Tropical stratosphere-troposphere coupling through cirrus and its role in climate change

• Project/Area Number: 19K03977
• 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: Japan, Meteorological Research Institute
• Principal Investigator: Yoshida Kohei 気象庁気象研究所, 全球大気海洋研究部, 主任研究官 (10636038)
• Co-Investigator(Kenkyū-buntansha): 川合 秀明 気象庁気象研究所, 気象予報研究部, 主任研究官 (40601688)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 熱帯成層圏対流圏結合 / 巻雲 / 雲放射効果 / 気候モデリング / 気候変動

Outline of Research at the Start

巻雲は大気上層にできる薄い氷雲であり、熱帯の成層圏と対流圏の相互作用を通して、1週間～数年程度先の気象・気候予測に影響する可能性がある。本研究は世界最新鋭の気象・気候予測に用いられる気象研究所地球システムモデルを改良し、巻雲の再現性を高めた上で数値実験を行い、巻雲が熱帯の成層圏と対流圏の相互作用に及ぼす影響とその仕組みを解明する。またそれが地球温暖化に伴いどう変化するかも明らかにする。

Outline of Final Research Achievements

The cloud radiation effects associated with the cirrus clouds in the tropical tropopause layer warm this region and also have thermal effects on the troposphere, and these effects are intensified during global warming. They modulate the amplitude of the lower stratospheric quasi-biennial oscillation (QBO). Experiments with higher vertical resolution and modified physical processes show significant differences in the QBO easterly and westerly wind phase differences, especially in convective and related circulation indices near the equator in the Northern Hemisphere winter, from the maritime continents to the Indian Ocean. In the experiment with the same settings but excluding cloud radiation in the upper troposphere, the lower QBO amplitudes were larger, but no significant differences appeared in convective and other indices. This difference was not detected by the higher vertical resolution alone, indicating that the cloud radiation process of the cirrus clouds may be influential.

Academic Significance and Societal Importance of the Research Achievements

巻雲の重要性が示されたことで、気候モデルについて巻雲とその雲放射効果の再現性という観点で再考されるべき、というパラダイムシフトが期待される。さらに光学的な薄さから観測が難しい巻雲や氷晶核となるエアロゾルの詳細な分布と構造を調べる必要性が再認識され、観測のさらなる充実と数値モデル研究の進展との好循環が期待される。また気候モデルにおける物理過程の扱いの難しさや、成層圏対流圏結合の解析におけるサンプル数確保の重要性を示せたことも研究領域におけるパラダイムシフトの一助になったと考えられる。

Research Products

• [Journal Article] Importance of minor-looking treatments in global climate models (2022)
  • Author(s): Kawai, H., Yoshida, K., Koshiro, T., & Yukimoto, S.
  • Journal Title: Journal of Advances in Modeling Earth Systems Volume: 14 Issue: 10
  • DOI: 10.1029/2022ms003128
  • Peer Reviewed / Open Access
• [Journal Article] Comparison of Arctic and Antarctic stratospheric climates in chemistry versus no-chemistry climate models (2022)
  • Author(s): Morgenstern, O., Kinnison, D., Mills, M., Michou, M., Horowitz, L., Lin, P., Deushi, M., Yoshida, K., O’Connor, F., Tang, Y., Abraham, L., Keeble, J., Dennison, F., Rozanov, E., Egorova, T., Sukhodolov, T., & Zeng, G.
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 127 Issue: 20
  • DOI: 10.1029/2022jd037123
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Estimated cloud-top entrainment index explains positive low-cloud-cover feedback (2022)
  • Author(s): Koshiro, T., H. Kawai, and A. T. Noda
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 119 Issue: 29
  • DOI: 10.1073/pnas.2200635119
  • Peer Reviewed / Open Access
• [Journal Article] Influence of the solar cycle on the North Atlantic Oscillation (2022)
  • Author(s): Kuroda, Y., Kodera, K., Yoshida, K., Yukimoto, S., and Gray, L.
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 127 Issue: 1
  • DOI: 10.1029/2021jd035519
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Relationship between shortwave radiation bias over the Southern Ocean and the double-intertropical convergence zone problem in MRI-ESM2 (2021)
  • Author(s): Kawai, H., Koshiro, T., and Yukimoto, S.
