a minor sudden stratospheric warming in the Southern Hemisphere in 2019 (2022)
  • Author(s): Liu Guangyu、Hirooka Toshihiko、Eguchi Nawo、Krueger Kirstin
  • Journal Title: Atmospheric Chemistry and Physics Volume: 22 Issue: 5 Pages: 3493-3505
  • DOI: 10.5194/acp-22-3493-2022
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Impact of Tropical Tropopause Cooling on Sahelian Extreme Deep Convection (2021)
  • Author(s): KODERA Kunihiko、EGUCHI Nawo、UEYAMA Rei、FUNATSU Beatriz M.、GAETANI Marco、TAYLOR Christopher M.
  • Journal Title: Journal of the Meteorological Society of Japan. Ser. II Volume: 99 Issue: 4 Pages: 1127-1139
  • DOI: 10.2151/jmsj.2021-055
  • NAID: 130008076270
  • ISSN: 0026-1165, 2186-9057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Robust Enhancement of Tropical Convective Activity by the 2019 Antarctic Sudden Stratospheric Warming (2020)
  • Author(s): Noguchi S.、Kuroda Y.、Kodera K.、Watanabe S.
  • Journal Title: Geophysical Research Letters Volume: 47 Issue: 15
  • DOI: 10.1029/2020gl088743
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Prediction of the quasi‐biennial oscillation with a multi‐model ensemble of QBO ‐resolving models (2020)
  • Author(s): Stockdale, T.N., Kim, Y.‐H., Anstey, J.A., Palmeiro, F.M., Butchart, N., Scaife, A.A., Andrews, M., Bushell, A.C., Dobrynin, M., Garcia‐Serrano, J., Hamilton, K., Kawatani, Y., Lott, F., McLandress, C., Naoe, H., Osprey, S., Pohlmann, H., Scinocca, J., Watanabe, S., Yoshida, K. and Yukimoto, S.
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: 146 Issue: 744 Pages: 1-22
  • DOI: 10.1002/qj.3919
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An evaluation of tropical waves and wave forcing of the QBO in the QBOi models (2020)
  • Author(s): Holt, L.A., Lott, F., Garcia, R.R., Kiladis, G.N., et al. (13th Kawatani, Y., 25th Yoshida, K.)
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: 146 Issue: 744 Pages: 1-27
  • DOI: 10.1002/qj.3827
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A high-level cloud detection method utilizing the GOSAT TANSO-FTS water vapor saturated band (2019)
  • Author(s): Eguchi, N., and Y. Yoshida
  • Journal Title: Atmospheric Measurement Techniques Volume: 12 Issue: 1 Pages: 389-403
  • DOI: 10.5194/amt-12-389-2019
  • Peer Reviewed / Open Access
• [Journal Article] Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity (2019)
  • Author(s): Kodera, K., N. Eguchi, R. Ueyama, Y. Kukoda, C. Kobayashi, Beatriz M. Funatsu, and Chantal Claud
  • Journal Title: Atmospheric Chemistry and Physics Volume: 19 Issue: 1 Pages: 2655-2669
  • DOI: 10.5194/acp-19-1-2019
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 成層圏赤道QBOの 海洋大陸対流活動の季節進行に及ぼす影響 (2022)
  • Author(s): 小寺邦彦、那須野智江、江口菜穂、原田やよい
  • Organizer: 第13回熱帯気象研究会
• [Presentation] The impact of upper tropospheric temperature change on tropical cyclone (2021)
  • Author(s): Nawo Eguchi, Kenta Kobayashi, Kosuke Ito and Tomoe Nasuno
  • Organizer: EGU General Assembly 2021
  • Int'l Joint Research
• [Presentation] Impact of tropical tropopause layer cooling trend on extreme deep convection in Asian-African sector (2021)
  • Author(s): Kunihiko Kodera, N. Eguchi, R. Ueyama, B. Funatu, GM. Gaetani and C. Taylor
  • Organizer: EGU General Assembly 2021
  • Int'l Joint Research
• [Presentation] Relationships between Unusual Antarctic Ozone Hole in 2019 and Dynamical Fields (2021)
  • Author(s): Guangyu Liu, Toshihiko Hirooka1, Nawo Eguchi, Krueger Kirstin
  • Organizer: QOS (Quadrennial Ozone Symposium) 2021
  • Int'l Joint Research
