Jesse Farmer is a Postdoctoral Research Fellow at Princeton University and Max Planck Institute for Chemistry. Jesse's research focuses on the dynamics of the ocean carbon reservoir across past climate states. Small changes to the quantity of carbon stored within the oceans can greatly affect the concentration of atmospheric greenhouse gases and thus global climate. In the Sigman laboratory, Jesse uses the nitrogen isotopic composition of organic matter within marine carbonates to test how the biological utilization of nutrients has changed in key ocean regions during the past 5 million years. Jesse received a B.S. from Brown University and a Ph.D. from Columbia University. He is an avid surfer and never strays too far from the ocean.