World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
62
Citations
11251
World Ranking
2664
National Ranking
1067

James Walega 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 James Walega 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: 186 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

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

James Walega 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 James Walega 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: 62 D-Index — 74th percentile

74% of scientists in this discipline score the same or lower.

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

Overview

James Walega is affiliated with the Institute of Arctic and Alpine Research in the United States. Their research primarily focuses on atmospheric sciences and environmental studies concerning air quality, atmospheric chemistry, and climate-related topics.

The scientist has contributed extensively to the fields of Earth and Planetary Sciences as well as Environmental Science. Their work involves major subfields including Atmospheric Science, Global and Planetary Change, Health, Toxicology and Mutagenesis, Environmental Engineering, and Automotive Engineering.

Key topics covered in their research include:

  • Atmospheric chemistry and aerosols
  • Atmospheric Ozone and Climate
  • Air Quality and Health Impacts
  • Atmospheric and Environmental Gas Dynamics
  • Atmospheric aerosols and clouds
  • Air Quality Monitoring and Forecasting
  • Vehicle emissions and performance

Among their recent scholarly publications are:

  • Ozone chemistry in western U.S. wildfire plumes, 2021, Science Advances
  • Secondary organic aerosols from anthropogenic volatile organic compounds contribute substantially to air pollution mortality, 2021, Atmospheric chemistry and physics
  • Observation-based modeling of ozone chemistry in the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ), 2020, Elementa Science of the Anthropocene
  • Top-down estimates of anthropogenic VOC emissions in South Korea using formaldehyde vertical column densities from aircraft during the KORUS-AQ campaign, 2021, Elementa Science of the Anthropocene
  • Airborne formaldehyde and volatile organic compound measurements over the Daesan petrochemical complex on Korea's northwest coast during the Korea-United States Air Quality study, 2020, Elementa Science of the Anthropocene

The scientist frequently publishes in the following venues:

  • Journal of Geophysical Research Atmospheres
  • Atmospheric chemistry and physics
  • Elementa Science of the Anthropocene
  • Science Advances
  • Atmospheric Environment

Frequent collaborators in their research work include Alan Fried, Dirk Richter, P. Weibring, Glenn S. Diskin, and D. R. Blake. These partnerships highlight active participation in multidisciplinary atmospheric science research.

Best Publications

  • Chemical mechanisms of acid generation in the troposphere

    Jack G. Calvert;Allan Lazrus;Gregory L. Kok;Brian G. Heikes

  • Emissions from biomass burning in the Yucatan

    R. J. Yokelson;J. D. Crounse;P. F. DeCarlo;P. F. DeCarlo;T. Karl

  • Partitioning and budget of NO y species during the Mauna Loa Observatory Photochemistry Experiment

    E. L. Atlas;B. A. Ridley;G. Hubler;J. G. Walega

  • Organic aerosol formation in urban and industrial plumes near Houston and Dallas, Texas

    R. Bahreini;R. Bahreini;B. Ervens;B. Ervens;A. M. Middlebrook;C. Warneke;C. Warneke

  • Analysis of the atmospheric distribution, sources, and sinks of oxygenated volatile organic chemicals based on measurements over the Pacific during TRACE‐P

    H. B. Singh;L. J. Salas;R. B. Chatfield;E. Czech

  • Measurements and model simulations of the photostationary state during the Mauna Loa Observatory Photochemistry Experiment: Implications for radical concentrations and ozone production and loss rates

    B. A. Ridley;S. Madronich;R. B. Chatfield;J. G. Walega

  • Chemistry of hydrogen oxide radicals (HO x ) in the Arctic troposphere in spring

    Jialin Mao;Daniel J. Jacob;M. J. Evans;J. R. Olson

  • Formaldehyde Distribution over North America: Implications for Satellite Retrievals of Formaldehyde Columns and Isoprene Emission

    Dylan B. Millet;Daniel J. Jacob;Solène Turquety;Rynda C. Hudman

  • Ozone chemistry in western U.S. wildfire plumes

    Unknown

  • The Deep Convective Clouds and Chemistry (DC3) Field Campaign

    Mary C. Barth;Christopher A. Cantrell;William H. Brune;Steven A. Rutledge

  • Primary and secondary sources of formaldehyde in urban atmospheres: Houston Texas region

    D. D. Parrish;T. B. Ryerson;Johan Mellqvist;John Johansson

  • Development of a tunable mid-IR difference frequency laser source for highly sensitive airborne trace gas detection.

