
Angela J. Rigden
Assistant Professor
arigden@uci.edu
Office: 3327 Croul Hall
Interests: hydrology, plant physiology, agronomy, remote sensing, climate change
Dr. Rigden is an Assistant Professor in the Department of Earth System Science at the University of California, Irvine. Prior to joining ESS, she was a postdoctoral researcher at Harvard University in the Department of Earth and Planetary Sciences with a fellowship from the Planetary Health Alliance. She completed her PhD at Boston University in the Department of Earth and Environment with a certificate in Biogeoscience. Dr. Rigden explores interactions between the biosphere and atmosphere using multi-scale data and models. Her most recent work focuses on understanding the implications of a changing water cycle on agriculture across the globe.
Yan Zhang
Postdoctoral Fellow
yanz74@uci.edu
Office: 1101C Croul Hall
Postdoctoral Fellow
yanz74@uci.edu
Office: 1101C Croul Hall
Interests: precipitation, spatial statistics, climate change, agriculture

Chris Chalmers
Graduate Student
cmchalme@uci.edu
Office: 3400 ISEB
Interests: remote sensing, agriculture, environmental justice, climate change

Valeria Orozco Saldarriaga
Graduate Student
vorozcos@uci.edu
Office: B002 Croul Hall
Interests: soil moisture, plant available water, community science, climate change
Undergraduate researchers (EarthSS 199):
Current: Annika Lee (senior thesis ongoing)
Previous: Claire Leeb (senior thesis), Jasmine Cordon (senior thesis), London Perkins, Katherine Frields, Sarah Mey (honors thesis), Miles Liu, William Deng, Christopher Leong
Joining our group?
I will likely not be taking any graduate students in Fall 2026.