World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 65 2213 2113 897 829 161 14786

Richard L. Smith publications per year

The chart shows the history of publications by Richard L. Smith between 1972 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Richard L. Smith published across 54 years, from 1972 to 2025, averaging 5.2 papers a year. Output peaked at 13 publications in 2009. 4 of the 280 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1972 to 2025. Vertical axis: number of publications, 0 to 13. Peak 13 publications in 2009. 1972: 2 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 1 publication 1981: 3 publications 1982: 3 publications 1983: 2 publications 1984: 6 publications 1985: 5 publications 1986: 4 publications 1987: 12 publications 1988: 7 publications 1989: 5 publications 1990: 5 publications 1991: 6 publications 1992: 6 publications 1993: 7 publications 1994: 10 publications 1995: 6 publications 1996: 5 publications 1997: 4 publications 1998: 6 publications 1999: 2 publications 2000: 10 publications 2001: 3 publications 2002: 2 publications 2003: 6 publications 2004: 10 publications 2005: 12 publications 2006: 8 publications 2007: 8 publications 2008: 8 publications 2009: 13 publications 2010: 12 publications 2011: 8 publications 2012: 8 publications 2013: 6 publications 2014: 11 publications 2015: 3 publications 2016: 11 publications 2017: 5 publications 2018: 6 publications 2019: 6 publications 2020: 6 publications 2021: 2 publications 2022: 0 publications 2023: 5 publications 2024: 2 publications 2025: 2 publications
1972 2025

280 publications in total across all disciplines

View publications per year as a table
Richard L. Smith: publications per year, 1972 to 2025
Year Publications
1972 2
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 1
1981 3
1982 3
1983 2
1984 6
1985 5
1986 4
1987 12
1988 7
1989 5
1990 5
1991 6
1992 6
1993 7
1994 10
1995 6
1996 5
1997 4
1998 6
1999 2
2000 10
2001 3
2002 2
2003 6
2004 10
2005 12
2006 8
2007 8
2008 8
2009 13
2010 12
2011 8
2012 8
2013 6
2014 11
2015 3
2016 11
2017 5
2018 6
2019 6
2020 6
2021 2
2022 0
2023 5
2024 2
2025 2
Total 280
Download as CSV

Richard L. Smith publications per year - data summary

  • Richard L. Smith, a Environmental Sciences scholar from University of California, Riverside, has 280 publications recorded across 54 years, from 1972 to 2025.
  • The oldest publication on record dates to 1972 and the most recent to 2025.
  • The most productive year is 2009, with 13 publications.
  • The least productive year with any output is 1980, with 1 publication.
  • 8 of the 54 years in the span carry no publications at all (1973, 1974, 1975, 1976 and others).
  • The rate of publication averages 5.2 papers per year over the whole span, or 6.1 per year counting only the 46 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 11 publications, 4% of the career total.
  • Split into equal eras - 1972-1989: 50 publications (2.8 per year); 1990-2007: 116 publications (6.4 per year); 2008-2025: 114 publications (6.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

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.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 161–170 publications, is where this scientist sits. 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
41–50 publications 690+

This scientist: 161 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544
141–150 541
151–160 539
161–170 444 161
171–180 444
181–190 400
191–200 377
201–210 318
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
Download as CSV

Richard L. Smith publication distribution in Environmental Sciences in 2026 - data summary

  • The chart plots the publication count of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 66 ranges running from 41–50 to 690+ publications.
  • Richard L. Smith, a Environmental Sciences scholar from University of California, Riverside, records 161 publications - the 47th percentile of the discipline.
  • 47% of ranked Environmental Sciences scientists score the same or lower than Richard L. Smith, and about 53% score higher.
  • The median of the discipline falls in the 161–170 publications range, and Richard L. Smith falls inside that same range.
  • The most crowded range is 121–130 publications, holding 617 scientists (6% of the field).
  • 67% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 690 publications or more, 100 scientists in all (1% of the field).

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.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 65 D-Index, is where this scientist sits. 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: 65 D-Index — 78th percentile

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

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

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119 65
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
Download as CSV

Richard L. Smith D-index placement in Environmental Sciences in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 97 ranges running from 30 to 126+ D-Index.
  • Richard L. Smith, a Environmental Sciences scholar from University of California, Riverside, records 65 D-Index - the 78th percentile of the discipline.
  • 78% of ranked Environmental Sciences scientists score the same or lower than Richard L. Smith, and about 22% score higher.
  • The median of the discipline falls in the 51 D-Index range, and Richard L. Smith ranks above the median.
  • The most crowded range is 45 D-Index, holding 348 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 54 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 126 D-Index or more, 92 scientists in all (<1% of the field).

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

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

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.

Some programs are designed to be more accessible, with options recognized as easy bachelor degrees that balance academic rigor and workload. These can be especially appealing for working adults or those seeking a manageable path to enhance their skills.

Specialized online programs in Earth sciences, such as geology degrees online, offer in-depth knowledge that complements environmental studies. These degrees are ideal for students aiming to work in resource management, conservation, or environmental consulting.

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.

Best Scientists Citing Richard L. Smith

Trending Scientists

Recently Published Articles