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Chief Scientist Laboratories Prediction Science Laboratory

Chief Scientist: Takemasa Miyoshi (Ph.D.)

Research Summary

Takemasa  Miyoshi(Ph.D.)

Integrating the Simulation Science (3rd science) and Data Science (4th science), our long-term goal is to establish the new “Science of Prediction” as the 5th scientific paradigm. Prediction and control have long been studied, but it is still a challenge to apply the traditional methods to large-scale, complex problems. Here we aim to establish the science for prediction and control for large and complex real-world problems. Human society is facing difficult problems such as environmental change, natural resources, population, medicine and health, at the individual level to the global scale. The “Prediction Science” will be a hub connecting a wide range of human knowledge, providing an objective, scientific approach based on prediction to the sustainable development of human society.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Engineering
  • Informatics
  • Environmental Science
  • Complex Systems
  • Mathematical & Physical Sciences
  • Computational Science
  • Fundamentals of Information Science
  • Earth and Planetary Science


  • prediction
  • optimal control
  • dynamical systems
  • computation
  • data assimilation

Selected Publications

  • 1. Kotsuki, S., K. Kurosawa, S. Otsuka, K. Terasaki, and T. Miyoshi.:
    "Global Precipitation Forecasts by Merging Extrapolation-Based Nowcast and Numerical Weather Prediction with Locally Optimized Weights"
    Wea. Forecasting, 34, 701–714 (2019).
  • 2.Kotsuki S., Kurosawa K., and Miyoshi T.:
    "On the Properties of Ensemble Forecast Sensitivity to Observations"
    Quarterly Journal of the Royal Meteorological Society, 145, 1897-1914 (2019).
  • 3.Kondo, K., and Miyoshi, T.:
    "Non-Gaussian statistics in global atmospheric dynamics: a study with a 10 240-member ensemble Kalman filter using an intermediate atmospheric general circulation model"
    Nolin. Processes Geophs., 26, 211-225 (2019).
  • 4.Shigenori OTSUKA, Shunji KOTSUKI, Marimo OHHIGASHI, Takemasa MIYOSHI:
    "GSMaP RIKEN Nowcast: Global Precipitation Nowcasting with Data Assimilation"
    Journal of the Meteorological Society of Japan. Ser. II, 2019, Volume 97, Issue 6, Pages 1099-1117 (2019).
  • 5.Kotsuki, S., Sato, Y., & Miyoshi, T.:
    "Data assimilation for climate research: Model parameter estimation of large‐scale condensation scheme"
    Journal of Geophysical Research: Atmospheres, 125, e2019JD031304 (2020).

Recent Research Results

Annual research report


Related Links

Contact Information

Lab Members

Principal investigator

Takemasa Miyoshi
Chief Scientist

Core members

Cedric HoThanh
Postdoctoral Researcher


Position Deadline
Seeking a few Research Scientist, Postdoctoral Researcher or Research Associate (CPR-PS2303) Open until filled

Tel: +81-(0)78-940-5810
Tel: +81-(0)78-304-4961
Email: da-team-desk [at] ml.riken.jp