• [Presentation] FTS satellite observation mission for understanding chemical and dynamical processes in the upper atmosphere (2021)
  • Author(s): Nawo Eguchi, Kaley A. Walker, Masatomo Fujiwara, Dylan Jones, Yoshio Kawatani, Ray Nassar, David Plummer, Naoko Saitoh, Kimberly Strong, Kinya Toride,Yousuke Yamashita, Yukio Yoshida and Kei Yoshimura
  • Organizer: JpGU2021
• [Presentation] Study for influence of temperature at TTL on evolution of deep convection and tropical cyclones (2021)
  • Author(s): 小林健太、江口菜穂、那須野智江、山田洋平、小寺邦彦
  • Organizer: JpGU2021
• [Presentation] Dynamical Features of Antarctic Sudden Stratospheric Warming in 2019 (2021)
  • Author(s): 劉光宇、廣岡俊彦、江口菜穂、Krueger Kirstin
  • Organizer: JpGU2021
• [Presentation] Relationships between Unusual Antarctic Ozone Hole in 2019 and Dynamical Fields (2021)
  • Author(s): 劉光宇、廣岡俊彦、江口菜穂
  • Organizer: JpGU2021
• [Presentation] Influence of a SH SSW in September 2019 on tropical tropospheric circulation and deep convective activity (2021)
  • Author(s): 小寺邦彦、野口峻佑、江口菜穂、那須野智江
  • Organizer: JpGU2021
• [Presentation] 2019年夏季の熱帯低気圧の発生・発達への成層圏力学場の影響 (2021)
  • Author(s): 江口菜穂、山田洋平、那須野智江、小寺邦彦
  • Organizer: JpGU2021
• [Presentation] 海洋大陸域の対流活動の季節進行に及ぼす成層圏赤道QBOの影響 (2021)
  • Author(s): 小寺邦彦、那須野智江、江口菜穂、原田やよい
  • Organizer: 日本気象学会秋季大会
• [Presentation] Convective impact on the stratospheric-entry water vapor through the tropical UTLS in boreal winter and summer (2021)
  • Author(s): Rei Ueyama
  • Organizer: America Meteorological Society 2021 Annual Meeting
  • Int'l Joint Research
• [Presentation] 2次元軸対称大気海洋結合モデルを用いた熱帯対流圏界面気温が熱帯低気圧に与える影響評価 (2021)
  • Author(s): 小林健太、江口菜穂、伊藤耕介、那須野智江
  • Organizer: 第12回熱帯気象研究会
• [Presentation] アフリカ-アジア夏季モンスーンに及ぼす近年の熱帯対流圏界層低温化の影響 (2021)
  • Author(s): 小寺邦彦、江口菜穂、Rei Ueyama
  • Organizer: 第12回熱帯気象研究会
• [Presentation] Influence of stratospheric dynamics on tropical convection and equatorial wave (2020)
  • Author(s): Nawo Eguchi, Tomoe Nasuno and Kunihiko Kodera
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] The impact of lower stratospheric temperature change on Typhoon (2020)
  • Author(s): Kenta Kobayashi, Nawo Eguchi and Kosuke Ito
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Do sudden stratospheric warmings boost convective activity in the tropics? (2020)
  • Author(s): Kohei Yoshida
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] 熱帯低気圧多重発生・発達に対する成層圏循環の効果 (2020)
  • Author(s): 小寺邦彦、江口菜穂、野口峻佑、吉田康平、那須野智江
  • Organizer: 台風研究会
• [Presentation] 対流圏界面付近の気温場が台風に与える影響について (2020)
  • Author(s): 小林健太、江口菜穂、伊藤耕介
  • Organizer: 台風研究会
• [Presentation] 対流圏界面付近の気温場が台風に与える影響について (2020)
  • Author(s): 小林健太、江口菜穂、伊藤耕介
  • Organizer: 日本気象学会秋季大会
• [Presentation] 2019年9月南半球成層圏突然昇温の台風、ハリケーンの発達に及ぼす影響 (2020)
  • Author(s): 小寺邦彦、江口菜穂、那須野智江、野口峻佑、吉田康平
  • Organizer: 日本気象学会秋季大会
• [Presentation] 対流圏界面付近の力学場が熱帯低気圧に与える影響について (2020)
  • Author(s): 小林健太、江口菜穂、伊藤耕介
  • Organizer: 異常気象研究集会「災害をもたらす極端気象の発現にかかわる総観場・循環場の特徴と大気海洋過程」
• [Presentation] 成層圏力学場による熱帯低気圧の発生・発達過程への影響 (2020)
  • Author(s): 江口菜穂、小寺邦彦、山田洋平、那須野智江、小林健太
  • Organizer: 異常気象研究集会「災害をもたらす極端気象の発現にかかわる総観場・循環場の特徴と大気海洋過程」
• [Presentation] 2020年７月西日本豪雨に関連する大循環場 (2020)
  • Author(s): 小寺邦彦
  • Organizer: 異常気象研究集会「災害をもたらす極端気象の発現にかかわる総観場・循環場の特徴と大気海洋過程」
• [Presentation] Convective impact on the stratospheric-entry water vapor through the tropical UTLS in boreal winter and summer (2020)
  • Author(s): Rei Ueyama
  • Organizer: America Geophysical Union Fall Meeting 2020
  • Int'l Joint Research
• [Presentation] Solar influence on climate with MRI-ESM2.0 and its behavior in CMIP6 simulations (2020)
  • Author(s): Yoshida, K.
