Research Interests/Activities

• Stratosphere-troposphere exchange processes in the tropics
  • Dynamics, radiation, microphysics, and photochemistry in the tropopause region
  • Role of equatorial Kelvin waves and other disturbances
• Tropospheric ozone photochemistry
  • Tropical tropospheric ozone and biomass burning
  • Surface ozone variability in Sapporo
• Layers in the atmosphere
• Observation technologies
  • Meteolabor Snow White - cooperative development and validation of a radiosonde hygrometer
  • Cloud-particle digital imager
  • CO2 sonde
  • Yamatake FineDew
• Tropical meteorology

---

• Projects
  • SPARC Reanalysis/analysis Intercomparison Project, S-RIP (S-RIP website, SPARC Data Assimilation & S-RIP, )
  • Soundings of Ozone and Water in the Equatorial Region (SOWER)
  • Southern Hemisphere ADditional OZonesondes (SHADOZ) (see also nasda archive)
  • GCOS Reference Upper-Air Network (GRUAN)
  • Chemistry-Climate Model Validation Activity for SPARC (CCMVal) (Upper-troposphere-lower-stratosphere (UTLS) part)

---