Associate Professor
mgirotto@berkeley.edu
My research integrates cutting-edge space technology and remotely-sensed observations of the earth with models for the purpose of improving our scientific knowledge about variability and change in hydrologic cycles. In particular, I focus on snow, and groundwater hydrology. After earning my PhD in civil and environmental engineering at the University of California, Los Angeles, I have worked as a research scientist in the earth science division of the NASA Goddard Space Flight Center in Greenbelt, MD.
Ph.D. Student
chloe_faehndrich@berkeley.edu
I am passionate about developing better ways to predict and manage changes in water resources in the face of both human and climate-driven pressures. My Ph.D. research examines how beaver restoration in California’s Sierra Nevada affects water storage and river flow regimes across different beaver densities and climate scenarios. Using hydrologic modeling and remote sensing, I aim to capture the impacts of beaver dams at both local and regional scales. Ultimately, my goal is to translate these insights into actionable knowledge that supports restoration efforts and strengthens California’s water security, both now and for the future.
Before beginning my Ph.D. at Berkeley, I earned a bachelor’s degree in Environmental Science and Spanish from Skidmore College and conducted research on water resources with Cornell University, Oak Ridge National Laboratory, and the U.S. Geological Survey. [Co-advised by Albert Ruhi]
Ph.D. student
sdesousa@berkeley.edu
I’m interested in large-scale hydrologic and climate questions. I'm currently studying how snow in the Sierra Nevada takes part in recharging the Central Valley aquifers. I am using remote sensing data sets, computational models, and statistical analysis.
Before coming to UC Berkeley, I had a diverse background that has included work as a civil engineer with the Bureau of Reclamation in New Mexico and a mountain guide in Colorado.
Postdoctoral Researcher
scasirati@berkeley.edu
My research lies at the intersection of ecohydrology, computational hydrology, and Earth system modeling. I investigate how land-use change and human activities, particularly irrigation, shape hydrologic processes and land–atmosphere interactions across spatial and temporal scales. By combining statistical and geospatial analyses with process-based models and diverse data sources, including field observations and remote sensing, I explore the feedback linking vegetation dynamics, water fluxes, and climate variability. Before joining UC Berkeley, I earned my Ph.D. in Environmental Systems at UC Merced, where I examined how climate stressors and forest treatments influence mountain hydrology and forest ecosystems.
Senior Undergraduate Student sarahryu@berkeley.edu
Thomas Pulka (PhD Visiting Student), ESPM UC Berkeley (April. 2025 – Oct. 2025)
Marianne Cowherd (PhD Student), ESPM UC Berkeley (Aug. 2020 – May. 2025), now Assistant Professor at Montana State University
Sophie Ruehr (PhD Student, co-advised with Trevor Keenan), ESPM UC Berkeley (Aug. 2020 – May 2025), now Research Scientist at Carnegie Institution for Science
Grace Carlson (PostDoc), ESPM UC Berkeley (Feb. 2023 - Jul. 2025), now Assistant Professor at Indiana University
Marco Mazzolini (PhD Visiting Student), ESPM UC Berkeley & University of Oslo (Nov. 2024 - Dec. 2024)
Leire Anne Retegui Schiettekatte (PhD Visiting Student), ESPM UC Berkeley & Aalborg University (Aug. 2024 - Dec. 2024)
Fatemeh Zakeri (PhD Visiting Student), ESPM UC Berkeley & University of Lausanne (Oct. 2023 - Apr. 2024)
Tasnuva Rouf (PostDoc), ESPM UC Berkeley (Jun. 2020 – Apr. 2022), now Research Scientist at NOAA, College Park Maryland)
Elias Massoud (PostDoc), ESPM UC Berkeley (Apr. 2021 – Jul. 2022), now at Oak Ridge National Laboratory, Oak Ridge, Tennessee)
Ann Scheliga (PhD Student), CEE UC Berkeley (Aug. 2020 – Aug. 2023)