My research builds records of past climate changes using geochemical tools, with a focus on applications of uranium-series isotopes. My current projects seek to improve our understanding the response of atmospheric circulation and the hydrological cycle to different boundary conditions. In marine sediments, I use uranium and thorium isotopes to quantify accumulation rates in an effort to understand changes in the emission and transport of dust from the world’s drylands. In speleothems and lake carbonates, uranium and thorium provide precise and accurate dating of changes in water balance and precipitation source. Building upon these robust chronologies, we can then compare records from different locations in order to build a global picture of past climate changes.
I’m always happy to talk to prospective graduate students and postdoctoral researchers. Please feel free to contact me to discuss possible projects.