Paper
- Kishikawa, D., Muto, M. and Kotsuki, S.: Conditional Diffusion Models for Global Precipitation Map Inpainting, Jul. 2025. preprint at arXiv
- Shiraishi,K., Muto,Y., Okazaki, A. and Kotsuki, S.: Wasserstein GAN-Based Precipitation Downscaling with Optimal Transport for Enhancing Perceptual Realism, Jul. 2025. preprint at arXiv
- Kotsuki, S., Shiraishi, K., and Okazaki, A.: Ensemble data assimilation to diagnose AI-based weather prediction model: A case with ClimaX version 0.3.1, Geosci. Model Dev., 2025. preprint at arXiv (accepted)
- Imoto, Y. and Yokoyama, T.: Filtrations Indexed by Attracting Levels and their Applications, Jun. 2025. preprint at arXiv
- Zhang, Z., Susuki, Y. and Okazaki, A.: Extracting transient Koopman modes from short-term weather simulations with sparsity-promoting dynamic mode decomposition, Jun. 2025. preprint at arXiv
- Hirabayashi, Y., Matsuoka, D.: Data-driven Mesoscale Weather Forecasting Combining Swin-Unet and Diffusion Models, Mar. 2025. preprint at arXiv
- Mitsui,T., Kotsuki, S., Fujiwara, N., Okazaki, A. and Tokuda, K.: Bottom–up approach for mitigating extreme events under limited intervention options: a case study with Lorenz 96, Mar. 2025. preprint at EGUsphere
- Kawasaki, F., Okazaki, A., Kurosawa, K., Tsuyuki, T. and Kotsuki, S.: Model Predictive Control with Foreseeing Horizon Designed to Mitigate Extreme Events in Chaotic Dynamical Systems, Apr. 2025. preprint at EGUsphere
- Oettli, P., Tokuda, K., Imoto, Y. and Kotsuki, S.: Meteorological Landscape of Tropical Cyclone, Apr. 2025. preprint at EGUsphere
- Kurosawa, K., Okazaki, A., Kawasaki, F. and Kotsuki, S.: Bridging Data Assimilation and Control: Ensemble Model Predictive Control for High-Dimensional Nonlinear Systems, Feb. 2025. preprint at EGUsphere (accepted)
- Tsuyuki, T., Kawasaki, F. and Kotsuki,S.: Four-Dimensional Variational Data Assimilation Using the Second-Order Incremental Approach and Quantum Annealing, J. Meteorol. Soc. Jpn, 103(5), 629-647, Oct. 2025. doi: 10.2151/jmsj.2025-032
- Nagai, R., Bai, Y., Ogura,M., Kotsuki, S. and Wakamiya, N.: Evaluation of the effectiveness of an intervention strategy in a control simulation experiment through comparison with model predictive control, Nonlin. Processes Geophys., 32(3), 281–292, Aug. 2025. doi: 10.5194/npg-32-281-2025
- Takamichi, K., Susuki, Y. and Netto, M.: Participation Factors for Nonlinear Autonomous Dynamical Systems in the Koopman Operator Framework, IEEE Transactions on Automatic Control (Early Access), 1-16, May 2025. doi: 10.1109/TAC.2025.3574309
- Jinno, T., Mitsui, T., Nakai, K., Saiki, Y., Yoneda, T.: Long-term prediction of El Niño-Southern Oscillation using reservoir computing with data-driven realtime filter, Chaos, 35(5), May 2025. doi: 10.1063/5.0261124
- Ohtsuka, T., Okazaki, A., Ogura, M. and Kotsuki, S.: Convex Optimization of Initial Perturbations toward Quantitative Weather Control, SOLA, 21, 158-166, Mar. 2025. doi: 10.2151/sola.2025-020
- Tokuda, K. and Katori.Y.: Prediction of Unobserved Bifurcation by Unsupervised Extraction of Slowly Time-Varying System Parameter Dynamics from Time Series Using Reservoir Computing, Frontiers in Artificial Intelligence, Oct. 2024. doi: 10.3389/frai.2024.1451926
- Katayama, N. and Susuki, Y.: Koopman analysis of the singularly perturbed van der Pol oscillator, Chaos, 34(9), Sep. 2024. doi: 10.1063/5.0216779