    Richter D;Fried A;Wert Bp;Walega Jg

  • A study of the photochemistry and ozone budget during the Mauna Loa Observatory Photochemistry Experiment

    S. C. Liu;M. Trainer;M. A. Carroll;G. Hübler

  • H2O2, O3 and SO2 measurements in the lower troposphere over the eastern United States during fall

    Brian G. Heikes;Gregory L. Kok;James G. Walega;Allan L. Lazrus

  • A small, high-sensitivity, medium-response ozone detector suitable for measurements from light aircraft

    B. A. Ridley;F. E. Grahek;J. G. Walega

  • Regional ozone and urban plumes in the southeastern United States: Birmingham, A case study

    M. Trainer;B. A. Ridley;M. P. Buhr;G. Kok

  • New insights into the column CH2O/NO2 ratio as an indicator of near-surface ozone sensitivity

    Jason R. Schroeder;James H. Crawford;Alan Fried;James Walega

  • Distributions of NO, NOx, NOy, and O3 to 12 km altitude during the summer monsoon season over New Mexico

    B. A. Ridley;J. G. Walega;J. E. Dye;F. E. Grahek

  • Intercomparison of NO2 measurement techniques

    F. C. Fehsenfeld;J. W. Drummond;U. K. Roychowdhury;P. J. Galvin

  • Chemical evolution of volatile organic compounds in the outflow of the Mexico City metropolitan area

    E. C. Apel;L. K. Emmons;T. Karl;F. Flocke

  • The behavior of some organic nitrates at Boulder and Niwot Ridge, Colorado

    B. A. Ridley;J. D. Shetter;J. G. Walega;S. Madronich

  • Secondary organic aerosols from anthropogenic volatile organic compounds contribute substantially to air pollution mortality

    Benjamin A. Nault;Benjamin A. Nault;Duseong S. Jo;Duseong S. Jo;Brian C. McDonald;Brian C. McDonald;Pedro Campuzano-Jost;Pedro Campuzano-Jost

  • Observing atmospheric formaldehyde (HCHO) from space: validation and intercomparison of six retrievals from four satellites (OMI, GOME2A, GOME2B, OMPS) with SEAC4RS aircraft observations over the Southeast US.

    Lei Zhu;Daniel J. Jacob;Patrick S. Kim;Jenny A. Fisher

  • Is the Arctic Surface Layer a Source and Sink of NOx in Winter/Spring?

    B. Ridley;J. Walega;D. Montzka;F. Grahek

  • On the production of active nitrogen by thunderstorms over New Mexico

    B. A. Ridley;J. E. Dye;J. G. Walega;J. Zheng

Frequent Co-Authors

Alan Fried
Alan Fried University of Colorado Boulder
Brian A. Ridley
Brian A. Ridley National Center for Atmospheric Research
Andrew J. Weinheimer
Andrew J. Weinheimer National Center for Atmospheric Research
Donald R. Blake
Donald R. Blake University of California, Irvine
Brian G. Heikes
Brian G. Heikes University of Rhode Island
Christopher A. Cantrell
Christopher A. Cantrell University of Colorado Boulder
Frank Flocke
Frank Flocke National Center for Atmospheric Research
Nicola J. Blake
Nicola J. Blake University of California, Irvine
James H. Crawford
James H. Crawford Langley Research Center
Armin Wisthaler
Armin Wisthaler University of Oslo

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