Seminars By Semester

Spring 2026

	Host Spring 2026: C. Larry Winter	winter@arizona.edu
1/14	Marcel Schaap, UA Environmental Science	Title to be announced
1/19	Holiday	Martin Luther King, Jr. (U.S. observed) - no classes and department offices closed
1/21	Parade of Stars, Part 1	Faculty introductions to research and teaching in HAS
1/28	Steven P. Loheide, II, University of Wisconsin-Madison	2026 Darcy Lecture: Groundwater recharge regimes are in flux
2/4	Parade of Stars, Part 2	Faculty introductions to research and teaching in HAS
2/11
2/18
2/25
3/4
3/7-15	Recess	Spring Break - no classes for students - all departmental offices remain open
3/18
3/24	Symposium	El Dia del Agua y la Atmosfera - Student Research Symposium
4/1
4/8
4/15
4/22
4/29
5/5	Last day of classes

Fall 2025

	Host Fall 2025: C. Larry Winter	winter@arizona.edu
9/24	Thomas C. Adang, PhD, Colonel, USAF (Retired) (HAS Alumnus)	Wildcat for Life--Paying It Forward
10/8	Suqin Duan, UCLA	Coherent patterns of land hydroclimate change, heatwaveheatwaves, and precipitation extremes
10/15	Hsin I Chang, HAS Department	Historic and future extreme climate assessments over the contiguous U.S. and Mexico and applications for risk management
10/20	Rainer Helmig, Stutgartt University	SPECIAL DAY (MONDAY) - 2025 Kimberly-Clark Distinguished Lecturer, Professor Rainer Helmig, Stutgartt University, sponsored by the International Society for Porous Media (InterPore): Porous media and free-flow coupling - From REV to pore scale and back
10/29	Anne Ojeda, Auburn University	Rural water security: Private well systems, community engagement, and public health
11/5	Anping Chen, Colorado State University	Ecosys te m responses to drought: Are there unified patterns?
11/12	Michael Brunke, HAS Department	How well do Earth system models simulate cloudy boundary layers?
11/19	Lourdes Fierro, HAS Department	Hydrometeorological extremes and open science: A computational framework for resilience
12/3	Alan Robock, Rutgers	AGU College of Fellows Distinguished Lecture Series: Global famine after nuclear war

Spring 2025

	Host Spring 2025: Andrew Bennett	andrbenn@arizona.edu
1/29	Jim Yeh, UA HAS Professor	Stochastic information fusion: the future hydrogeologic sciences
2/5	Grant Ferguson, 2025 Darcy Lecturer	Living fossils: Ancient groundwaters in the Anthropocene
2/12	Kevin Anchukaitis, UA SGDE+LTRR	Reconstructing Pacific atmospheric circulation using paleoclimate data assimilation
2/19	Fuhar Dixit, University of California Berkeley	Exploring novel methods of solving the world's remediation problems
2/26	Bryn Stewart, California Institute of Technology (Caltech)	Streams as Mirrors: Using Critical Zone science to understand hydro-biogeochemical processes and stream water quality
3/5	Caitlyn Hall, University of Arizona	Advancing climate resilience through community driven water and disaster science
3/7	Chaopeng Shen, Pennsylvania State University	State-of-the-Art AI & Physics-Informed ML in Hydrology and beyond: Insights and Synergies
3/19	Spring Break*
3/25	El Dia del Agua y la Atmosfera, Annual Student Research Symposium	2025 Theme: Research to Resilience
3/26	Akif Sarikaya, Istanbul Technical University (HAS Alumnus)	Hydroclimatological controls on long-term carbonate denudation in Mediterranean mountains
4/2	Andrew Bennett, HAS Assistant Professor, Facilitating Discussion	2025 El Dia World Cafe Recap: The Conversation Continues
4/9	Walker Lee, NCAR	Climate intervention: the risks, benefits, uncertainties, and ethics of cooling the planet with aerosols
4/16	C.L. Winter, HAS Professor	Projecting hidden state dynamics of annual streamflow in the Colorado river basin forward
4/30	Aniket Gupta, HAS Postdoctoral Researcher	Understanding the role and representation of Critical-Zone processes in hydrological and land-surface models
5/7	Andrew Bennett, HAS Assistant Professor, Moderator	End of semester reflection and discussion of future colloquium activities
University of Arizona 2025 Spring Break March 8 through March 16*

