* My Research[#rfe07662]
[[in Japanese>research-j]]
** Scientific Interests (as of Oct 2006) [#v05bc9eb]
** Scientific Interests (as of Jan 2009) [#v05bc9eb]
***Study on processes of the stable water isotopes circulation [#ke2c9752]
-Numerical modeling of hydro-isotopic cycles in the atmosphere, terrestrial surface, and ocean and their interactions.
-Mechanism of hourly through interannual variations in stable water isotopes ratio of precipitation, and quantitative review of their proxies.
-Estimate and analyze precipitation source regions
-Relationship of isotopes and climate, and mechanism of appearance of the past climates’ isotopic proxies
-Isotopic analysis and development of a monitoring method.
***Study on terrestrial hydrologic cycles [#jea33b48]
-Model land surface processes, a macro scale rain-runoff mechanism in particular
-Develop a river discharge simulation model with anthropogenic effect and structures
-Predict river discharge and other terrestrial hydrologic variables for prevention of hazardous situation / early and effective warning
-Analyze risk of water-related hazards in the global warming scenarios
***Stable water isotopes circulation [#ce4dc0b4]
-Numerical modeling of global and regional isotope circulation.
-Minutes to interannual variations of stable water isotopes ratio in precipitation and vapor, and their quantitative interpretation as proxies.
-Estimation and analysis of precipitation source regions
-Relationship between isotopes and climate, and mechanism of appearance of the past climates’ isotopic proxies
-In-situ and remote-sensing observation.
***Dynamical downscaling [#ea66ebef]
-Development and improvement of AGCM and RCM
-Methodology development of the dynamical downscaling.
-Past and future changes in meso-scale climate and extremes.
-Application studies on current and future water and energy issues.
***Data assimilation [#a1e4da14]
-"Isotope Reanalysis".
-Ensemble Kalman filtering.
-Data assimilation of vapor isotopes observed by the satellite and ground-based spectroscopy sensors.
***Terrestrial hydrologic cycles and impact assessment [#uf4e55a1]
-Land surface modeling, a macro scale rain-runoff mechanism in particular.
-Development of a river discharge simulation model with anthropogenic activity.
-Prediction of river discharge and other terrestrial hydrologic variables for prevention of hazard and early warning.
-Risk analysis of water-related hazards in the global warming scenarios.
-A case study of a water-related hazard
***Data assimilation [#p3a706da]
-Review feasibility of data assimilation of stable water isotopes in the atmosphere
***Biogeochemical cycle [#f1d49e2e]
-Estimate pollution source with biogeochemical tracers
-Study atmospheric transport of chemical material and model the mechanism
***Biogeochemical cycle [#ude5f40d]
-Modeling and data assimilation for global CO2 cycle.
-Estimation of pollution source with biogeochemical tracers
-Modeling of atmospheric transport with chemical process.
** Contents [#h5843466]
#ls2