  • Journal Title: Atmospheric Science Letters Volume: 22(12) Issue: 12
  • DOI: 10.1002/asl.1064
  • Peer Reviewed / Open Access
• [Journal Article] The Brewer?Dobson circulation in CMIP6 (2021)
  • Author(s): Abalos, M., Calvo, N., Benito-Barca, S., Garny, H., Hardiman, S. C., Lin, P., Andrews, M. B., Butchart, N., Garcia, R., Orbe, C., Saint-Martin, D., Watanabe, S., and Yoshida, K.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Issue: 17 Pages: 13571-13591
  • DOI: 10.5194/acp-21-13571-2021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Do sudden stratospheric warmings boost convective activity in the tropics? (2021)
  • Author(s): Yoshida, K., and Mizuta, R.
  • Journal Title: Geophysical Research Letters Volume: 48 Issue: 16
  • DOI: 10.1029/2021gl093688
  • Peer Reviewed / Open Access
• [Journal Article] Teleconnections of the quasi‐biennial oscillation in a multi‐model ensemble of <scp>QBO</scp> ‐resolving models (2021)
  • Author(s): J.A. Anstey, I. R. Simpson, J. H. Richter, H. Naoe, M. Taguchi, F. Serva, L. J. Gray, N. Butchart, K. Hamilton, S. Osprey, O. Bellprat, P. Braesicke, A. C. Bushell, C. Cagnazzo, C-C. Chen, H-Y .Chun, R. R. Garcia, L. Holt, Y. Kawatani, T. Kerzenmacher, Y-H. Kim, et al.
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: - Issue: 744 Pages: 1-25
  • DOI: 10.1002/qj.4048
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Influence of the El Ni?o?Southern Oscillation on entry stratospheric water vapor in coupled chemistry?ocean CCMI and CMIP6 models (2021)
  • Author(s): Garfinkel, C. I., Harari, O., Ziskin Ziv, S., Rao, J., Morgenstern, O., Zeng, G., Tilmes, S., Kinnison, D., O'Connor, F. M., Butchart, N., Deushi, M., J?ckel, P., Pozzer, A., and Davis, S.
  • Journal Title: Atmos. Chem. Phys. Volume: 21 Issue: 5 Pages: 3725-3740
  • DOI: 10.5194/acp-21-3725-2021
  • 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] Global and Arctic effective radiative forcing of anthropogenic gases and aerosols in MRI-ESM2.0 (2020)
  • Author(s): Oshima, N., Yukimoto, S., Deushi, M., Koshiro, T., Kawai, H., Tanaka, T. Y., and Yoshida, K.
  • Journal Title: Prog. Earth. Planet. Sci. Volume: 7 Issue: 1 Pages: 38-38
  • DOI: 10.1186/s40645-020-00348-w
  • Peer Reviewed / Open Access
• [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] Future Changes in Western North Pacific Tropical Cyclone Genesis Environment in High-Resolution Large-Ensemble Simulations (2020)
  • Author(s): Fudeyasu, H., Yoshida, K., and Yoshida, R.
  • Journal Title: Oceans Volume: 1 Issue: 4 Pages: 355-365
  • DOI: 10.3390/oceans1040024
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Future Changes in the Global Frequency of Tropical Cyclone Seeds (2020)
  • Author(s): Sugi, M., Yamada, Y., Yoshida, K., Mizuta, R., Nakano, M., Kodama, C., and Satoh, M.
  • Journal Title: SOLA Volume: 16 Issue: 0 Pages: 70-74
  • DOI: 10.2151/sola.2020-012
  • NAID: 130007839920
  • ISSN: 1349-6476
  • Peer Reviewed / Open Access
• [Journal Article] Projected future changes in tropical cyclones using the CMIP6 HighResMIP multimodel ensemble (2020)
  • Author(s): Roberts, M.J., Camp, J., Seddon, J., Vidale, P.L., Hodges, K., Vanni?re, B., Mecking, J., Haarsma, R., Bellucci, A., Scoccimarro, E., Caron, L.‐P., Chauvin, F., Terray, L., Valcke, S., Moine, M.‐P., Putrasahan, D., Roberts, C.D., Senan, R., Zarzycki, C., Ullrich, P., Yamada, Y., Mizuta, R., et al.
