My training in geology and sedimentology has instilled in me a deep fascination for Earth history, which to this day motivates my research. In the age of man-made alteration of the environment it is becoming a high priority to develop a detailed understanding of natural geochemical, biological and physical processes as well as their respective coupling on various timescales. Therefore, I take a computational approach to reconstruct the biogeochemical evolution of the ocean and atmosphere, with a special emphasis on the global carbon cycle and its relationship to the biological utilization of nutrients in the ocean.
The core of my research so far may be summarized by two broad questions that I will explore into the future:
How are the global cycles of carbon, essential nutrients and other major elements connected to ocean circulation and the state of the climate system? To address this question, I develop geochemical models and novel numerical diagnostic techniques. I am constantly working to expand my competence in programming, algorithm development and the underlying geochemical principles, with an eye toward new computational techniques that have not been harnessed by the paleoclimate and geochemistry communities.
What can Earth’s history teach us about the future under human alteration of the environment? Beyond man-made “global warming,” human activities may lead to an array of geochemical changes, such as affecting ocean pH, with possibly severe environmental effects. Geologic archives hold information on past events that – if we can decipher them – may be taken as a guide to what global changes await us. These topics are clearly of interest far beyond the realm of basic science, and in the near future I hope to advance my own thinking and teaching in this direction.
- The Ice Age Ocean: Development of diagnostic and analytical tools to parse CO2 change into its components.
- Cenozoic Carbon Cycle: Parameter space inversion of a global carbon cycle model to constrain past ocean geochemistry.
- Nitrate Dual Isotopes: Ocean nutrient dynamics and the biological productivity of the ocean.
- Climate and Tectonics: Tectonic compartmentalization of the Andean foreland, NW Argentina. (finalized)