Research statement
I am interested in many topics on Environmental Geochemistry including atmospheric chemistry, biogeochemistry, etc. My motivation driven by curiosity is not limited to a “-sphere” (atmosphere, biosphere, cryosphere, etc.) or a “-phase” (gas-phase, liquid-phase, and solid-phase) but opened to the entire system in the Earth and Space. The ultimate motive of my research is to understand the origins and evolutions of all elements. My previous and current research projects span from fundamental isotope effects (e.g. kinetic and equilibrium fractionations for atmospheric photochemistry, microbial metabolism) to their applications in various fields including polar regions of Antarctica, Arctic, and “Third Pole” like the Tibetan Plateau and the Himalayas. In addition to the isotopologues analyses for the laboratory-based experiments and field campaigns, I also use global chemical transport models (GEOS-Chem) to help the quantitative understanding.
My motivation is also opened to the development of the new analytical method for new isotopologues. I have so far developed several analytical systems by myself and I am familiar with high throughput isotopic measurements by laboratory automation. I believe the new finding is always created by the innovative isotope tracers such as the mass-independent isotope effects (MIF), site-specific isotope effect (SP), and clumped isotope effect (Clumped). I served as an elected councilor of the Geochemical Society of Japan between 2019-2021, and served as the secretary for event mission for Geochemical Society of Japan.
Keyword: MIF; SP; Clumped; KIE; Aerosols (sulfate, nitrate, ammonium); Oxidants (O3, OH, H2O2); Carbonyl sulfide (COS or OCS); Ice Core; Glacier; Photochemistry; Microbial ecosystem; Atmospheric acidity Fields: Atmosphere (troposphere and stratosphere), Biosphere, Cryosphere
