Welcome to the HP of Takahito Mitsui

I'm investigating (paleo)climate dynamics and weather control at Juntendo University.
My research topics are

• ice age cycles (glacial-interglacial cycles)
• millennial-scale abrupt climate changes (Dansgaard-Oeschger events)
• current interglacial climate (Holocene) and future 
  
• climate tipping points
• Indian summer monsoon 
• controlling extreme weather events

with the aid of

• mathematical modelling, in the use of data assimilation techniques (nonlinear Kalman filtering)
• dynamical systems analysis of climate models (bifurcations, quasiperiodicity, chaos, strange nonchaotic attractor (SNA), synchronizations, as well as noise-induced oscillations)
• machine learning (reservoir computing)
• Climate modelling with Atmosphere-Ocean General Circulation Models

Recent preprint (not reviewed)
Mitsui, T. (2026). Beyond the 100-kyr and 41-kyr dichotomy:~ 76-kyr and~ 52-kyr signals and forbidden periodicities.

Recently published paper: 

Bottom–up approach for mitigating extreme events with limited intervention options: a case study with Lorenz 96 model, Takahito Mitsui, Shunji Kotsuki, Naoya Fujiwara, Atsushi Okazaki, and Keita Tokuda, Nonlinear Processes in Geophysics, 32, 457–469, 2025.

100 kyr ice age cycles as a timescale-matching problem, Mitsui, Ditlevsen, Boers, Crucifix, Earth System Dynamics 16, 1569-1584, 2025 

Featured article:  Long-term prediction of El Niño-Southern Oscillation using reservoir computing with data-driven realtime filter, Jinno et al., Chaos, 35, 053149 (2025)

Press release for ERL article on the prediction of Indian Summer Monsoon onset

Our paper is published in Nature 

P.C. Tzedakis, M. Crucifix,  T. Mitsui and E.W. Wolff, A simple rule to determine which insolation cycles lead to interglacials, Nature vol. 542, pp. 427–432 (2017) doi:10.1038/nature21364

Takahito Mitsui
Juntendo University, Faculty of Health Data Science

Hinode 6-8-1, Urayasu, Chiba, 279-0013 Japan
Email: takahito321ATgmail.com (change AT by @)