Research
Scientific programs
The laboratory combines isotope measurements, environmental observations, and chemical models to investigate processes across atmospheric, Earth, and planetary systems.
Atmospheric oxidation
Ozone-mediated chemistry, reactive nitrogen, aerosols, air pollution, and mechanistic links to human exposure.
- Ozone and particulate interactions
- Nitrate isotope applications
- Aerosol oxidation capacity
Triple oxygen isotopes
Analytical methods and isotope constraints on atmospheric CO₂, O₂, ozone, nitrate, and exchange reactions.
- CO₂–O₂ exchange methods
- Atmospheric isotope anomalies
- Biogeochemical applications
Earth system processes
Carbon and water cycles, productivity, hydrology, geochemistry, paleoclimate, and hydrosphere–lithosphere interaction.
- Global gross primary production
- Modern hydrological cycles
- Geological archives and water–rock exchange
Planetary atmospheres
Atmospheric chemistry, aerosols, isotopic fractionation, climate, and habitability from Venus and Titan to exoplanets.
- Gas-phase photochemistry
- Ice-phase heterogeneous chemistry
- Atmospheric evolution and habitability
Integrated approach
Why these programs belong together
Across these programs, isotopic composition is treated as a process tracer rather than merely a descriptive measurement. The laboratory asks how chemistry, transport, biological exchange, and physical phase changes leave distinguishable isotope signatures.
The same reasoning links atmospheric oxidation on Earth, carbon and water cycling, geological records, and photochemical processes in planetary atmospheres.