- Atmospheric evolution
(terrestrial samples and SNC/Martian meteorites)
- Atmospheric deposition
(environmental studies of nitrate and sulfate)
- Studies of the cosmochemistry
(evolution of water early in solar system )
- Developing tools to investigate the
antiquity of biological processes
- Developing tools to investigate the flow of sulfur
through geological, biological, and sedimentary systems
- Experimental studies of
photochemical mass-independent isotope effects
- Determination of the changes in the isotopic
composition of the oceans through time
- Co-evolution of life and the surface environment
across critical transitions in the history of Earth and Life
- Role of water in climate change processes on
interannual to centennial timescales
- Paleoclimatic field reconstruction from sparse
observational networks of proxy observations
- Paleoclimatology of ENSO
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