- Oettli, P. and Kotsuki, S.: An Objective Detection of Separation Scenario in Tropical Cyclone Trajectories Based on Ensemble Weather Forecast Data. J. Geophys. Res., 129(14), Jul. 2024. doi: 10.1029/2024JD040830
- Kawasaki, F. and Kotsuki, S.: Leading the Lorenz 63 system toward the prescribed regime by model predictive control coupled with data assimilation, Nonlin. Processes Geophys., 31(3), 319–333, Jul. 2024. doi: 10.5194/npg-31-319-2024
- Kotsuki, S., Kawasaki, F., and Ohashi, M.: Quantum data assimilation: a new approach to solving data assimilation on quantum annealers, Nonlin. Processes Geophys. Lett., 31(2), 237-245, Jun. 2024. doi: 10.5194/npg-31-237-2024
- Masunaga, H., Takahashi, H.: The Energetics of the Lagrangian Evolution of Tropical Convective Systems, J. Atmos. Sci., 81(4), 783–799, Apr. 2024. doi: 10.1175/JAS-D-23-0141.1
- Aizawa, J., Ogura, M., Shimono, M., Wakamiya, N.: Temporal deep unfolding-based MPC for controlling firing patterns of neuronal network, in 2023 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 2023.
- Ogura, M. and Wakamiya, N.: Reduced-order model predictive control of a fish schooling model, Nonlinear Analysis: Hybrid Systems 49, 101342, Aug. 2023. doi: 10.1016/j.nahs.2023.101342
- Ouyang, M., Tokuda, K., and Kotsuki, S.: Reducing manipulations in a control simulation experiment based on instability vectors with the Lorenz-63 model, Nonlin. Processes Geophys., 30(2), 183-193, 2023. doi: 10.5194/npg-30-183-2023
- Li, A., Ogura, M. and Wakamiya, N.: Proposal of a bearing-only shepherding algorithm with limited sensing capabilities, AROB-ISBC-SWARM 2023, GS34-1, Jun. 2023.
- Ogura, M. and Martin, C. F.: Mean Escape Time of Switched Riccati Differential Equations, Journal of the Franklin Institute 360(10), 6827–6845, Jul. 2023. doi: 10.1016/j.jfranklin.2023.04.034
- Matsuki, A., Kori, H., and Kobayashi, R.: An extended Hilbert transform method for reconstructing the phase from an oscillatory signal, Sci. Rep., 13, 3535, Mar. 2023. doi: 10.1038/s41598-023-30405-5
Project Presentation at Conference and Outreach
- Sugimoto, S., Chu, I. and Tachibana, K.: Coffee with an Author Session “Exploring Business Virtue Ethics: Learning from Koji Tachibana (ed.), Alternative Virtues: Japanese Perspectives on Christian and Confucian Traditions (Routledge, 2025)”, Society for Business Ethics, Annual Conference 2025, Jul. 26, 2025.
- Tachibana, K.: AI and Geoengineering Against Climate Change, The King's Festival of Artificial Intelligence 2025, May 20-24, 2025.
- Tachibana, K.: Perceptions of nature and the ethics of geoengineering technologies, University of Information Technology and Management in Rzeszow, May 6, 2025.
- Kotsuki,S.: Exploring weather control technology to steer the atmosphere towards favorable directions, 9th International Symposium on Data Assimilation, Oct.16-20, 2023.
- Kotsuki, S.: Quantifying Weather Controllability and Mitigatable Flood Damage Based on Ensemble Weather Forecast, 10th International Congress on Industrial and Applied Mathematics (ICIAM) 2023, Aug.23, 2023.
- Kotsuki, S.: Quantifying weather controllability and avoidable damage by the weather control, Japan Academic Network for Disaster Reduction, Special Symposium "Changes in the environment surrounding natural disasters", Oct.22, 2022.
- Kotsuki, S.: A World Beyond Predictions, Lecture for comprehensive cooperation between Chiba Univ and Ricoh Co. Ltd., Oct.5, 2022.
