World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
45
Citations
8615
World Ranking
6357
National Ranking
2292

Ronald J. Thomas publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Ronald J. Thomas sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 164 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Ronald J. Thomas D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Ronald J. Thomas sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 45 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Ronald J. Thomas is affiliated with the New Mexico Institute of Mining and Technology in the United States. Their research spans multiple fields including Medicine and Physics and Astronomy, with a notable focus on specialized subfields such as Astronomy and Astrophysics, Global and Planetary Change, Radiology, Nuclear Medicine and Imaging, Plant Science, and Electrical and Electronic Engineering.

Their scientific contributions emphasize topics such as Lightning and Electromagnetic Phenomena, Fire Effects on Ecosystems, Electrical Fault Detection and Protection, Medical Imaging Techniques and Applications, Advanced MRI Techniques and Applications, Advanced Neuroimaging Techniques and Applications, and Astrophysics and Cosmic Phenomena.

Ronald J. Thomas has published extensively in several venues, with frequent publications appearing in the Journal of the Meteorological Society of Japan Ser II, JAMA, Geophysical Research Letters, Nature, and Alzheimer's & Dementia.

Recent published papers include the following:

  • Impulsive Volcanic Plumes Generate Volcanic Lightning and Vent Discharges: A Statistical Analysis of Sakurajima Volcano in 2015, 2021, Geophysical Research Letters
  • Highly dynamic gamma-ray emissions are common in tropical thunderclouds, 2024, Nature
  • Frequency and Clinical Outcomes Associated With Tau Positron Emission Tomography Positivity, 2025, JAMA
  • Topline Results of EXERT: Can Exercise Slow Cognitive Decline in MCI?, 2022, Alzheimer's & Dementia
  • Observations Show Charge Density of Volcanic Plumes is Higher Than Thunderstorms, 2021, Journal of Geophysical Research Atmospheres

Frequent collaborators in their work include:

  • P. R. Krehbiel
  • Sonja A. Behnke
  • H. E. Edens
  • M. Marisaldi
  • Nikolai Østgaard

Best Publications

  • A GPS‐based three‐dimensional lightning mapping system: Initial observations in central New Mexico

    W. Rison;R. J. Thomas;P. R. Krehbiel;T. Hamlin

  • Accuracy of the Lightning Mapping Array

    Ronald J. Thomas;Paul R. Krehbiel;William Rison;Steven J. Hunyady

  • Radio interferometric observations of cloud-to-ground lightning phenomena in Florida

    X. M. Shao;P. R. Krehbiel;R. J. Thomas;W. Rison

  • A distinct class of isolated intracloud lightning discharges and their associated radio emissions

    D. A. Smith;X. M. Shao;D. N. Holden;C. T. Rhodes

  • The Severe Thunderstorm Electrification and Precipitation Study

    Timothy J. Lang;L. Jay Miller;Morris Weisman;Steven A. Rutledge

  • Upward electrical discharges from thunderstorms

    Paul R. Krehbiel;Jeremy A. Riousset;Victor P. Pasko;Ronald J. Thomas

  • Observations of VHF Source Powers Radiated by Lightning

    R. J. Thomas;P. R. Krehbiel;W. Rison;T. Hamlin

  • Observations of narrow bipolar events reveal how lightning is initiated in thunderstorms.

    William Rison;Paul R. Krehbiel;Michael G. Stock;Michael G. Stock;Harald E. Edens

  • Inverted-polarity electrical structures in thunderstorms in the Severe Thunderstorm Electrification and Precipitation Study (STEPS)

    W. David Rust;Donald R. MacGorman;Eric C. Bruning;Stephanie A. Weiss

  • Effects of charge and electrostatic potential on lightning propagation

    L. M. Coleman;T. C. Marshall;M. Stolzenburg;T. Hamlin

  • GPS‐based mapping system reveals lightning inside storms

    Paul R. Krehbiel;Ronald J. Thomas;William Rison;Timothy Hamlin

  • Observations of lightning phenomena using radio interferometry

    C. T. Rhodes;X. M. Shao;P. R. Krehbiel;R. J. Thomas

  • Observed electric fields associated with lightning initiation

    T. C. Marshall;M. Stolzenburg;C. R. Maggio;L. M. Coleman

  • The Unexpected Awakening of Chaitén Volcano, Chile

    Simon A. Carn;John S. Pallister;Luis Lara;John W. Ewert

  • Solar Mesosphere Explorer Near-Infrared Spectrometer: Measurements of 1.27-μm radiances and the inference of mesospheric ozone

    Ronald J. Thomas;Charles A. Barth;David W. Rusch;Ryan W. Sanders

  • Comparison of ground‐based 3‐dimensional lightning mapping observations with satellite‐based LIS observations in Oklahoma

    Ronald J. Thomas;Paul R. Krehbiel;William Rison;Timothy Hamlin

  • Distribution of atomic oxygen in the upper atmosphere deduced from Ogo 6 airglow observations

    T. M. Donahue;B. Guenther;Ronald J. Thomas

  • Three‐dimensional fractal modeling of intracloud lightning discharge in a New Mexico thunderstorm and comparison with lightning mapping observations

    Jeremy A. Riousset;Victor P. Pasko;Paul R. Krehbiel;Ronald J. Thomas

  • Atomic hydrogen and atomic oxygen density in the mesopause region: Global and seasonal variations deduced from Solar Mesosphere Explorer near-infrared emissions

    Ronald J. Thomas

  • Mesospheric ozone depletion during the Solar Proton Event of July 13, 1982 Part II. Comparison between theory and measurements

    S. Solomon;G. C. Reid;D. W. Rusch;R. J. Thomas

  • Comparison of Ground-Based 3-Dimensional Lightning Mapping Observations with Satellite-Based LIS Observations in Oklahoma: Comparison of LMS and LIS Lightning Mapping

    Ronald J. Thomas;Paul R. Krehbiel;William Rison;Timothy Hamlin

Frequent Co-Authors

Paul R. Krehbiel
Paul R. Krehbiel New Mexico Institute of Mining and Technology
William Rison
William Rison New Mexico Institute of Mining and Technology
Stephen R. McNutt
Stephen R. McNutt University of South Florida
David W. Rusch
David W. Rusch University of Colorado Boulder
Charles A. Barth
Charles A. Barth University of Colorado Boulder
Thomas C. Marshall
Thomas C. Marshall University of Mississippi
Gary E. Thomas
Gary E. Thomas University of Colorado Boulder
Maribeth Stolzenburg
Maribeth Stolzenburg University of Mississippi
Gary J. Rottman
Gary J. Rottman University of Colorado Boulder
Donald R. MacGorman
Donald R. MacGorman University of Oklahoma

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