  • Organizer: PSTEP-4 & ISEE-2 International Symposium
  • Int'l Joint Research
• [Presentation] Do sudden stratospheric warmings boost convective activity in the tropics? (2020)
  • Author(s): Yoshida, K.
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research
• [Presentation] Consideration on impacts of SSW on the tropical troposphere through modulation of stratospheric mean meridional circulation (2020)
  • Author(s): Kunihiko Kodera
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research / Invited
• [Presentation] Stratospheric dynamical influence on tropical cyclone and equatorial waves (2020)
  • Author(s): Nawo Eguchi, Tomoe Nasuno and Kunihiko Kodera
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research
• [Presentation] Representation of the Semiannual Oscillation in Global Atmospheric Reanalyses (2020)
  • Author(s): Yoshio Kawatani, Toshihiko Hirooka, Kevin Hamilton, Anne Smith, Masatomo Fujiwara
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research
• [Presentation] ENSO modulation of the QBO: Results from MIROC models with and without non-orographic gravity wave parameterization (2020)
  • Author(s): Yoshio Kawatani, Kevin Hamilton, Kaoru Sato, Timothy J. Dunkerton, Shingo Watanabe and Kazuyoshi Kikuchi
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research
• [Presentation] Influence of Tropical Lower Stratospheric Cooling on Extreme Deep Convective Activity and Tropical Cyclones (2019)
  • Author(s): Kunihiko Kodera, Nawo Eguchi, Rei Ueyama, Beatriz M Funatsu, and Claud Chantal
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] Influence of Sudden Stratospheric Warmings on the Tropical Troposphere with High Resolution Large Ensemble Simulations (2019)
  • Author(s): Yoshida, K. and R. Mizuta
  • Organizer: 27th General Assembly of the International Union of Geodesy and Geophysics
  • Int'l Joint Research
• [Presentation] Influence of tropical lower stratospheric cooling on extreme deep convective activity and tropical cyclones (2019)
  • Author(s): Kunihiko Kodera, Nawo Eguchi, Beatriz M. Funatsu, Rei Ueyama, Chantal Claud
  • Organizer: Asia Oceania Geosciences Society (AOGS)16th Annual Meeting
  • Int'l Joint Research
• [Presentation] Sudden Stratospheric Warming Influence on the Tropical Troposphere with High Resolution Large Ensemble Simulations (2019)
  • Author(s): Yoshida, K. and R. Mizuta
  • Organizer: Asia Oceania Geosciences Society (AOGS)16th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] 赤道台風Vameiに対する対流圏界面気温の役割 (2019)
  • Author(s): 小寺邦彦、江口菜穂
  • Organizer: 日本気象学会秋季大会
• [Presentation] 成層圏突然昇温は熱帯の対流を促進するか？ (2019)
  • Author(s): 吉田康平
  • Organizer: 異常気象研究会2019「異常気象の発現メカニズムと大規模大気海洋変動の複合過程」
• [Presentation] 台風の発達過程への成層圏力学場の影響 (2019)
  • Author(s): 江口菜穂、那須野智江、小寺邦彦
  • Organizer: 異常気象研究会2019「異常気象の発現メカニズムと大規模大気海洋変動の複合過程」
• [Presentation] 2019年南半球成層圏突然昇温の熱帯対流圏への影響 (2019)
  • Author(s): 小寺邦彦
  • Organizer: 異常気象研究会2019「異常気象の発現メカニズムと大規模大気海洋変動の複合過程」
• [Presentation] 熱帯低気圧発達に対する成層圏循環の影響 (2019)
  • Author(s): 小寺邦彦, 江口菜穂
  • Organizer: 台風研究会
• [Presentation] Do sudden stratospheric warmings boost convective activity in the tropics? (2019)
  • Author(s): Yoshida, K.
