World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
95
Citations
35015
World Ranking
475
National Ranking
216

Dar A. Roberts 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 Dar A. Roberts 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: 456 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

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

Dar A. Roberts 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 Dar A. Roberts 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: 95 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2016 - Fellow of American Geophysical Union (AGU)

Overview

Dar A. Roberts is affiliated with the University of California, Santa Barbara in the United States. Their research primarily focuses on environmental science, with significant contributions to global and planetary change, ecology, environmental engineering, atmospheric science, and media technology.

The scientist's work covers a spectrum of topics related to environmental science. Key research areas include:

  • Remote Sensing in Agriculture
  • Fire effects on ecosystems
  • Plant Water Relations and Carbon Dynamics
  • Land Use and Ecosystem Services
  • Tree-ring climate responses
  • Urban Heat Island Mitigation
  • Remote-Sensing Image Classification

Roberts has published extensively in various scholarly venues. The most frequent publication outlets for their work are:

  • Remote Sensing
  • Remote Sensing of Environment
  • Proceedings of the National Academy of Sciences
  • Urban Climate
  • International Journal of Applied Earth Observation and Geoinformation

Collaborations form an important part of Roberts's research activities. Frequent co-authors include:

  • Michael Bliss Singer
  • John C. Stella
  • K. K. Caylor
  • Charles Jones
  • J. P. McFadden

Recent publications by Dar A. Roberts illustrate their engagement with advancing remote sensing and environmental monitoring techniques. Notable papers include:

  • "Groundwater-dependent ecosystem map exposes global dryland protection needs," 2024, Nature
  • "Attribution of individual methane and carbon dioxide emission sources using EMIT observations from space," 2023, Science Advances
  • "No evidence of canopy-scale leaf thermoregulation to cool leaves below air temperature across a range of forest ecosystems," 2022, Proceedings of the National Academy of Sciences
  • "NASA's surface biology and geology designated observable: A perspective on surface imaging algorithms," 2021, Remote Sensing of Environment
  • "Open water detection in urban environments using high spatial resolution remote sensing imagery," 2020, Remote Sensing of Environment

In recognition of their contributions to geophysical research, Roberts was awarded the title of Fellow of the American Geophysical Union (AGU) in 2016.

Best Publications

  • Mapping Chaparral in the Santa Monica Mountains Using Multiple Endmember Spectral Mixture Models

    D.A. Roberts;M. Gardner;R. Church;S. Ustin

  • Edge Influence on Forest Structure and Composition in Fragmented Landscapes

    Karen A. Harper;S. Ellen Macdonald;Philip J. Burton;Jiquan Chen

  • Hyperspectral discrimination of tropical rain forest tree species at leaf to crown scales

    Matthew L. Clark;Dar A. Roberts;David B. Clark

  • Using Imaging Spectroscopy to Study Ecosystem Processes and Properties

    Susan L. Ustin;Dar A. Roberts;John A. Gamon;Gregory P. Asner

  • Green vegetation, nonphotosynthetic vegetation, and soils in AVIRIS data

    D.A. Roberts;M.O. Smith;J.B. Adams

  • A comparison of methods for monitoring multitemporal vegetation change using Thematic Mapper imagery

    John Rogan;Janet Franklin;Dar A Roberts

  • State of the art satellite and airborne marine oil spill remote sensing: Application to the BP Deepwater Horizon oil spill

    Ira Leifer;William J. Lehr;Debra Simecek-Beatty;Eliza Bradley

  • Census from Heaven: An estimate of the global human population using night-time satellite imagery

    P. Sutton;D. Roberts;C. Elvidge;K. Baugh

  • Urban tree species mapping using hyperspectral and lidar data fusion

    Michael Alonzo;Bodo Bookhagen;Dar A. Roberts

  • Sub-pixel mapping of urban land cover using multiple endmember spectral mixture analysis: Manaus, Brazil

    Rebecca L. Powell;Dar A. Roberts;Philip E. Dennison;Laura L. Hess

  • Endmember selection for multiple endmember spectral mixture analysis using endmember average RMSE

    Philip E. Dennison;Dar A. Roberts

  • Spectrometry for urban area remote sensing—Development and analysis of a spectral library from 350 to 2400 nm

    Martin Herold;Dar A Roberts;Margaret E Gardner;Philip E Dennison

  • Practical limits on hyperspectral vegetation discrimination in arid and semiarid environments

    Gregory S Okin;Dar A Roberts;Bruce Murray;William J Okin

  • Combining spectral and spatial information to map canopy damage from selective logging and forest fires

    Carlos M. Souza;Dar A. Roberts;Mark A. Cochrane

  • Small-footprint lidar estimation of sub-canopy elevation and tree height in a tropical rain forest landscape

    Matthew L. Clark;David B. Clark;Dar A. Roberts

  • Retrieval of subpixel snow-covered area and grain size from imaging spectrometer data

    Thomas H. Painter;Jeff Dozier;Dar A. Roberts;Robert E. Davis

  • Spectral resolution requirements for mapping urban areas

    M. Herold;M.E. Gardner;D.A. Roberts

  • A comparison of error metrics and constraints for multiple endmember spectral mixture analysis and spectral angle mapper

    Philip E. Dennison;Kerry Q. Halligan;Dar A. Roberts

  • Mapping forest degradation in the Eastern Amazon from SPOT 4 through spectral mixture models

    Carlos Souza;Laurel Firestone;Luciano Moreira Silva;Dar Roberts

  • The ECOSTRESS spectral library version 1.0

    Susan K. Meerdink;Simon J. Hook;Dar A. Roberts;Elsa A. Abbott

  • A Comparison of Nighttime Satellite Imagery and Population Density for the Continental United States

    Paul Sutton;Dar Roberts;Chris Elvidge;Henk Melj

Frequent Co-Authors

Philip E. Dennison
Philip E. Dennison University of Utah
Susan L. Ustin
Susan L. Ustin University of California, Davis
Robert O. Green
Robert O. Green California Institute of Technology
Oliver A. Chadwick
Oliver A. Chadwick University of California, Santa Barbara
Glynn C. Hulley
Glynn C. Hulley California Institute of Technology
John A. Gamon
John A. Gamon University of Nebraska–Lincoln
Jeff Dozier
Jeff Dozier University of California, Santa Barbara
Christopher J. Still
Christopher J. Still Oregon State University
John B. Adams
John B. Adams University of Washington
Ira Leifer
Ira Leifer University of California, Santa Barbara

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Related Online Degrees & Career Pathways

For those interested in expanding their knowledge beyond Environmental Sciences, there are several related online degrees that can complement or enhance career prospects. Many students seek affordable options, and programs highlighted in the cheapest online general studies degree programs provide flexible and budget-friendly paths to further education.

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Moreover, Geographic Information Systems (GIS) play a vital role in many environmental careers. Those interested in spatial analysis and mapping should consider colleges with GIS programs, as highlighted in this guide to the colleges with gis programs. These degrees open doors to dynamic roles in urban planning, conservation, and data analysis.

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