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 76 1209 1146 523 482 218 19992

Leon Clarke publications per year

The chart shows the history of publications by Leon Clarke between 2003 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Leon Clarke published across 23 years, from 2003 to 2025, averaging 10.1 papers a year. Output peaked at 22 publications in 2018. 5 of the 233 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 2003 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2018. 2003: 1 publication 2004: 0 publications 2005: 0 publications 2006: 4 publications 2007: 7 publications 2008: 7 publications 2009: 12 publications 2010: 0 publications 2011: 9 publications 2012: 17 publications 2013: 14 publications 2014: 20 publications 2015: 18 publications 2016: 14 publications 2017: 16 publications 2018: 22 publications 2019: 12 publications 2020: 20 publications 2021: 22 publications 2022: 7 publications 2023: 6 publications 2024: 3 publications 2025: 2 publications
2003 2025

233 publications in total across all disciplines

View publications per year as a table
Leon Clarke: publications per year, 2003 to 2025
Year Publications
2003 1
2004 0
2005 0
2006 4
2007 7
2008 7
2009 12
2010 0
2011 9
2012 17
2013 14
2014 20
2015 18
2016 14
2017 16
2018 22
2019 12
2020 20
2021 22
2022 7
2023 6
2024 3
2025 2
Total 233
Download as CSV

Leon Clarke 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 Leon Clarke 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, 211–220 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: 218 publications — 70th percentile

70% 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
171–180 444
181–190 400
191–200 377
201–210 318
211–220 282 218
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

Leon Clarke 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 Leon Clarke 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, 76 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: 76 D-Index — 88th percentile

88% 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
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78 76
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

Overview

Leon Clarke is affiliated with the University of Maryland, College Park in the United States. Their research primarily spans the fields of Environmental Science and Economics, Econometrics and Finance, reflecting interdisciplinary expertise in environmental and economic dimensions of climate and energy systems.

Their work covers several subfields, including Economics and Econometrics, Renewable Energy, Sustainability and the Environment, Environmental Engineering, Global and Planetary Change, and Pollution. This diverse subfield engagement suggests a broad approach to understanding and addressing environmental and economic challenges.

Leon Clarke's main topics of research focus on Climate Change Policy and Economics, Environmental Impact and Sustainability, Global Energy and Sustainability Research, Atmospheric and Environmental Gas Dynamics, Energy and Environment Impacts, Energy, Environment, and Transportation Policies, and Integrated Energy Systems Optimization. These topics illustrate their involvement in analyzing both the policy frameworks and technical systems related to climate change and energy sustainability.

The scientist has published in several prominent venues, including:

  • Energy and Climate Change
  • Zenodo (CERN European Organization for Nuclear Research)
  • Nature Communications
  • Environmental Research Letters
  • Energy Strategy Reviews

Frequent collaborators include Haewon McJeon, Jae Edmonds, Ryna Cui, Nathan Hultman, and Thomas Wild, indicating a network of coauthors that spans a range of expertise and likely supports comprehensive studies across climate and energy domains.

Among recent papers by Leon Clarke are:

  • "Pathways of China's PM2.5 air quality 2015-2060 in the context of carbon neutrality" (2021, National Science Review)
  • "A plant-by-plant strategy for high-ambition coal power phaseout in China" (2021, Nature Communications)
  • "Energy systems in scenarios at net-zero CO2 emissions" (2021, Nature Communications)
  • "Net-zero deep decarbonization pathways in Latin America: Challenges and opportunities" (2020, Energy Strategy Reviews)
  • "Fusing subnational with national climate action is central to decarbonization: the case of the United States" (2020, Nature Communications)

Best Publications

  • RCP4.5: a pathway for stabilization of radiative forcing by 2100

    Allison M. Thomson;Katherine V. Calvin;Steven J. Smith;G. Page Kyle

  • Implications of limiting CO2 concentrations for land use and energy.

    Marshall A. Wise;Katherine V. Calvin;Allison M. Thomson;Leon E. Clarke

  • Assessing Transformation Pathways

    L Clarke;K Jiang;K Akimoto;M Babiker

  • Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations

    Leon E. Clarke;James A. Edmonds;Henry D. Jacoby;John M. Reilly

  • International climate policy architectures: Overview of the EMF 22 International Scenarios

    Leon Clarke;Jae Edmonds;Volker Krey;Richard Richels

  • The role of technology for achieving climate policy objectives: overview of the EMF 27 study on global technology and climate policy strategies.