Fall 2024

9/18	Laura Condon, UA HAS Associate Professor	Exploring the role of groundwater in the terrestrial water cycle
10/2	Jonathan Frame, University of Alabama	Beyond catchment boundaries: extending geospatial context for large-domain hydrological prediction
10/9	Ellis Robinson, UA Chemical and Environmental Engineering	Mapping air pollutants and high spatial resolution: community exposure assessment using mobile monitoring and fast, in situ instrumentation
10/16	Jonathan Sullivan, UA Geography, Development, and Environment	Using satellite-observed inundation to investigate health disparities in the aftermath of floods
10/23	Hoshin Gupta, UA HAS Regents Professor	On machine learning "interpretable" and "generalizable" representations of dynamical geoscientific systems
10/30	Kau Thirumalai, UA Geosciences	Future increase in extreme El Niňo supported by past glacial changes
11/6	Kathy Jacobs and Neha Gupta, UA Arizona Institute for Resilience (NG, HAS Alumnus)	Arizona tri-university recharge and water supply reliability project: An update
11/13	Yuan-Heng Wang, Lawrence Berkeley National Laboratory (HAS Alumnus)	ML-enabled physically-interpretable modeling of catchment-scale precipitation-runoff dynamics using the mass-conserving-perceptron
11/20	Clark Evans, NOAA GSC	Real-time, high-resolution hurricane prediction with the model for prediction across scales
12/4	Casey Davenport, University of North Carolina-Charlotte	The evolution of supercell thunderstorms and student understanding as a response to their environment

Spring 2024

1/17	Yifan Cheng, National Center for Atmospheric Research	Towards more actionable hydrologic modeling in Alaska and Yukon River Basin
1/24	Joao Teixeira, Jet Propulsion Laboratory	Turbulence, clouds and climate Models
1/31	Matt Becker, 2024 Darcy Lecturer	Fiber optic distributed sensing as a window on subsurface flow
2/7	Marek Zreda, UA Professor, Hydrology and Atmospheric Sciences	Measuring stream discharge using audible sound
2/14	Tyler Robinson, UA Associate Professor, Lunar and Planetary Laboratory	Connecting Earth to exo-Earths: Promises and challenges for Earth-like exoplanets
2/21	Clara Deser, Senior Scientist, National Center for Atmospheric Research	Projected changes in atmospheric circulation and precipitation variability over the North Pacific and North America in a coupled model large ensemble
2/28	Peter Carter, MD, Director, Climate Emergency Institute	Can we better communicate (and mitigate) the climate emergency?
3/13	Addisu Semie, Ph.D., Addis Ababa University	Influence of the organization of deep convection on the radiation budget and precipitation extremes in the tropics
3/20	Riley Nolan and Jesse Jankowski, State of California Water Resources	California Water Rights Overview and 2021-2023 drought response in the Sacramento-San Joaquin Valley delta watershed
4/3	Xiaonan Tai, Assistant Professor, New Jersey Institute of Technology	Influence of groundwater on forest mortality, resilience, and management
4/10	Zhen Li, Postdoctoral Researcher, Lawrence Livermore National Laboratory	A framework for integrating genomics, microbial traits, and ecosystem biogeochemistry
4/17	Erica DiFilippo, S.S. Papadopulos & Associates, Inc. (HAS Alumnus)	Polymer based PFAS as long-term source to surface water in the Alabama River System
4/24	Mary Barth, Senior Scientist Section Head, National Center for Atmospheric Research	Vertical transport of aerosols and trace gases in deep convection
5/1	Bo Guo, UA Assistant Professor, Hydrology and Atmospheric Sciences	Fate and transport of PFAS in soils: controlling processes, mathematical formulation, and practical modeling approaches