Research Topics
Ocean Biogeochemistry and Climate through Earth's History
Anthropocene
We investigate the impact of anthropogenic activities on the marine N cycle
Quaternary
We focus on the role of the ocean in driving atmospheric CO2 during ice ages
Pliocene
The Pliocene is a geological analogue to study the Earth's system in a warmer climate
Cenozoic
We also study long-term climate changes over the Cenozoic era, i.e. the past 65 My
Terrestrial Climate and Environmental Changes in the past
Speleothems
We analyze biomarkers and N isotopes to reconstruct terrestrial climate in the past
Lakes
We analyze biomarkers and their isotopes to reconstruct terrestrial climate in the past
Loess
We analyze biomarkers and their isotopes to reconstruct terrestrial climate in the past
Ice cores
We use N isotopes to study atmospheric circulation and chemistry in the past
Biogeochemical changes in the modern Ocean
N cycle
We use N and O isotopes of nitrate to study N cycle dynamics in the modern ocean
Proxy validation
Ground truthing studies of different environmental proxies in the modern ocean