World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
40
Citations
5406
World Ranking
8145
National Ranking
2907

Gary A. Bishop 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 Gary A. Bishop 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: 282 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: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 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 681–689 publications: 4 scientists 690+ publications: 100 scientists
41 publications 690+

This scientist: 105 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

Gary A. Bishop 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 Gary A. Bishop 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: 198 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: 20 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: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 40 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

Overview

Gary A. Bishop is affiliated with the University of Denver in the United States and conducts research primarily focused on environmental science, engineering, and earth and planetary sciences. Their work spans several subfields including automotive engineering, health, toxicology and mutagenesis, atmospheric science, environmental engineering, and global and planetary change.

The main topics of their research include vehicle emissions and performance, air quality and health impacts, atmospheric chemistry and aerosols, air quality monitoring and forecasting, climate variability and models, meteorological phenomena and simulations, and energy, environment, and transportation policies.

Gary A. Bishop has contributed to a significant number of publications, frequently appearing in the journal Environmental Science & Technology as well as the Journal of the Air & Waste Management Association and The Science of The Total Environment. Other publication venues include Environments and UNC Libraries.

Notable recent papers authored by Bishop are:

  • Utah Wintertime Measurements of Heavy-Duty Vehicle Nitrogen Oxide Emission Factors (2022, Environmental Science & Technology)
  • Does California's EMFAC2017 vehicle emissions model underpredict California light-duty gasoline vehicle NOx emissions? (2021, Journal of the Air & Waste Management Association)
  • Vehicle Exhaust Remote Sensing Device Method to Screen Vehicles for Evaporative Running Loss Emissions (2020, Environmental Science & Technology)

Gary A. Bishop frequently collaborates with several coauthors, including M. Matti Maricq, Molly J. Haugen, Brian McDonald, Adam Boies, and Timothy H. DeFries. Among these, M. Matti Maricq appears as a common coauthor on multiple occasions.

Best Publications

  • Real-world automotive emissions—Summary of studies in the Fort McHenry and Tuscarora mountain tunnels

    William R. Pierson;Alan W Gertler;Norman F. Robinson;John C. Sagebiel

  • A decade of on-road emissions measurements.

    Gary A. Bishop;Donald H. Stedman

  • Emissions from lit-use Motor Vehicles in Los Angeles: A Pilot Study of Remote Sensing and the Inspection and Maintenance Program

    Douglas R. Lawson;Peter J. Groblicki;Donald H. Stedman;Gary A. Bishop

  • Apparatus for remote analysis of vehicle emissions

    Gary A. Bishop;Donald H. Stedman

  • IR long-path photometry: a remote sensing tool for automobile emissions.

    Gary A. Bishop;John R. Starkey;Anne Ihlenfeldt;Walter J. Williams

  • Measuring the Emissions of Passing Cars

    G.A. Bishop;D.H. Stedman

  • Worldwide On-Road Vehicle Exhaust Emissions Study by Remote Sensing

    Yi. Zhang;Donald H. Stedman;Gary A. Bishop;Paul L. Guenther

  • On-Road Vehicle Emissions: Regulations, Costs, and Benefits

    Stuart P. Beaton;Gary A. Bishop;Yi Zhang;Donald H. Stedman

  • Reactive Nitrogen Species Emission Trends in Three Light-/Medium-Duty United States Fleets

    Gary A. Bishop;Donald H. Stedman

  • On-Road Emission Measurements of Reactive Nitrogen Compounds from Three California Cities

    Gary A Bishop;Allison M Peddle;Donald H Stedman;Tao Zhan

  • Comparison of the MOVES2010a, MOBILE6.2, and EMFAC2007 mobile source emission models with on-road traffic tunnel and remote sensing measurements.

    Eric M. Fujita;David E. Campbell;Barbara Zielinska;Judith C. Chow

  • An on-road motor vehicle emissions inventory for Denver: an efficient alternative to modeling

    Sajal S Pokharel;Gary A Bishop;Donald H Stedman

  • Motor Vehicle Emissions Variability

    Gary A Bishop;Donald H Stedman;Lowell Ashbaugh

  • The effects of altitude on heavy-duty diesel truck on-road emissions.

    Gary A. Bishop;Jerome A. Morris;Donald H. Stedman;Lewis H. Cohen

  • On-road carbon monoxide emission measurement comparisons for the 1988-1989 Colorado oxy-fuels program

    Gary A. Bishop;Donald H. Stedman

  • Development of a High-Speed Ultraviolet Spectrometer for Remote Sensing of Mobile Source Nitric Oxide Emissions.

    Peter J. Popp;Gary A. Bishop;Donald H. Stedman

  • Spectroscopy Applied to On-Road Mobile Source Emissions

    Daniel A. Burgard;Gary A. Bishop;Ryan S. Stadtmuller;Thomas R. Dalton

  • On-road evaluation of an automobile emission test program

    Donald H. Stedman;Gary A. Bishop;Philip Aldrete;Robert S. Slott

  • Multispecies remote sensing measurements of vehicle emissions on Sherman Way in Van Nuys, California

    Gary A. Bishop;Brent G. Schuchmann;Donald H. Stedman;Douglas R. Lawson

  • Heavy-duty truck emissions in the South Coast Air Basin of California.

    Gary A. Bishop;Brent G. Schuchmann;Donald H. Stedman

Frequent Co-Authors

Donald H. Stedman
Donald H. Stedman University of Denver
William R. Pierson
William R. Pierson Desert Research Institute
Judith C. Chow
Judith C. Chow Desert Research Institute
Barbara Zielinska
Barbara Zielinska Desert Research Institute
H. Christopher Frey
H. Christopher Frey North Carolina State University

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Related Online Degrees & Career Pathways

For students interested in Environmental Sciences in the USA, exploring related online degrees can expand career options and deepen expertise. Many find that complementary fields like geology and geographic information systems (GIS) are closely tied to environmental work. For instance, pursuing one of the online geology degrees not only enhances understanding of Earth processes but also provides valuable skills for environmental assessment roles.

Similarly, GIS degree programs are increasingly vital for environmental professionals. These programs teach spatial analysis and mapping technologies used in resource management, urban planning, and conservation efforts.

Those seeking leadership roles or careers in public policy might consider enrolling in one of the top online MPA programs. These degrees prepare students for administrative and management positions within environmental agencies and non-profits.

It’s also helpful to be aware of the what is the easiest bachelor's degree to get resources. While Environmental Sciences may not be the easiest program, choosing degrees that align closely with your strengths can streamline your educational journey and support long-term success.

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