  • Journal Title: Geophysical Research Letters Volume: 47 Issue: 14
  • DOI: 10.1029/2020gl088662
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Relationship between shortwave radiation bias over the Southern Ocean and the ITCZ in MRI-ESM2 (2020)
  • Author(s): Kawai, H., T. Koshiro, and S. Yukimoto
  • Journal Title: CAS/JSC WGNE Research Activities in Earth System Modelling/WMO Volume: 50 Pages: 709-710
  • Open Access
• [Journal Article] Impact of cloud microphysics parameter on 20th century warming simulated in MRI-CGCM3 (2020)
  • Author(s): Koshiro, T., H. Kawai, and S. Yukimoto
  • Journal Title: CAS/JSC WGNE Research Activities in Earth System Modelling Volume: 50
  • Open Access
• [Journal Article] Enhanced new particle formation above the marine boundary layer over the Yellow Sea: Potential impacts on cloud condensation nuclei (2020)
  • Author(s): Takegawa, N., T. Seto, N. Moteki, M. Koike, N. Oshima, K. Adachi, K. Kita, A. Takami, and Y. Kondo
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Issue: 9 Pages: 1-17
  • DOI: 10.1029/2019jd031448
  • Peer Reviewed / Open Access
• [Journal Article] The equatorial stratospheric semiannual oscillation and time‐mean winds in QBOi models (2020)
  • Author(s): Smith, A. K, L. A. Holt, R. R. Garcia, J. A. Anstey, F. Serva, N. Butchart, S. Osprey, A. C. Bushell, Y. Kawatani, Y.‐H. Kim, F. Lott, P. Braesicke, C. Cagnazzo, C.‐C. Chen, H.‐Y. Chun, L. Gray, T. Kerzenmacher, H. Naoe, J. Richter, S. Versick, V. Schenzinger, S. Watanabe, and K. Yoshida
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: - Issue: 744 Pages: 1-17
  • DOI: 10.1002/qj.3690
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Response of the Quasi‐Biennial Oscillation to a warming climate in global climate models (2020)
  • Author(s): Richter, J.H., K. Yoshida et al.
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: - Issue: 744 Pages: 1-29
  • DOI: 10.1002/qj.3749
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evaluation of the Quasi‐Biennial Oscillation in global climate models for the SPARC QBO‐initiative (2020)
  • Author(s): Bushell, A.C., K. Yoshida et al.
  • Journal Title: Quarterly Journal of the Royal Meteorological Society Volume: - Issue: 744 Pages: 1-31
  • DOI: 10.1002/qj.3765
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Uncertainty in the response of sudden stratospheric warmings and stratosphere-troposphere coupling to quadrupled CO2 concentrations in CMIP6 models (2020)
  • Author(s): Ayarzaguena, B., A. J. Charlton-Perez, A. H. Butler, P. Hitchcock, I. R. Simpson, L. M. Polvani6, N. Butchart, E. P. Gerber, L. Gray, B. Hassler, P. Lin, F. Lott, E. Manzini, R. Mizuta, C. Orbe, S. Osprey, D. Saint-Martin, M. Sigmond, M. Taguchi, E. M. Volodin, and S. Watanabe
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Issue: 6
  • DOI: 10.1029/2019jd032345
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Impact of satellite observations on forecasting sudden stratospheric warmings (2020)
  • Author(s): Noguchi, S., Y. Kuroda, H. Mukougawa, R. Mizuta, and C. Kobayashi
  • Journal Title: Geophysical Research Letters Volume: 47 Issue: 5
  • DOI: 10.1029/2019gl086233
  • Peer Reviewed / Open Access
• [Journal Article] Significant improvement of cloud representation in the global climate model MRI-ESM2 (2019)
  • Author(s): Kawai, H., S. Yukimoto, T. Koshiro, N. Oshima, T. Tanaka, H. Yoshimura, and R. Nagasawa
  • Journal Title: Geosci. Model Dev. Volume: 12 Issue: 7 Pages: 2875-2897
