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

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

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