World's Best Scientists 2026 revealed!
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Earth Science
USA
2026

D-Index & Metrics

Earth Science

D-Index
98
Citations
34960
World Ranking
151
National Ranking
75

Research.com Recognitions

  • 2026 - Research.com Earth Science in United States Leader Award
  • 2025 - Research.com Earth Science in United States Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Agriculture
  • Irrigation
  • Statistics

Jirka Šimůnek mainly investigates Soil water, Water flow, Hydrology, Vadose zone and Soil science. His Soil water research is multidisciplinary, relying on both Environmental chemistry and Porosity. His work investigates the relationship between Hydrology and topics such as Mathematical model that intersect with problems in Hydrological modelling, Flow and Statistical physics.

Jirka Šimůnek interconnects Hydraulic conductivity and Soil horizon in the investigation of issues within Vadose zone. As part of his studies on Soil science, Jirka Šimůnek often connects relevant areas like Geotechnical engineering. His Soil salinity research includes elements of Lysimeter, Nutrient and Drip irrigation, Irrigation.

His most cited work include:

  • Review and comparison of models for describing non-equilibrium and preferential flow and transport in the vadose zone (686 citations)
  • Modeling Nonequilibrium Flow and Transport Processes Using HYDRUS (330 citations)
  • A review of model applications for structured soils: a) Water flow and tracer transport. (251 citations)

What are the main themes of his work throughout his whole career to date?

Jirka Šimůnek spends much of his time researching Soil water, Soil science, Hydrology, Water flow and Leaching. His research integrates issues of Environmental chemistry and Water balance in his study of Soil water. The concepts of his Soil science study are interwoven with issues in Infiltration and Geotechnical engineering.

Throughout his Water flow studies, Jirka Šimůnek incorporates elements of other sciences such as Vadose zone, Water content, Richards equation, Surface runoff and Mechanics. Jirka Šimůnek combines subjects such as Fertilizer, Environmental engineering, Irrigation, Drainage and Nitrate with his study of Leaching. His Irrigation research incorporates themes from Salinity and Soil salinity.

He most often published in these fields:

  • Soil water (42.77%)
  • Soil science (30.64%)
  • Hydrology (29.48%)

What were the highlights of his more recent work (between 2018-2021)?

  • Soil water (42.77%)
  • Soil science (30.64%)
  • Leaching (17.34%)

In recent papers he was focusing on the following fields of study:

His primary areas of investigation include Soil water, Soil science, Leaching, Irrigation and Salinity. His Soil water research includes themes of Water balance, Growing season and Water content. His primary area of study in Soil science is in the field of Hydraulic conductivity.

He integrates several fields in his works, including Leaching and Water flow. Many of his research projects under Irrigation are closely connected to Calcareous with Calcareous, tying the diverse disciplines of science together. His DNS root zone study improves the overall literature in Hydrology.

Between 2018 and 2021, his most popular works were:

  • Infiltration from the Pedon to Global Grid Scales: An Overview and Outlook for Land Surface Modeling (19 citations)
  • Management of soil salinity associated with irrigation of protected crops (16 citations)
  • Assessing salinity leaching efficiency in three soils by the HYDRUS-1D and -2D simulations (10 citations)

In his most recent research, the most cited papers focused on:

  • Agriculture
  • Statistics
  • Irrigation

His scientific interests lie mostly in Soil water, Salinity, Irrigation, Soil science and Water content. Jirka Šimůnek works in the field of Soil water, namely Hydraulic conductivity. His Hydraulic conductivity study incorporates themes from Infiltration, Soil horizon, Biosphere model and Soil structure.

His Salinity study integrates concerns from other disciplines, such as Soil health, Sodium adsorption ratio, Leaching and Pasture. He works mostly in the field of Land use, limiting it down to topics relating to Water balance and, in certain cases, Loam, as a part of the same area of interest. Jirka Šimůnek has researched Growing season in several fields, including Hydrology, DNS root zone, Soil compaction and Vegetation.

