World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
47
Citations
10014
World Ranking
5711
National Ranking
2079

Thomas A. Brown 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 Thomas A. Brown 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: 161 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

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

Thomas A. Brown 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 Thomas A. Brown 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: 47 D-Index — 42nd percentile

42% of scientists in this discipline score the same or lower.

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

Overview

Thomas A. Brown is affiliated with Lawrence Livermore National Laboratory in the United States. Their research spans Earth and Planetary Sciences as well as Environmental Science, with a total of 13 publications in each field. The scientist's subfields of study include Atmospheric Science, Ecology, Global and Planetary Change, Water Science and Technology, and Radiological and Ultrasound Technology.

The research topics covered by Thomas A. Brown are diverse, addressing areas such as Geology and Paleoclimatology Research, Isotope Analysis in Ecology, Radioactive contamination and transfer, Hydrology and Watershed Management Studies, Radioactivity and Radon Measurements, Marine and environmental studies, and Archaeology and ancient environmental studies.

Frequent collaborators in their work include Irene Tunno, Christiane Hassel, John W. Pomeroy, Diogo Costa, and Taylor A. B. Broek. The scientist has contributed to multiple publication venues, notably:

  • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
  • Journal of Hydrology
  • Frontiers in Ecology and Evolution
  • Quaternary International
  • Boreas

Recent publications by Thomas A. Brown illustrate a focus on hydrological modeling, nutrient dynamics, and radiometric dating techniques:

  • The cold regions hydrological modelling platform for hydrological diagnosis and prediction based on process understanding, 2022, Journal of Hydrology
  • Advances in the simulation of nutrient dynamics in cold climate agricultural basins: Developing new nitrogen and phosphorus modules for the Cold Regions Hydrological Modelling Platform, 2021, Journal of Hydrology
  • Conversion of the LLNL/CAMS 1 MV biomedical AMS system to a semi-automated natural abundance 14C spectrometer: system optimization and performance evaluation, 2021, Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
  • An Improved Method for Extracting, Sorting, and AMS Dating of Pollen Concentrates From Lake Sediment, 2021, Frontiers in Ecology and Evolution
  • Late Holocene history of Tokotan Lake (Kuril Archipelago, Russian Far East): The use of lacustrine records for paleoclimatic reconstructions from geologically dynamic settings, 2020, Quaternary International

Best Publications

  • Discussion: Reporting and calibration of post-bomb 14C data

    Paula J Reimer;Paula J Reimer;Thomas A Brown;Ron W Reimer;Ron W Reimer

  • Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers

    Emilio Mayorga;Anthony K. Aufdenkampe;Caroline A. Masiello;Alex V. Krusche

  • Vegetation mediated the impacts of postglacial climate change on fire regimes in the south-central Brooks Range, Alaska

    Philip E. Higuera;Linda B. Brubaker;Patricia M. Anderson;Feng Sheng Hu

  • The isotopic composition of atmospheric methane

    Paul Quay;John Stutsman;David Wilbur;Amy Snover

  • Targeted disruption of the osteoblast/osteocyte factor 45 gene (OF45) results in increased bone formation and bone mass.

    Lori C. Gowen;Donna N. Petersen;Amy L. Mansolf;Hong Qi

  • Cyclic variation and solar forcing of Holocene climate in the Alaskan subarctic.

    Feng Sheng Hu;Darrell Kaufman;Sumiko Yoneji;David Nelson

  • Carbon isotopic composition of atmospheric CH4: Fossil and biomass burning source strengths

    P. D. Quay;S. L. King;J. Stutsman;D. O. Wilbur

  • Frequent Fires in Ancient Shrub Tundra: Implications of Paleorecords for Arctic Environmental Change

    Philip E. Higuera;Linda B. Brubaker;Patricia M. Anderson;Thomas A. Brown

  • EXPORTS OF ORGANIC CARBON IN BRITISH RIVERS

    Diane Hope;Michael F. Billett;Ronnie Milne;Thomas A. W. Brown

  • National inventories of terrestrial carbon sources and sinks : The U.K. experience

    M. G. R. Cannell;R. Milne;K. J. Hargreaves;T. A. W. Brown

  • Source identification of the Arctic sea ice proxy IP25.

    Thomas Adam Brown;Simon T. Belt;Agnieszka Tatarek;Christopher Mundy

  • A reproducible method for the extraction, identification and quantification of the Arctic sea ice proxy IP25 from marine sediments

    Simon T. Belt;Thomas A. Brown;Alba Navarro Rodriguez;Patricia Cabedo Sanz

  • Effects of sample mass and macrofossil type on radiocarbon dating of arctic and boreal lake sediments

    W. Wyatt Oswald;Patricia M. Anderson;Thomas A. Brown;Linda B. Brubaker

  • Pronounced climatic variations in Alaska during the last two millennia.

    Feng Sheng Hu;Emi Ito;Thomas A. Brown;B. Brandon Curry

  • Corrections for contamination background in AMS 14C measurements

    T.A. Brown;J.R. Southon

  • Temporal and vertical variations of lipid biomarkers during a bottom ice diatom bloom in the Canadian Beaufort Sea: further evidence for the use of the IP25 biomarker as a proxy for spring Arctic sea ice

    Thomas A. Brown;Simon T. Belt;Benoît Philippe;Christopher J. Mundy

  • Mapping the regional extent of tropical forest regeneration stages in the Brazilian Legal Amazon using NOAA AVHRR data.

    R. M. Lucas;M. Honzák;P. J. Curran;G. M. Foody

  • Investigations of Δ14C, δ13C, and δ15N in vertebrae of white shark (Carcharodon carcharias) from the eastern North Pacific Ocean

    Lisa A. Kerr;Allen H. Andrews;Gregor M. Cailliet;Thomas A. Brown

  • Late Quaternary paleoenvironments and modern pollen data from Wrangel Island (Northern Chukotka)

    A.V. Lozhkin;P.M. Anderson;S.L. Vartanyan;T.A. Brown

  • Holocene changes in the ecology of northern fur seals: insights from stable isotopes and archaeofauna.

    Robert K. Burton;Josh J. Snodgrass;Diane Gifford-Gonzalez;Tom Guilderson

Frequent Co-Authors

Patricia M. Anderson
Patricia M. Anderson University of Washington
Thomas P. Guilderson
Thomas P. Guilderson University of California, Santa Cruz
Gregor M. Cailliet
Gregor M. Cailliet Moss Landing Marine Laboratories
Feng Sheng Hu
Feng Sheng Hu University of Illinois at Urbana-Champaign
Kenneth H. Coale
Kenneth H. Coale Moss Landing Marine Laboratories
Dylan H. Rood
Dylan H. Rood Imperial College London
Linda B. Brubaker
Linda B. Brubaker University of Washington
Pieter Meiert Grootes
Pieter Meiert Grootes Kiel University
Paul D. Quay
Paul D. Quay University of Washington
Darrell S. Kaufman
Darrell S. Kaufman Northern Arizona University

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