  • DOI: 10.5194/gmd-12-2875-2019
  • Peer Reviewed / Open Access
• [Journal Article] The Meteorological Research Institute Earth System Model Version 2.0, MRI-ESM2.0: Description and Basic Evaluation of the Physical Component (2019)
  • Author(s): Yukimoto, S., H. Kawai, T. Koshiro, N. Oshima, K. Yoshida, S. Urakawa, H. Tsujino, M. Deushi, T. Tanaka, M. Hosaka, S. Yabu, H. Yoshimura, E. Shindo, R. Mizuta, A. Obata, Y. Adachi, and M. Ishii
  • Journal Title: Journal of the Meteorological Society of Japan. Ser. II Volume: 97 Issue: 5 Pages: 931-965
  • DOI: 10.2151/jmsj.2019-051
  • NAID: 130007709131
  • ISSN: 0026-1165, 2186-9057
  • Peer Reviewed / Open Access
• [Journal Article] Clear-sky ultraviolet radiation modelling using output from the Chemistry Climate Model Initiative (2019)
  • Author(s): Lamy, K., M. Deushi, K. Yoshida et al.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 19 Issue: 15 Pages: 10087-10110
  • DOI: 10.5194/acp-19-10087-2019
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Influence of quasi‐biennial oscillation on the boreal winter extratropical stratosphere in QBOi experiments (2019)
  • Author(s): Naoe, H. and K. Yoshida
  • Journal Title: Q. J. R. Meteorol. Soc. Volume: 145 Issue: 723 Pages: 2755-2771
  • DOI: 10.1002/qj.3591
  • Peer Reviewed
• [Presentation] Large ensembles unveil quantitative impact of El Ni?o-Southern Oscillation and Quasi-Biennial Oscillation on Northern Hemisphere stratosphere-troposphere coupling (2023)
  • Author(s): Yoshida, K., Y. Imada, R. Mizuta, and Y. Ushijima
  • Organizer: The Role of Atmospheric Dynamics for Climate and Extremes A Joint SPARC DynVar ? SNAP Meeting
  • Int'l Joint Research
• [Presentation] 大規模気候シミュレーションによる成層圏対流圏結合過程のENSOとQBOとの関係 (2023)
  • Author(s): 吉田康平, 今田由紀子, 水田亮, 牛島悠介
  • Organizer: 異常気象研究集会「異常気象と長期変動」
• [Presentation] 大規模アンサンブルデータによる北半球冬季成層圏対流圏結合 (2023)
  • Author(s): 吉田康平
  • Organizer: JpGU meeting 2023
• [Presentation] 大規模アンサンブル実験から見える北半球冬季成層圏対流圏結合 (2023)
  • Author(s): 吉田康平
  • Organizer: 日本気象学会2023年度春季大会
• [Presentation] 全球気候モデルにおけるマイナーに見える取り扱いの重要性 ―Part 2 雲関係― (2023)
  • Author(s): 川合秀明, 吉田康平, 神代剛, 行本誠史
  • Organizer: 日本気象学会2023年度春季大会
• [Presentation] 全球気候モデルにおけるマイナーに見える取り扱いの重要性 (2023)
  • Author(s): 川合秀明, 吉田康平, 神代剛, 行本誠史
  • Organizer: JpGU meeting 2023
• [Presentation] Importance of Minor-Looking Treatments for Clouds in GCMs (2023)
  • Author(s): Kawai, H., K. Yoshida, T. Koshiro, and S. Yukimoto
  • Organizer: CFMIP Meeting on Clouds, Precipitation, Circulation, and Climate Sensitivity
  • Int'l Joint Research
• [Presentation] What determines earth system model performance? Physics or …? (2023)
  • Author(s): Kawai, H., K. Yoshida, T. Koshiro, and S. Yukimoto
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Importance of Minor-Looking Treatments in GCMs --- Can satellite observation reduce uncertainty in such treatments? (2023)
  • Author(s): Kawai, H., K. Yoshida, T. Koshiro, and S. Yukimoto
  • Organizer: 2nd EarthCARE Modeling Workshop
  • Int'l Joint Research
• [Presentation] Estimated cloud-top entrainment index explains positive low-cloud-cover feedback (2023)
  • Author(s): Tsuyoshi Koshiro, Hideaki Kawai, Akira T. Noda
  • Organizer: 2nd EarthCARE Modeling Workshop
  • Int'l Joint Research
• [Presentation] The polar stratosphere-troposphere coupling variation with El Ni?o Southern Oscillation and Quasi-Biennial Oscillation in large-ensemble simulations (2022)
  • Author(s): Yoshida, K.