    Elmar Kriegler;John Weyant;Geoffrey J. Blanford;Volker Krey

  • A new scenario logic for the Paris Agreement long-term temperature goal

    Joeri Rogelj;Joeri Rogelj;Joeri Rogelj;Daniel Huppmann;Volker Krey;Volker Krey;Keywan Riahi;Keywan Riahi

  • GCAM v5.1: representing the linkages between energy, water, land, climate, and economic systems

    Katherine Calvin;Pralit Patel;Leon Clarke;Ghassem Asrar

  • The SSP4: A world of deepening inequality

    Katherine Calvin;Ben Bond-Lamberty;Leon Clarke;James Edmonds

  • Can Paris pledges avert severe climate change

    Allen A. Fawcett;Gokul C. Iyer;Leon E. Clarke;James A. Edmonds

  • Pathways of China's PM2.5 air quality 2015–2060 in the context of carbon neutrality

    Jing Cheng;Dan Tong;Dan Tong;Qiang Zhang;Yang Liu

  • Limited impact on decadal-scale climate change from increased use of natural gas

    Haewon McJeon;Jae Edmonds;Nico Bauer;Leon Clarke

  • China's transportation energy consumption and CO2 emissions from a global perspective

    Xiang Yin;Wenying Chen;Jiyong Eom;Jiyong Eom;Leon E. Clarke

  • Long-term global water projections using six socioeconomic scenarios in an integrated assessment modeling framework

    Mohamad I. Hejazi;James A. Edmonds;Leon E. Clarke;G. Page Kyle

  • Energy systems in scenarios at net-zero CO2 emissions.

    Julianne DeAngelo;Inês Azevedo;John Bistline;Leon Clarke

  • Renewable Energy in the Context of Sustainable Development

    Jayant Sathaye;Oswaldo Lucon;Atiq Rahman;John Christensen

  • Getting from here to there – energy technology transformation pathways in the EMF27 scenarios

    Volker Krey;Gunnar Luderer;Leon E. Clarke;Elmar Kriegler

  • Dynamic projection of anthropogenic emissions in China: methodology and 2015–2050 emission pathways under a range of socio-economic, climate policy, and pollution control scenarios

    Dan Tong;Jing Cheng;Yang Liu;Sha Yu

  • IPCC Fifth Assessment Synthesis Report-Climate Change 2014 Synthesis Report

    Myles R. Allen;Vicente R. Barros;John Broome;Wolfgang Cramer

  • A plant-by-plant strategy for high-ambition coal power phaseout in China

    Ryna Yiyun Cui;Nathan Hultman;Diyang Cui;Haewon McJeon;Haewon McJeon

  • Modeling the effect of climate change on U.S. state-level buildings energy demands in an integrated assessment framework

    Yuyu Zhou;Leon Clarke;Jiyong Eom;Page Kyle

  • Diffusion of low-carbon technologies and the feasibility of long-term climate targets

    Gokul Iyer;Gokul Iyer;Nathan Hultman;Nathan Hultman;Jiyong Eom;Haewon McJeon

Frequent Co-Authors

James A. Edmonds
James A. Edmonds Pacific Northwest National Laboratory
Marshall Wise
Marshall Wise Pacific Northwest National Laboratory
Katherine Calvin
Katherine Calvin Pacific Northwest National Laboratory
Page Kyle
Page Kyle Pacific Northwest National Laboratory
Mohamad Hejazi
Mohamad Hejazi Pacific Northwest National Laboratory
Steven J. Smith
Steven J. Smith Pacific Northwest National Laboratory
Fernando Miralles-Wilhelm
Fernando Miralles-Wilhelm University of Maryland, College Park
Yuyu Zhou
Yuyu Zhou Iowa State University
Massimo Tavoni
Massimo Tavoni Polytechnic University of Milan
Allison M. Thomson
Allison M. Thomson University of Maryland, College Park

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

Exploring Environmental Sciences in the USA opens doors to various online degrees that complement this field. For professionals seeking advanced education without extensive research commitments, programs like the online edd no dissertation options provide flexibility and focused curriculum designed to enhance leadership skills in educational settings.

Those aiming to progress from a Master’s in Education to a doctoral level can benefit from the best online eds to edd programs. These pathways support career advancement without the constraints of traditional on-campus attendance, often balancing work and study effectively.

Additionally, individuals interested in social aspects related to environmental sciences may consider affordable and accessible options like online dsw programs, which equip students with skills to influence policy and community well-being through social work at the doctoral level.

For those beginning their educational journey or seeking broad interdisciplinary knowledge, pursuing an affordable online general studies degree offers a versatile foundation. This can be especially beneficial for environmental science students aiming to diversify their expertise across multiple domains.

Best Scientists Citing Leon Clarke

Trending Scientists

Recently Published Articles