  • Organizer: Workshop: Stratospheric predictability and impact on the troposphere
  • Int'l Joint Research
• [Presentation] Role of extreme deep convection on recent decadal tropical change (2019)
  • Author(s): Kunihiko Kodera, Nawo Eguchi, Rei Ueyama, Beatraiz M. Funatsu, and Chantal Claud
  • Organizer: American Geophysical Union (AGU) fall Meeting 2019
  • Int'l Joint Research / Invited
• [Presentation] Influence of stratospheric dynamics on deep convection and equatorial waves (2019)
  • Author(s): Nawo Eguchi, Tomoe Nasuno, Kunihiko Kodera
  • Organizer: American Geophysical Union (AGU) fall Meeting 2019
  • Int'l Joint Research
• [Presentation] Role of tropical lower stratospheric cooling on recent tropical tropospheric change (2019)
  • Author(s): Kodera, K., N. Eguchi, R. Ueyama, Y. Kuroda, B. Funatsu, C. Kobayashi, and C. Claud
  • Organizer: 99th American Meteorological Society Annual Meeting
  • Int'l Joint Research
• [Presentation] 上部対流圏・下部成層圏における二酸化炭素変動について (2019)
  • Author(s): 本田 照祐, 江口 菜穂, 齋藤 尚子, 丹羽 洋介
  • Organizer: 第21回CEReS環境リモートセンシングシンポジウム
• [Presentation] 2016年のQBO 異常に伴う力学場と大気微量成分の変動Ⅲ (2018)
  • Author(s): 劉 光宇, 廣岡 俊彦, 江口 菜穂
  • Organizer: 日本気象学会2018年春季大会
• [Presentation] 南極域におけるオゾン変動と力学場の関係II (2018)
  • Author(s): 劉 光宇, 廣岡 俊彦, 江口 菜穂
  • Organizer: 日本気象学会2018年春季大会
• [Presentation] 2016年のQBO 異常に伴う力学場と大気微量成分の変動(Ⅱ) (2018)
  • Author(s): 加藤 諒一, 廣岡 俊彦, 江口 菜穂
  • Organizer: 日本気象学会2018年春季大会
• [Presentation] Relationships ｂetween Antarctic ozone hole and dynamical fields (2018)
  • Author(s): Liu, G., T. Hirooka, and N. Eguchi
  • Organizer: AOGS 15th Annual Meeting
  • Int'l Joint Research
• [Presentation] Impact of Tropical Lower Stratospheric Cooling on Recent Trends in Tropical Circulation Through Modulation of Deep Convective Activity (2018)
  • Author(s): Kodera, K., N. Eguchi, R. Ueyama, Y. Kuroda, and C. Kobayashi
  • Organizer: AOGS 15th Annual Meeting
  • Int'l Joint Research
• [Presentation] A study on aerosol transport into upper troposphere and lower stratosphere and their impact on radiative and chemical processes with a global climate model (2018)
  • Author(s): Hokazono, K., T. Takemura, and N. Eguchi
  • Organizer: iCACGP-IGAC2018
  • Int'l Joint Research
• [Presentation] Analysis of the carbon dioxide in the upper troposphere and lower stratosphere by the data from GOSAT TANSO-FTS TIR (2018)
  • Author(s): Honda, A., N. Eguchi, and N. Saitoh
  • Organizer: iCACGP-IGAC2018
  • Int'l Joint Research
• [Presentation] Seasonal and inter-annual variations of methane at the upper troposphere (2018)
  • Author(s): Eguchi, N., N. Saitoh, and Y. Niwa
  • Organizer: iCACGP-IGAC2018
  • Int'l Joint Research
• [Presentation] Stratospheric dynamical impact on the development of tropical cyclone (2018)
  • Author(s): Eguchi, N., T. Nasuno, and K. Kodera
  • Organizer: SPARC General Assembly 2018
  • Int'l Joint Research
• [Presentation] Impact of the tropical lower stratospheric cooling on deep convective activity during a Boreal summer monsoon (2018)
  • Author(s): Kodera, K., R. Ueyama, B.M. Funatsu, N. Eguchi, L. Phister, C. Claud, and T. Nasuno
  • Organizer: SPARC General Assembly 2018
  • Int'l Joint Research / Invited
• [Presentation] Relationships between Antarctic ozone hole and dynamical fields, (2018)
  • Author(s): Liu, G., T. Hirooka, and N. Eguchi
  • Organizer: SPARC General Assembly 2018
  • Int'l Joint Research
• [Presentation] 気候モデルを用いたエアロゾルの上部対流圏・下部成層圏への輸送および大気放射・化学過程への影響 (2018)
  • Author(s): 外薗 健正, 竹村 俊彦, 江口 菜穂
  • Organizer: 日本気象学会2018年秋季大会
• [Presentation] GOSAT TANSO-FTS TIRより導出された二酸化炭素濃度の上部対流圏および下部成層圏の変動解析 (2018)
  • Author(s): 本田 照裕, 江口 菜穂, 齋藤 尚子, 丹羽 洋介
  • Organizer: 日本気象学会2018年秋季大会
• [Presentation] Small Antarctic ozone hall in 2012 and 2017 and the relationship to dynamical fields (2018)
  • Author(s): Hirooka, T., G. Liu, and N. Eguchi
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research
• [Presentation] Impact of stratosphere on the development of tropical cyclone (2018)
  • Author(s): Eguchi,N. T. Nasuno and K. Kodera
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research