He received an M.S. in Civil Engineering from the Czech Technical University, Prague, Czech Republic, and a Ph.D. in Water Management from the Czech Academy of Sciences, Prague. His expertise is in numerical modeling of subsurface water flow and solute transport processes, equilibrium and nonequilibrium chemical transport, multicomponent major ion chemistry, field-scale spatial variability, and inverse procedures for estimating the hydraulic properties of unsaturated porous media. He has authored and coauthored numerous peer-reviewed publications and book chapters, and several books. His numeric models are popularly used by many scientists, students, and practitioners modeling water flow, chemical movement, and heat transport through variably saturated soils and groundwater. Dr. Simunek is a recipient of the Soil Science Society of America’s Don and Betty Kirkham Soil Physics Award, is a Fellow of both SSSA and AGU, and is or was an associate editor of several journals including Vadose Zone Hydrology, the Journal of Hydrology, and Water Resources Research.