I'm a Lecturer in the School of Earth Sciences at the University of Bristol. Formerly of the GFZ Potsdam, Yale and Southampton University, I am an isotope geochemist, with wide-ranging scientific interests, but a particular focus on understanding modern biogeochemical carbon fluxes, Earth's long-term carbon cycle and the response of Earth's climate to changes in pCO 2 . I have done a lot of work in the development and application of geochemical proxies for past CO 2 levels, ocean pH, and palaeotemperature,
I'm currently PI of two DFG grants, one looking at the evolution of the global boron cycle over the past ~100 Million years, and one looking at potential for secular changes in the Earth's silicate weathering feedback to drive warming events- with the Middle Eocene Climatic Optimum the primary focus. I am also involved in two further DFG grants as part of the SPP2299 , looking at the effect of bleaching on modern and fossil Eocene corals.
I'm also leading the PETRARCH project , which aims to detangle the specific abiotic and biogeochemical drivers that intersect to drive ocean anoxia. We'll be developing radiolarian silica as a new archive for boron isotopes, and combining this with established methods to use the Cretaceous Ocean Anoxic Events as useful case studies in how Earth crosses thresholds into profound global marine anoxia.