ABOUT

Atsushi Okazaki is an Associate Professor at the Institute of Advanced Academic Research (IAAR) / Center for Environmental Remote Sensing (CEReS), Chiba University, Japan. His research interests are in stable water isotope modeling and data assimilation for hydrology, weather prediction, and paleoclimate.
The full CV is available HERE

NEWS / Upcoming Talks

• AMS
  • Kurosawa, K. and Okazaki, A., An Ensemble-Based Framework for Inverse Design of Precipitation Mitigation, 2027 AMS Annual Meeting, 10-14 Jan 2027, Denver, US.
• AGU26 Annual Meeting
  • Higuchi, Y., Bai, Y., Okazaki, A., Yasunaga, K., Ogura, M., Evaluating Sequential Weather Intervention via Black-Box Optimization under Atmospheric State Uncertainty, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Kino, K., Okazaki, A., Bong, H., Yoshimura, K., Southern Ocean Water Vapor Isotope Variability Associated with Synoptic-Scale Atmospheric Circulation: Challenges in Global Isotope-Enabled Climate Models, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Kurosawa, K. and Okazaki, A., Ensemble-Based Model Predictive Control Framework for Meteorological Applications, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Li, Y., Okazaki, A., Cauquoin, A., Nitta, T., Kino, K., Yoshimura, K., Improved Representation of Pacific δ18Osw Variability in the Isotope-Enabled Fully Coupled Model MIROC6-iso and toward the MIROC6-ILS-iso for the Enhanced Representation of Land–River Isotope Processes, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Li, Y., Okazaki, A., Cauquoin, A., Nitta, T., Spatially adaptive neighboring information improves constraints on local temperature projections, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Manabe, S., Suzumura, T., Okazaki, A., Historical weather reconstruction using subjective information from historical diaries and data assimilation, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Namegai, T., Yoshimura, K., Okazaki, A., Bong, H., Global reanalysis of monthly precipitation isotopes by integrating WisoMIP multi-model ensemble with GNIP observation, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Okazaki, A. and Sato, Y., Development of stable water isotope-enabled large eddy resolving model SCALE, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Okazaki, A., Data Assimilation as Emergent Constraints: A Nonlinear and Non-Gaussian Framework for Constraining Climate Projections, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
  • Tripathee, S., Sarkar, M., Agosta, C., Bailey, A., Bong, H., Cauquoin, A., Ding, Q., Fiorella, R., LeGrande, A. N., Okazaki, A., Werner, M., Yoshimura, K., Zhu, J., and Dee, S., Right Correlation, Wrong Physics: Isotopes Reveal Why GCMs Misrepresent Stratocumulus Cloud-Mixing Feedbacks, AGU26 Annual Meeting, 7-11 Dec 2026, SF, US.
• 日本気象学会2026年度秋季大会
  • 岡崎淳史, 佐藤陽祐, 領域気象モデルSCALE-RMへの水同位体導入, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 黒澤賢太, 岡﨑淳史, データ同化を用いたモデル誤差ダイナミクスの逐次スパース同定, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 黒澤賢太, 岡﨑淳史, アンサンブル予測に基づく予測制御手法の構築と2018年7月豪雨への適用, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 服部由佳, 黒澤賢太, 岡﨑淳史, EFSO による観測インパクトの鉛直構造解析, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 大瀧晴登, 黒澤賢太, 岡﨑淳史, アンサンブル感度に基づく制御位置の最適化, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 眞辺将吾, 岡﨑淳史, 古日記に記される主観的情報を使用した古天気復元手法の開発, 日本気象学会2026年度秋季大会, 2026年10月26-30日, 京都.
  • 木野佳音, 岡崎淳史, Hayoung Bong, 芳村圭, 総観規模大気循環に伴う南大洋水蒸気同位体比変動：全球水同位体-気候モデルの抱える課題, 2026年10月26-30日, 京都.
  • 河﨑文俊, 黒澤賢太, 岡﨑淳史, 小槻峻司, Ultra Rapid Data Assimilationを用いたモデル再積分を必要としない高頻度予測更新, 2026年10月26-30日, 京都.
  • 樋口,
• AOGS 2026
  • Namegai, T., Yoshimura, K., Okazaki, A., Toride, K., Correcting Isotope-Enabled AGCM Output through Data Assimilation of GNIP Monthly Precipitation Isotope Data, AOGS, 2-6 Aug 2026, Fukuoka.
  • Cheng, J., Cauquoin, A., Okazaki, A., Yoshimura, K., Evaluating Isotopic Proxies Assimilation in Past Climate Reconstructions with Different Forward Models, AOGS, 2-6 Aug 2026, Fukuoka.