  • Organizer: 7th SPARC General Assembly
  • Int'l Joint Research
• [Presentation] Importance of Minor-Looking Treatments in Global Climate Models (2022)
  • Author(s): Kawai, H., K. Yoshida, T. Koshiro, and S. Yukimoto
  • Organizer: 6th WGNE workshop on systematic errors in weather and climate models
  • Int'l Joint Research
• [Presentation] Importance of “Minor Treatments” in Global Climate Models (2022)
  • Author(s): Kawai, H., K. Yoshida, T. Koshiro, and S. Yukimoto
  • Organizer: The 3rd Pan-GASS meeting
  • Int'l Joint Research
• [Presentation] モデルのマイナーに見える取り扱いは雲表現にとってどんなに重要か？ (2022)
  • Author(s): 川合秀明, 吉田康平, 神代剛, 行本誠史
  • Organizer: エアロゾル・雲・降水に関する研究集会
• [Presentation] 全球気候モデルにおけるマイナーに見える取り扱いの重要性 (2022)
  • Author(s): 川合秀明, 吉田康平, 神代剛, 行本誠史
  • Organizer: 日本気象学会2022年度秋季大会
• [Presentation] Estimated cloud-top entrainment index explains positive low-cloud-cover feedback (2022)
  • Author(s): Tsuyoshi Koshiro, Hideaki Kawai, Akira T. Noda
  • Organizer: 2022 CFMIP Meeting on Clouds
  • Int'l Joint Research
• [Presentation] Estimated cloud-top entrainment index explains positive low-cloud-cover feedback (2022)
  • Author(s): Tsuyoshi Koshiro, Hideaki Kawai, Akira T. Noda
  • Organizer: 16th Conference on Cloud Physics
  • Int'l Joint Research
• [Presentation] Estimated cloud-top entrainment index explains positive low-cloud-cover feedback (2022)
  • Author(s): Tsuyoshi Koshiro, Hideaki Kawai, Akira T. Noda
  • Organizer: 6th WGNE workshop on systematic errors in weather and climate models
  • Int'l Joint Research
• [Presentation] Do sudden stratospheric warmings boost convective activity in the tropics? (2022)
  • Author(s): Yoshida, K., and Mizuta, R.
  • Organizer: AMS 102nd Annual Meeting
  • Int'l Joint Research
• [Presentation] 気候モデルにおけるダブルITCZ問題はどうしたら緩和できるか？ (2022)
  • Author(s): 川合秀明, 神代剛, 行本誠史
  • Organizer: 第13回熱帯気象研究会
• [Presentation] 南大洋の雲は熱帯降水に影響するか？ (2022)
  • Author(s): 川合秀明, 神代剛, 行本誠史
  • Organizer: 2021年度エアロゾル・雲・降水の相互作用に関する研究集会
• [Presentation] 成層圏オゾンが季節内から季節スケールで対流圏循環に及ぼす影響について (2022)
  • Author(s): 出牛真
  • Organizer: 令和3年度日本気象学会長期予報研究連絡会
• [Presentation] Does the reduction in the Southern Ocean radiation bias alleviate the double-ITCZ problem? (2021)
  • Author(s): Kawai, H., Koshiro, T. and Yukimoto, S.
  • Organizer: AGU Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] Does the reduction in the Southern Ocean radiation bias alleviate the double-ITCZ problem? (2021)
  • Author(s): Kawai, H., Koshiro, T. and Yukimoto, S.
  • Organizer: CFMIP Meeting on Clouds
  • Int'l Joint Research
• [Presentation] 成層圏突然昇温は熱帯対流活動を励起するか？～大規模アンサンブルシミュレーションからの視座～ (2021)
  • Author(s): 吉田康平, 水田亮
  • Organizer: JpGU Meeting 2021
  • Invited
• [Presentation] MRI-ESM2における南大洋の短波放射バイアスとダブルITCZ問題の関係 (2021)
  • Author(s): 川合秀明, 神代剛, 行本誠史
  • Organizer: 日本気象学会2021年度春季大会
• [Presentation] Do sudden stratospheric warmings boost convective activity in the tropics? (2020)
  • Author(s): Yoshida, K.
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Significant Improvement of Cloud Representation in MRI-ESM2 (2020)
  • Author(s): Kawai, H., Yukimoto, S., Koshiro, T., Oshima, N., Tanaka, T., Yoshimura, H., and Nagasawa, R.
  • Organizer: AGU Fall Meeting 2020
  • 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): Kodera, K.
