World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
80
Citations
22438
World Ranking
536
National Ranking
273

Jan W. Hopmans publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Jan W. Hopmans sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

This scientist: 264 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 510 publications or more.

Jan W. Hopmans D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Jan W. Hopmans sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

This scientist: 80 D-Index — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 94 D-Index or more.

Research.com Recognitions

  • 2015 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 2005 - Fellow of American Geophysical Union (AGU)
  • 2003 - Don and Betty Kirkham Soil Physics Award, American Society of Agronomy
  • 1999 - Fellow of the Soil Science Society of America (SSSA)

Overview

Jan W. Hopmans is affiliated with the University of California, Davis in the United States. Their research focuses broadly on environmental science, agricultural and biological sciences, and engineering, with a significant emphasis on several interdisciplinary subfields. These subfields include civil and structural engineering, environmental engineering, soil science, plant science, and water science and technology.

The primary research topics covered by Jan W. Hopmans include soil and unsaturated flow, soil moisture and remote sensing, soil carbon and nitrogen dynamics, hydrology and watershed management studies, groundwater flow and contamination studies, rice cultivation and yield improvement, and soil erosion and sediment transport.

Jan W. Hopmans has contributed to multiple research publications. Key recent papers include:

  • "Long-term impact of cover crop and reduced disturbance tillage on soil pore size distribution and soil water storage" (2022, SOIL)
  • "Assessing Effects of Salinity on the Performance of a Low-Cost Wireless Soil Water Sensor" (2020, Sensors)
  • "Transdisciplinary soil hydrology" (2020, Vadose Zone Journal)
  • "The time validity of Philip's two-term infiltration equation: An elusive theoretical quantity?" (2024, Vadose Zone Journal)
  • "Design and characterization of a pneumatic micro glass beads matrix sensor for soil water potential threshold control in irrigation management" (2022, Irrigation Science)

Frequent coauthors in Jan W. Hopmans's work include:

  • Isaya Kisekka
  • Asad Sarwar Qureshi
  • Rana Munns
  • S.R. Grattan
  • Pichu Rengasamy

Their research is published notably in venues such as Vadose Zone Journal, SOIL, Sensors, Irrigation Science, and Acta Horticulturae.

Jan W. Hopmans has been recognized with several awards over their career, including the Don and Betty Kirkham Soil Physics Award from the American Society of Agronomy in 2003. They are a Fellow of the American Association for the Advancement of Science (AAAS) since 2015, a Fellow of the American Geophysical Union (AGU) since 2005, and a Fellow of the Soil Science Society of America (SSSA) since 1999.

Best Publications

  • Soil and human security in the 21st century

    Ronald Amundson;Asmeret Asefaw Berhe;Jan W. Hopmans;Carolyn Olson

  • Soil Moisture Measurement for Ecological and Hydrological Watershed-Scale Observatories: A Review

    D. A. Robinson;C. S. Campbell;J. W. Hopmans;B. K. Hornbuckle

  • On the value of soil moisture measurements in vadose zone hydrology: a review

    H. Vereecken;J. A. Huisman;H. Bogena;J. Vanderborght

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

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

  • Modeling compensated root water and nutrient uptake.

    Jiří Šimůnek;Jan W. Hopmans

  • Determining soil carbon stock changes: Simple bulk density corrections fail

    Juhwan Lee;Jan W. Hopmans;Dennis E. Rolston;Sara G. Baer

  • Frequency, electrical conductivity and temperature analysis of a low-cost capacitance soil moisture sensor

    F. Kizito;C.S. Campbell;G.S. Campbell;D.R. Cobos

  • Critical knowledge gaps and research priorities in global soil salinity

    Jan W. Hopmans;A.S. Qureshi;I. Kisekka;R. Munns;R. Munns

  • 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

  • Software to model soil water retention curves (SWRC, version 2.00)

    Durval Dourado-Neto;Donald R. Nielsen;Jan W. Hopmans;Klaus Reichardt

  • Sustainability of irrigated agriculture in the San Joaquin Valley, California

    Gerrit Schoups;Jan W. Hopmans;Chuck A. Young;Jasper A. Vrugt

  • Simultaneous modeling of transient three-dimensional root growth and soil water flow

    V. Clausnitzer;J. W. Hopmans

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

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

  • Climate-smart agriculture global research agenda: scientific basis for action

    Kerri L Steenwerth;Amanda K Hodson;Arnold J Bloom;Michael R Carter

  • Current Capabilities and Future Needs of Root Water and Nutrient Uptake Modeling

    Jan W. Hopmans;Keith L. Bristow

  • Evaluation of soil salinity leaching requirement guidelines

    John Letey;Glenn J. Hoffman;Jan W. Hopmans;Stephen R. Grattan

  • Soil Moisture Response to Snowmelt and Rainfall in a Sierra Nevada Mixed-Conifer Forest

    Roger C. Bales;Jan W. Hopmans;Anthony T. O'Geen;Matthew Meadows

  • Transient three-dimensional modeling of soil water and solute transport with simultaneous root growth, root water and nutrient uptake

    F. Somma;J.W. Hopmans;V. Clausnitzer

  • Optimization of Hydraulic Functions from Transient Outflow and Soil Water Pressure Data

    S. O. Eching;J. W. Hopmans

Frequent Co-Authors

Jasper A. Vrugt
Jasper A. Vrugt University of California, Irvine
Roger C. Bales
Roger C. Bales University of California, Merced
Wesley W. Wallender
Wesley W. Wallender University of California, Davis
Thomas Harter
Thomas Harter University of California, Davis
Dennis E. Rolston
Dennis E. Rolston University of California, Davis
Johan Six
Johan Six ETH Zurich
Keith L. Bristow
Keith L. Bristow Commonwealth Scientific and Industrial Research Organisation
Harry Vereecken
Harry Vereecken Forschungszentrum Jülich
Jan Vanderborght
Jan Vanderborght Forschungszentrum Jülich
Jirka Šimůnek
Jirka Šimůnek University of California, Riverside

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