Carbon regulates climate, it dissolves in seawater, and it is the main component of all biomass. We use models and observations to reconstruct the global carbon cycle and its connection to climate change of the past. This work combines carbon cycle modeling and detailed geochemical calculations to better quantify past change from indirect proxy measurements. This line of research ultimately aims to inform ongoing ocean acidification and the climate response to anthropogenic CO2 rise.
Current areas of work include:
- Ice age CO2 cycles of the Late Pleistocene
- Climate and CO2 change during the Mid Pleistocene Transition
- Reconstructing ocean pH and CO2 climate forcing from boron isotope data
- Seawater major ion composition and carbonate equilibrium constants
- Radiocarbon at the end of the last ice age