World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
65
Citations
14786
World Ranking
2210
National Ranking
897

Richard L. Smith 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 Richard L. Smith 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.

Richard L. Smith 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 Richard L. Smith 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: 65 D-Index — 78th percentile

78% of scientists in this discipline score the same or lower.

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

Overview

Richard L. Smith is affiliated with the University of California, Riverside in the United States. Their research mainly focuses on the field of Engineering with significant contributions in several subfields including Biomedical Engineering, Materials Chemistry, Mechanical Engineering, Organic Chemistry, and Electronic, Optical and Magnetic Materials.

The scientist has authored numerous publications, frequently appearing in venues such as UNC Libraries, Green Chemistry, Chemical Engineering Journal, Renewable Energy, and ACS Sustainable Chemistry & Engineering. Their research spans several primary topics, including:

  • Catalysis for Biomass Conversion
  • Supercapacitor Materials and Fabrication
  • Catalysis and Hydrodesulfurization Studies
  • Nanomaterials for Catalytic Reactions
  • Mesoporous Materials and Catalysis
  • Biofuel Production and Bioconversion
  • Advanced Photocatalysis Techniques

Some of the recent papers authored or co-authored by Richard L. Smith include:

  • "Cycloamination strategies for renewable N-heterocycles," 2020, Green Chemistry
  • "Mg-coordinated self-assembly of MgO-doped ordered mesoporous carbons for selective recovery of phosphorus from aqueous solutions," 2020, Chemical Engineering Journal
  • "Critical assessment of reaction pathways for conversion of agricultural waste biomass into formic acid," 2021, Green Chemistry
  • "High-capacity structured MgO-Co adsorbent for removal of phosphorus from aqueous solutions," 2021, Chemical Engineering Journal
  • "Direct one-pot synthesis of ordered mesoporous carbons from lignin with metal coordinated self-assembly," 2021, Green Chemistry

Richard L. Smith has collaborated frequently with fellow researchers including Haixin Guo, Xinhua Qi, Janet Kiholm Smith, Richard T. Bliss, and Feng Shen.

In addition to journal articles, they have contributed to book publications such as "Production of Biofuels and Chemicals from Sustainable Recycling of Organic Solid Waste," published by Springer Nature (Netherlands) in 2022.

Best Publications

  • Extreme Value Analysis of Environmental Time Series: An Application to Trend Detection in Ground-Level Ozone

    Richard L. Smith

  • Quantifying Uncertainty in Projections of Regional Climate Change: A Bayesian Approach to the Analysis of Multimodel Ensembles

    Claudia Tebaldi;Richard L. Smith;Doug Nychka;Linda O. Mearns

  • Transport of microspheres and indigenous bacteria through a sandy aquifer: Results of natural- and forced-gradient tracer experiments

    Ronald W. Harvey;Leah H. George;Richard L. Smith;Denis R. LeBlanc

  • Effect of organic contamination upon microbial distributions and heterotrophic uptake in a cape cod, mass., aquifer

    R W Harvey;R L Smith;L George

  • Denitrification in nitrate-contaminated groundwater: Occurrence in steep vertical geochemical gradients

    Richard L Smith;Brian L Howes;John H Duff

  • Bayesian Modeling of Uncertainty in Ensembles of Climate Models

    Richard L. Smith;Claudia Tebaldi;Doug Nychka;Linda O. Mearns

  • Markov chain models for threshold exceedances

    Richard L. Smith;Jonathan A. Tawn;Stuart G. Coles

  • Regional probabilities of precipitation change: A Bayesian analysis of multimodel simulations

    C. Tebaldi;L. O. Mearns;D. Nychka;R. L. Smith

  • Bivariate Threshold Methods for Extremes

    Harry Joe;Richard L. Smith;Ishay Weissman

  • Denitrification in a sand and gravel aquifer.

    Richard L. Smith;John H. Duff

  • Ammonium transport and reaction in contaminated groundwater: Application of isotope tracers and isotope fractionation studies

    J. K. Böhlke;Richard L. Smith;Daniel N. Miller;Daniel N. Miller

  • Effects of the antimicrobial sulfamethoxazole on groundwater bacterial enrichment.

    Jennifer C. Underwood;Ronald W. Harvey;David W. Metge;Deborah A. Repert

  • The effect of horizontal resolution on simulation of very extreme US precipitation events in a global atmosphere model

    Michael F. Wehner;Richard L. Smith;G. Bala;Phillip Duffy

  • Bacterial dissimilatory reduction of arsenate and sulfate in meromictic Mono Lake, California

    Ronald S Oremland;Philip R Dowdle;Shelly Hoeft;Jonathan O Sharp

  • Electron donors utilized by sulfate-reducing bacteria in eutrophic lake sediments.

    Richard L. Smith;Michael J. Klug

  • Microbial and chemical factors influencing methane production in laboratory incubations of low-rank subsurface coals

    Stephen H. Harris;Richard L. Smith;Charles E. Barker

  • Multi-scale measurements and modeling of denitrification in streams with varying flow and nitrate concentration in the upper Mississippi River basin, USA

    John Karl Böhlke;Ronald C. Antweiler;Judson W. Harvey;Andrew E. Laursen

  • Importance of closely spaced vertical sampling in delineating chemical and microbiological gradients in groundwater studies

    Richard L. Smith;Ronald W. Harvey;Denis R. LeBlanc

  • A Bivariate Time Series Approach to Anthropogenic Trend Detection in Hemispheric Mean Temperatures

    Richard L. Smith;Tom M. L. Wigley;Benjamin D. Santer

  • Aquatic fulvic acids in microbially based ecosystems: Results from two desert lakes in Antarctica

    Diane M. McKnight;George R. Aiken;Richard L. Smith

  • Subsurface Microbial Diversity in Deep-Granitic-Fracture Water in Colorado

    Jason W. Sahl;Raleigh Schmidt;Elizabeth D. Swanner;Kevin W. Mandernack

  • Autotrophic, hydrogen-oxidizing, denitrifying bacteria in groundwater, potential agents for bioremediation of nitrate contamination.

    Richard L. Smith;Marnie L. Ceazan;Myron H. Brooks

  • Denitrification in san francisco bay intertidal sediments.

    Ronald S. Oremland;Cindy Umberger;Charles W. Culbertson;Richard L. Smith

Frequent Co-Authors

John Karl Böhlke
John Karl Böhlke United States Geological Survey
Ronald S. Oremland
Ronald S. Oremland United States Geological Survey
Ronald W. Harvey
Ronald W. Harvey United States Geological Survey
Larry B. Barber
Larry B. Barber United States Geological Survey
Diane M. McKnight
Diane M. McKnight University of Colorado Boulder
Donald G. Truhlar
Donald G. Truhlar University of Minnesota
Craig R. Tobias
Craig R. Tobias University of Connecticut
Mary A. Voytek
Mary A. Voytek National Aeronautics and Space Administration
James M. Tiedje
James M. Tiedje Michigan State University
Brian L. Howes
Brian L. Howes University of Massachusetts Dartmouth

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Related Online Degrees & Career Pathways

For those interested in Environmental Sciences, exploring related online degrees can open up diverse career opportunities. Many students start by considering a cheap online general studies degree as a flexible, cost-effective way to build foundational knowledge before specializing further.

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Additionally, degrees focusing on spatial data and mapping, like those from top colleges with gis programs, are increasingly important. GIS skills are highly valued in environmental science careers for analyzing and managing ecological data.

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