Tropical cyclones with maximum sustained surface winds of more than 17.2m/s (34 kt), which are called tropical storms, are generated over the western North Pacific with an average of nearly 27 per year. About three of them usually make landfall over Japan in summer and/or autumn. Strong tropical cyclones with maximum wind exceeding 33m/s (64kt) are called typhoons in the western North Pacific. The typhoon is one of the most feared and deadly weather systems on earth and causes tremendous damage and loss of life. In particular, severe typhoons cause damages of infrastructure by destructive winds, severe floods and high storm surges. However, rainfall by typhoons is required to reserve water resources which sre valuable for our life. Typhoon Research Department has proceeded to develop numerical models for the purpose of improvement of typhoon prediction. Also, our group has studied processes of genesis, intensification, extratropical transition of typhoons, and specific cases which are closely ralated to disasters caused by typhoons.

• Study on environmental factors associated with typhoon intensity
  
  • Method on typhoon intensity estimate using satellite observations
  • Optimum observations for typhoons
  • Understanding the mechanism of strong wind and heavy precipitation accompanied by typhoons
  • Analysis of tropical thermal environment
• Research on development of advanced global atmospheric data assimilation
  
  • Development of data assimilation methodology
  • Development of satellite data usage

• Research on development of next generation non-hydrostatic numerical prediction model
• Analytical and statistical research on mechanism elucidation of extreme event
• Research on mesoscale data assimilation and ensemble forecast
• Research on monitor of severe weather and the advancement of risk diagnosis technology
• Development of global and regional ocean data assimilation systems
• Research on analysis and the mechanism elucidation of carbon cycle change in the ocean

• Tropical weather forecast using global cloud resolution model: verification of simulation results by observation data

• Study on prediction and understanding of meso-scale weather phenomena with a non-hydrostic model (Collaboration in MRI)
  
• Study of processes of structual change of typhoons passed by surrounding Japan and specific cases of high wind, heavy rains and storm surge caused by the typhoons (Collaboration in MRI)
  
• Numerical study of severe storms using the non-hydrostatic model(1st lab.)
  
• Study of structual change of typhoons using remote sensing data (2nd lab.)
  
• Study of typhoon prediction using a numerical model. (1st lab.)
  
• Construction of database of landfalling typhoons in 2004 and their preliminary review.
  
  

• Recent Publication
  

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