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Cloud and precipitation physics

@A variety of physical processes are involved in cloud formation and precipitation development. Clouds form in the atmosphere as a result of the condensation or deposition of water vapor on aerosol particles (i.e., cloud condensation nuclei for water clouds or ice nuclei for ice-crystal clouds). Precipitation begins to form in clouds as water droplets or ice crystals. Through the processes of vapor diffusion and collision- coalescence, particles grow to form rain, snow, graupel or hailstones. Upon entering warmer air, much of this solid precipitation melts to form rain before reaching the ground. These cloud and precipitation processes are complex, and many aspects of them still remain to be solved despite their importance in precipitation forecasting, climate change and weather modification researches.
@Our laboratory has conducted field observations, laboratory experiments and numerical modeling to elucidate these cloud and precipitation processes.

Cloud and precipitation physics

Cloud and precipitation physics

Current research programs

  • Internal Research Project "Study on Planned and Inadvertent weather modification"@(FY2009-FY2013)
  • Kakenhi (Grants-in-Aid for Scientific Research) "Study on CCN and IN abilities of Asian Dust, Biogenic and Anthropogenic Aerosols" (FY2011-FY2013)
  • The Joint Research Project for a Renewal of ground-Based AgI generator at Ogouchi Dam (conducted by Bureau of Water Work, Tokyo Metropolitan Government and Meteorological Research Institute) (FY2011-2013)

Past research programs

  • The Program of Special Coordination Funds for Promoting Science and Technology "the Japanese Cloud Seeding Experiments for Precipitation Augmentation (JCSEPA)" funded by the Ministry of Education, Culture, Sports, Science and Technology, Japan (FY2006-2010)
  • The Joint Project of the Orographic Snow Cloud Modification by Seeding (conducted by Tone River Dams Integrated Control Office and Meteorological Research Institute) (FY1994-2011)
  • The Core Research for Evolutional Science and Technology, ''Studies on structure and formation/development mechanisms of mesoscale convective systems,'' funded by the Japan Science and Technology Agency (FY1998-2002)
  • "The Japanese Cloud-Climate Study (JACCS)" funded by Ministry of Education, Culture, Sports, Science and Technology (FY1991-1999)
  • "The Study of Precipitation Formation in Snow Clouds and Feasibility of Snow Cloud Modification by Seeding'', funded by the Science and Technology Agency of Japan. (FY1988-1992)