  • Kino, K., Okazaki, A., Bong, H., Yoshimura, K., Event-scale water vapor isotope variability over the Southern Ocean; implications for paleo proxy interpretation, AOGS, 2-6 Aug 2026, Fukuoka.
  • Ohtaki, H., Kurosawa, K., Okazaki, A., Optimization of Control Sites with Simplified Weather Models -a Case Study with Lorenz-96 and SPEEDY-, AOGS, 2-6 Aug 2026, Fukuoka.
  • Yamada, M., Sugawara, Y., Okazaki, A., Tsurushima, D., Furukawa, H., Saito, R., Chouno, C., Yamada, S., Hori, T., Quantification of Changes in Inundation and Economic Loss Due to Weather Intervention Using a 100-member Coupled Ensemble: 2015 Kanto-Tohoku Heavy Rainfall, Japan, AOGS, 2-6 Aug 2026, Fukuoka.
  • Li, Y., Cauquoin, A., Okazaki, A., Yoshimura, K., Improved response of δ18Osw in the Pacific Ocean to atmosphere-ocean interaction and ENSO using the isotope-enabled Fully Coupled Model MIROC6-iso, AOGS, 2-6 Aug 2026, Fukuoka.
• JpGU 2026
  • Cauquoin, A., Gusyev, M. A., Bong, H., Okazaki, A., Yoshimura, K., Modeling of tritium in precipitation and water vapor with an atmospheric general circulation model and its use as a hydrological tracer, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba. (Invited)
  • Higuchi, Y., Bai, Y., Okazaki, A., Yasunaga, K., Ogura, M., Sequential Weather Intervention Design Using Model Predictive Control and Black-Box Optimization, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • Kaneko, R., Okazaki, A., Kotsuki, S., Downscaling emulator with Classifier Free Diffusion Guidance Model, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • Mitsui, T., Okazaki, A., Kotsuki, S., Fujiwara, N., Tokuda, K., The real butterfly effect in control simulation experiments: a case study of the 2015 Kanto-Tohoku heavy rainfall, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • 大瀧晴登, 黒澤賢太, 岡崎淳史, アンサンブル感度に基づく制御位置の最適化, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • 鈴村巴, 岡崎淳史, 体感表現を利用した古気候復元の検討, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • 樋口篤志, 山本雄平, 市井和仁, 入江仁士, 小槻峻司, 齋藤尚子, 楊偉, 岡﨑淳史, 豊嶋紘一, 金子凌, 千葉大学環境リモートセンシング研究センターによるVL講習会の歩み, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • 江口菜穂, 笠井康子, 今須良一, 芳村圭, 取出欣也, 岡本幸三, 齋藤尚子, 花田俊也, 鈴木順子, 齊藤雅典, 岡崎淳史, 八田真児, 小型衛星コンステレーションによる水蒸気・同位体・氷雲・放射収支の観測ミッション, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
  • 三好建正, 大石俊, 富田浩文, 大塚成徳, Taylor James, Goodliff Michael, 佐藤正樹, 本田匠, 松岸修平, 吉岡真由美, 小槻峻司, 岡崎淳史, 岡本幸三, 幾田泰酵, 寺崎康児, 八代尚, 金丸佳矢, 山崎哲, 気象・海洋・陸面予測を革新する高頻度衛星観測システムの設計事前評価プラットフォーム, JpGU-AGU Joint Meeting 2026, 24-29 May 2026, Chiba.
• EGU 2026
  • Cheng, J., Cauquoin, A., Okazaki, A., Truax, O., Sinha, A., Li, H., Li, S., Yoshimura, K., A New Dataset of Global Climate and Hydroclimate Reconstructions over the Common Era, EGU26 General Assembly, 3-8 May 2026, Vienna, Austria.
  • Li, Y., Okazaki, A., Nitta, T., Cauquoin, A., Yoshimura, K., Constraining Future Temperature Projections using a Localized Spatiotemporal Emergent Constraint Approach, EGU26 General Assembly, 3-8 May 2026, Vienna, Austria.
• Selected as JST FOREST researcher (26/04/2026)
  • ChibaU
  • JST
• A press release about an isotope-enabled atmosphere-ocean coupled model, MIROC6-iso, was issued (04/13/2026)
  • ChibaU
  • ChuoU
• A press release about an water isotope model intercomparison project (WisoMIP) was issued (02/12/2026)
  • ChibaU
  • UT
• A press release about oxygen-isotope measurement was published (02/25/2025)
  • AIST
• Start working at Chiba University as an associate professor (10/01/23)
• Awarded “Hirosaki University Outstanding Young Tehsis Award” (10/21/2022)
• Will attend Uncertainty quantification in models and data, 30th PMIP anniversary as a panelist on 3 Dec. 2021.
• Our research achievement was introduced by a newspaper!
  • Nikkei (07/07/21)
  • Toonippo (07/11/21)
• A press release about GPR was published (07/07/21)
  • JAXA
• start working at Hirosaki University as an assistant professor (03/01/21)