Congratulations to Dr. Xuyuan Ellen Ai for successfully defending her Ph.D. Thesis

Written by
The Department of Geosciences
Jan. 24, 2023



The Department of Geosciences,
Princeton University


Ellen Ai

on successfully defending her Ph.D. thesis

"On the Role of the Southern Ocean in the Glacial-Interglacial Cycles of the Past 460,000 Years: Changes in Wind-Driven Upwelling and Ocean Front Position Revealed by Reconstructed Surface Ocean Nutrient Conditions and Temperatures"


January 10, 2023

Adviser:  Daniel M. Sigman

The examining committee members were:

Daniel Sigman, John Higgins, Laure Resplandy and Alfredo Martinez-Garcia (Max Planck Institute