  • 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 wave (2020)
  • Author(s): Eguchi, N., T. Nasuno, and K. Kodera
  • Organizer: WCRP/SPARC SATIO-TCS joint workshop on Stratosphere-Troposphere Dynamical Coupling in the Tropics
  • Int'l Joint Research
• [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] Sudden Stratospheric Warming Influence on the Tropical Troposphere with High Resolution Large Ensemble Simulations (2019)
  • Author(s): Yoshida, K. and R. Mizuta
  • Organizer: AOGS 16th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] Influence of Sudden Stratospheric Warmings on the Tropical Troposphere with High Resolution Large Ensemble Simulations (2019)
  • Author(s): Yoshida, K. and R. Mizuta, 2019
  • Organizer: 27th IUGG General Assembly
  • Int'l Joint Research
• [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・第7回観測システム・予測可能性研究連絡会「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] Mechanisms of Changes in Marine Fog in CMIP5 Multi-Model Simulations (2019)
  • Author(s): Kawai, H., T. Koshiro, H. Endo, and O. Arakawa
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research
• [Presentation] Convective and large-scale precipitation in models (2019)
  • Author(s): Kawai, H., T. Koshiro, H. Yoshimura, R. Oyama, H. Endo, and M. Nakagawa
  • Organizer: CFMIP Meeting on Clouds
  • Int'l Joint Research
• [Presentation] MRI-ESM2の雲表現の改良における様々な苦労 (2019)
  • Author(s): 川合秀明, 行本誠史, 神代剛, 大島長, 田中泰宙, 吉村裕正, 長澤亮二
  • Organizer: 日本気象学会2019年度秋季大会
• [Presentation] Evaluation of radiative forcing using MRI earth system model (2019)
  • Author(s): Oshima, N.
  • Organizer: AMAP short-lived climate forcers (SLCF) expert group meeting
  • Int'l Joint Research
• [Presentation] Development of the MRI Earth System Model (MRI-ESM2) and evaluations of radiative effects of black carbon (2019)
  • Author(s): Oshima, N.
  • Organizer: The Workshop on Air Quality and Climate Research Across Scales
  • Int'l Joint Research / Invited
• [Presentation] Subseasonal Hindcast Experiments with Different Treatment on Ozone Chemistry and Radiation Processes after Major Sudden Stratospheric Warming Events (2019)
  • Author(s): Deushi, M.
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research
• [Presentation] Possible impacts of stratospheric ozone on circulation changes in the tropical troposphere following a stratospheric sudden warming event (2019)
  • Author(s): Deushi, M.
  • Organizer: JpGU meeting 2019
  • Int'l Joint Research
• [Presentation] 北半球冬季における成層圏オゾン変動が季節内スケールの対流圏循環に及ぼす影響 (2019)
  • Author(s): 出牛真
  • Organizer: 異常気象研究会2019・第7回観測システム・予測可能性研究連絡会「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] Can low cloud feedback be explained based on low cloud indices? (2019)
  • Author(s): Koshiro, T., H. Kawai, and S. Yukimoto
  • Organizer: CFMIP 2019 Meeting on Clouds, Precipitation, Circulation, and Climate Sensitivity
  • Int'l Joint Research
• [Presentation] Influence of Tropical Lower Stratospheric Cooling on Extreme Deep Convective Activity and Tropical Cyclones (2019)
  • Author(s): Kodera, K., N. Eguchi, R. Ueyama, B. Funatsu, and C. Chantal
  • Organizer: JpGU meeting 2019
  • Int'l Joint Research
• [Presentation] Influence of tropical lower stratospheric cooling on extreme deep convective activity and tropical cyclones (2019)
  • Author(s): Kodera, K., N. Eguchi, B. Funatsu, R. Ueyama, and C. Claud
  • Organizer: 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2019年度秋季大会
• [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・第7回観測システム・予測可能性研究連絡会「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・第7回観測システム・予測可能性研究連絡会「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] Role of extreme deep convection on recent decadal tropical change (2019)
  • Author(s): Kodera, K., N. Eguchi, R. Ueyama, B. Funatsu, and C. Claud
  • Organizer: AGU fall Meeting 2019
  • Int'l Joint Research
• [Presentation] Influence of stratospheric dynamics on deep convection and equatorial waves (2019)
  • Author(s): Eguchi, N., T. Nasuno, K. Kodera
  • Organizer: AGU fall Meeting 2019
  • Int'l Joint Research
• [Book] Impacts of Solar Activity Variations on Climate. In: Kusano, K. (eds) Solar-Terrestrial Environmental Prediction (2023)
  • Author(s): Yoden Shigeo, Yoshida Kohei
  • Total Pages: 15
  • Publisher: Springer
  • ISBN: 9789811977657