World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
37
Citations
6803
World Ranking
8812
National Ranking
3158

Robin L. Dennis 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 Robin L. Dennis 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: 114 publications — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Robin L. Dennis 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 Robin L. Dennis 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: 37 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Overview

Robin L. Dennis is affiliated with the Environmental Protection Agency in the United States. Their research primarily focuses on areas within Earth and Planetary Sciences as well as Environmental Science. The main fields of study covered in their work include:

  • Earth and Planetary Sciences
  • Environmental Science

Within these fields, their subfields of study further detail specific areas of expertise, such as:

  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Environmental Engineering

Robin L. Dennis has contributed scholarly articles to publication venues with a notable presence in Environmental Earth Sciences.

Their body of work addresses core topics centered on groundwater and related geological and environmental systems. These topics include:

  • Groundwater and Isotope Geochemistry
  • Karst Systems and Hydrogeology
  • Groundwater and Watershed Analysis

Among their recent papers is:

  • Hydrochemical and stable isotope data of water in karst aquifers during normal flow in South Africa, published in 2021 in Environmental Earth Sciences

This publication contributes to understanding water chemistry and isotope variations within karst aquifers, a significant area in hydrogeological research.

Collaboration has been a part of Dennis's research process, with frequent coauthors including:

  • Naziha Mokadem
  • Ingrid Dennis

Best Publications

  • NARSTO critical review of photochemical models and modeling

    Armistead Russell;Robin Dennis

  • Effects of nitrogen deposition and empirical nitrogen critical loads for ecoregions of the United States

    Linda H. Pardo;Mike E. Fenn;Christine L. Goodale;Linda. H. Geiser

  • Influence of increased isoprene emissions on regional ozone modeling

    Thomas Pierce;Christopher Geron;Lucille Bender;Robin Dennis

  • Atmospheric Deposition of nitrogen: Implications for nutrient over-enrichment of coastal waters

    Hans W. Paerl;Robin L. Dennis;David R. Whitall

  • New unbiased symmetric metrics for evaluation of air quality models

    Shaocai Yu;Brian Eder;Robin Dennis;Shao-Hang Chu

  • Ecosystem services altered by human changes in the nitrogen cycle: a new perspective for US decision making.

    Jana E. Compton;John A. Harrison;Robin L. Dennis;Tara L. Greaver

  • A framework for evaluating regional-scale numerical photochemical modeling systems

    Robin Dennis;Tyler Fox;Montse Fuentes;Alice Gilliland

  • Ecological effects of nitrogen and sulfur air pollution in the US: what do we know?

    Tara L Greaver;Timothy J Sullivan;Jeffrey D Herrick;Mary C Barber

  • Primary and secondary organic aerosols over the United States: estimates on the basis of observed organic carbon (OC) and elemental carbon (EC), and air quality modeled primary OC/EC ratios

    Shaocai Yu;Robin L. Dennis;Prakash V. Bhave;Brian K. Eder

  • Evaluation of a regional air-quality model with bidirectional NH 3 exchange coupled to an agroecosystem model

    J. O. Bash;E. J. Cooter;R. L. Dennis;J. T. Walker

  • Seasonal NH3 emission estimates for the eastern United States based on ammonium wet concentrations and an inverse modeling method

    Alice B. Gilliland;Robin L. Dennis;Shawn J. Roselle;Thomas E. Pierce

  • Analysis of radical propagation efficiency to assess ozone sensitivity to hydrocarbons and NO x : 1. Local indicators of instantaneous odd oxygen production sensitivity

    Gail S. Tonnesen;Robin L. Dennis

  • The next generation of integrated air quality modeling: EPA's models-3

    Robin L. Dennis;Daewon W. Byun;Joan H. Novak;Kenneth J. Galluppi

  • Environmental impact of atmospheric NH3 emissions under present and future conditions in the eastern United States

    R. W. Pinder;A. B. Gilliland;R. L. Dennis

  • Analysis of radical propagation efficiency to assess ozone sensitivity to hydrocarbons and NO x : 2. Long‐lived species as indicators of ozone concentration sensitivity

    Gail S. Tonnesen;Robin L. Dennis

  • A comparison of CMAQ HONO predictions with observations from the Northeast Oxidant and Particle Study

    Golam Sarwar;Shawn J. Roselle;Rohit Mathur;Wyat Appel

  • An assessment of the ability of three‐dimensional air quality models with current thermodynamic equilibrium models to predict aerosol NO3−

    Shaocai Yu;Shaocai Yu;Robin Dennis;Robin Dennis;Shawn Roselle;Shawn Roselle;Athanasios Nenes

  • Seasonal NH3 emissions for the continental united states: Inverse model estimation and evaluation

    Alice B. Gilliland;K. Wyat Appel;Robert W. Pinder;Robin L. Dennis

  • Design artifacts in eulerian air quality models: evaluation of the effects of layer thickness and vertical profile correction on surface ozone concentrations

    Daewon W. Byun;Robin Dennis

  • A multi-resolution assessment of the Community Multiscale Air Quality (CMAQ) model v4.7 wet deposition estimates for 2002–2006

    K. W. Appel;K. M. Foley;J. O. Bash;R. W. Pinder

Frequent Co-Authors

Shaocai Yu
Shaocai Yu Zhejiang University
John T. Walker
John T. Walker Environmental Protection Agency
Charles T. Driscoll
Charles T. Driscoll Syracuse University
Prakash V. Bhave
Prakash V. Bhave Duke University
Robert W. Pinder
Robert W. Pinder Environmental Protection Agency
Jana E. Compton
Jana E. Compton Environmental Protection Agency
Jesse O. Bash
Jesse O. Bash Environmental Protection Agency
Lingli Liu
Lingli Liu Chinese Academy of Sciences
Christopher G. Nolte
Christopher G. Nolte Environmental Protection Agency
Jonathan E. Pleim
Jonathan E. Pleim Environmental Protection Agency

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