Best Publications

  • Development and Applications of the HYDRUS and STANMOD Software Packages and Related Codes

    Jirí Šimůnek;Martinus Th. van Genuchten;Miroslav Šejna

  • Review and comparison of models for describing non-equilibrium and preferential flow and transport in the vadose zone

    Jirka Šimůnek;Nick J. Jarvis;M.Th. van Genuchten;Annemieke Gärdenäs

  • Modeling colloid attachment, straining, and exclusion in saturated porous media.

    Scott A. Bradford;Jirka Simunek;Mehdi Bettahar;Martinus Th. Van Genuchten

  • Physical factors affecting the transport and fate of colloids in saturated porous media

    Scott A. Bradford;Scott R. Yates;Mehdi Bettahar;Jirka Simunek

  • Reactive transport codes for subsurface environmental simulation

    C. I. Steefel;C. A. J. Appelo;B. Arora;D. Jacques

  • Modeling Soil Processes: Review, Key Challenges, and New Perspectives

    H. Vereecken;A. Schnepf;J. W. Hopmans;M. Javaux

  • Modeling Nonequilibrium Flow and Transport Processes Using HYDRUS

    Jirka Šimůnek;Martinus Th. van Genuchten

  • Numerical Analysis of Coupled Water, Vapor, and Heat Transport in the Vadose Zone

    Hirotaka Saito;Jiri Šimůnek;Binayak P. Mohanty

  • Modeling compensated root water and nutrient uptake.

    Jiří Šimůnek;Jan W. Hopmans

  • Water flow and heat transport in frozen soil : Numerical solution and freeze-thaw applications

    Klas Hansson;Jirka Simunek;Masaru Mizoguchi;Lars-Christer Lundin

  • Comparison of HYDRUS-2D simulations of drip irrigation with experimental observations

    T. H. Skaggs;T. J. Trout;J. Simunek;P. J. Shouse

  • Calibration of a two-dimensional root water uptake model

    J. A. Vrugt;J. W. Hopmans;J. Šimunek

  • Two-dimensional modeling of nitrate leaching for various fertigation scenarios under micro-irrigation

    A.I. Gärdenäs;J.W. Hopmans;B.R. Hanson;J. Šimůnek

  • One-, two-, and three-dimensional root water uptake functions for transient modeling

    J. A. Vrugt;M. T. van Wijk;J. W. Hopmans;J. Šimunek

  • A review of model applications for structured soils: a) Water flow and tracer transport.

    John Maximilian Köhne;Sigrid Köhne;Jirka Šimůnek

  • Modeling of Carbon Dioxide Transport and Production in Soil 1. Model Development

    Jiří Šimůnek;Donald L. Suarez

  • Significance of straining in colloid deposition: Evidence and implications

    S. A. Bradford;J. Simunek;M. Bettahar;M. T. van Genuchten

  • HYDRUS: Model Use, Calibration, and Validation

    J. Šimunek;M. Th. van Genuchten;M. Šejna

  • Straining and Attachment of Colloids in Physically Heterogeneous Porous Media

    Scott A. Bradford;Mehdi Bettahar;Jirka Simunek;Martinus Th. van Genuchten

  • Evaluation of urea-ammonium-nitrate fertigation with drip irrigation using numerical modeling

    Blaine R. Hanson;Jirka Šimůnek;Jan W. Hopmans

  • Leaching requirement for soil salinity control: Steady-state versus transient models

    Dennis L. Corwin;James D. Rhoades;Jirka Simunek

Frequent Co-Authors

Harry Vereecken
Harry Vereecken Forschungszentrum Jülich
M. Th. van Genuchten
M. Th. van Genuchten Federal University of Rio de Janeiro
Dirk Mallants
Dirk Mallants Commonwealth Scientific and Industrial Research Organisation
Scott A. Bradford
Scott A. Bradford Agricultural Research Service
Jan Vanderborght
Jan Vanderborght Forschungszentrum Jülich
Jan W. Hopmans
Jan W. Hopmans University of California, Davis
Rafael Angulo-Jaramillo
Rafael Angulo-Jaramillo University of Lyon System
Keith L. Bristow
Keith L. Bristow Commonwealth Scientific and Industrial Research Organisation
Lutz Weihermüller
Lutz Weihermüller Forschungszentrum Jülich

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