Other

Doctor of Science

Middle Atmosphere Sciences

Recently following issues have been studied by the use of satellite data, simulation data based on general circulation models and numerical prediction data based on operational models of the Japan Meteorological Agency:
(1)Stratosphere-troposphere coupling
1. Predictability of stratospheric sudden warmings
2. Meridional circulations and mass transport associated with stratospheric sudden warmings
3. Analyses of the stratosphereic sudden warming in the Southern Hemisphere during September 2002 and its predictability
4. Eastward traveling waves of zonal wavenumber 2 in the Southern Hemisphere stratosphere
(2) Relation of the stratospheric circulation to the MLT region
1. Circulation hanges in the MLT region during stratospheric sudden warming events
(3) Long-term changes of the stratospheric circulation
1. Long-term changes of the stratospheric circulation simulated in the CCSR/NIES CCM
2. Relationship between interannual changes of stratospheric ozone and the general circulation
3. Quasi-stationary waves of the Southern Hemisphere and the ozone croissant
(4) Large-scale waves in the middle atmosphere
1. Analyses of thermal tides in the stratosphere and the comparison to general circulation model simulation
2. Rossby normal modes in the ozone field
3. Appearance characters of various modes

Japan Meteorological Society Award in 1991

Research Interests

• Predictability of stratospheric sudden warmings
  keyword : Stratospheric sudden warmings, Predictability, Ensemble forecast
  2003.04.
• Circulation hanges in the MLT region during stratospheric sudden warming events
  
  keyword : Stratospheric sudden warming, Stratosphere, Upper mesosphere, Lower thermosphere
  2010.04.
• Atmospheric tides in the upper stratosphere and lower mesosphere
  keyword : Atmospheric tides, Diurnal tides, Upper stratosphere, Lower mesosphere
  2003.04.
• Long-term changes of stratospheric circulations
  keyword : Stratospheric circulations, Ozone hole, Planetary waves
  1993.04.
• Stratosphere-troposphere dynamical coupling
  keyword : Stratospheric circulation, Tropospheric circulation, Stratospheric sudden warming
  2000.04.

Current and Past Project

• Investigation of circulation changes of MLT region during stratospheric sudden warming events by the use of various numerical models models along with reanalysis data
• Investigation of interaction mechanisms between stratospheric sudden warming events and the tropospheric circulation by the use of various numerical models models along with reanalysis data
• Investigation of effects of stratospheric ozone changes on the general circulation and climate by the use of coupled chemistry-climate models (CCMs) with sophisticated stratospheric chemistry
• Stratospheric processes and thier dynamical roles in climate changes
• Modeling and quantitation for solar influences on the atmosphere
• Comprihensive studies of formation mechanisms and variations of tropospheric circulations by the use of recent global re-analysis data
• Characteristics of atmospheric gravity wave activity in the polar regions revealed by GPS radio occultation data with CHAMP

Academic Activities Membership in Academic Society

• Meteorological Society of Japan
• American Meteorological Society
• COSPAR(Committe on Space Research)
• Japan Geoscience Union
• American Geophysical Union

Educational Activities Other Educational Activities

• 2010.04,In a new education program introduced by The Graduate School of Sciences of Kyushu University, I have been engaged in a program manager of the Advanced Scientist Development Program since October 2007. .
• 2009.04,In a new education program introduced by The Graduate School of Sciences of Kyushu University, I have been engaged in a program manager of the Advanced Scientist Development Program since October 2007. .
• 2008.04,In a new education program introduced by The Graduate School of Sciences of Kyushu University, I have been engaged in a program manager of the Advanced Scientist Development Program since October 2007. .
• 2007.10,In a new education program introduced by The Graduate School of Sciences of Kyushu University, I have been engaged in a program manager of the Advanced Scientist Development Program since October 2007. .