Climate Science Research
Nakamura Laboratory

Understanding formation and variability of the climate system and extreme weather through big data analysis and diversified numerical simulations

Deciphering Earth's climate system from a viewpoint of ocean-atmosphere interactions

Earth's atmosphere and ocean interact mutually to form the climate system, which varies internally owing to its chaotic nature. Superimposed on the ongoing anthropogenic warming, the internal variability acts to enhance the likelihood of extreme weather events and associated natural disasters. Our research aims at deepening our understanding of the climate variability and predictability of those events, by utilizing huge “reanalysis climate data”, into which past observational data have been assimilated through a modern forecast system to reproduce the history of the evolving climatic state four-dimensionally. Numerical simulations with ocean/atmosphere models, especially with many ensemble members integrated from slightly modified initial conditions, are utilized for clarifying mixed causality behind the variability and extreme events and assessing their predictability.

Producing regional atmospheric reanalysis data over Japan for broad business applications

Despite the continuous production of the global atmospheric reanalysis data by the Japan Meteorological Agency (JMA), no regional atmospheric reanalysis data are thus far available for Japan.
Under the funding by the Japan Agency for Science and Technology (JST) and close collaboration with JMA, we initiated a 10-year project “ClimCORE” in late 2020 to produce high-resolution atmospheric reanalysis data over Japan and its surrounding maritime domain for broad business and community applications.

Member

• 
• • Professor
    Hisashi NAKAMURA
  Specialized field: Dynamics for climate variability and extreme weather, air-sea interaction

• 
• • Project Associate Professor
    Takafumi MIYASAKA
  Specialized field: Climate variability, Extreme weather, Air-sea interaction

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