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 62 2596 2475 1047 969 165 14380

R. Todd Clancy publications per year

The chart shows the history of publications by R. Todd Clancy between 1979 and 2023, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. R. Todd Clancy published across 45 years, from 1979 to 2023, averaging 3.7 papers a year. Output peaked at 11 publications in 1994. 5 of the 166 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1979 to 2023. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 1994. 1979: 1 publication 1980: 0 publications 1981: 1 publication 1982: 1 publication 1983: 2 publications 1984: 2 publications 1985: 3 publications 1986: 1 publication 1987: 4 publications 1988: 4 publications 1989: 1 publication 1990: 6 publications 1991: 4 publications 1992: 4 publications 1993: 1 publication 1994: 11 publications 1995: 6 publications 1996: 7 publications 1997: 5 publications 1998: 6 publications 1999: 4 publications 2000: 2 publications 2001: 5 publications 2002: 1 publication 2003: 4 publications 2004: 2 publications 2005: 1 publication 2006: 1 publication 2007: 6 publications 2008: 5 publications 2009: 4 publications 2010: 5 publications 2011: 2 publications 2012: 5 publications 2013: 4 publications 2014: 0 publications 2015: 2 publications 2016: 4 publications 2017: 9 publications 2018: 5 publications 2019: 8 publications 2020: 4 publications 2021: 8 publications 2022: 3 publications 2023: 2 publications
1979 2023

166 publications in total across all disciplines

View publications per year as a table
R. Todd Clancy: publications per year, 1979 to 2023
Year Publications
1979 1
1980 0
1981 1
1982 1
1983 2
1984 2
1985 3
1986 1
1987 4
1988 4
1989 1
1990 6
1991 4
1992 4
1993 1
1994 11
1995 6
1996 7
1997 5
1998 6
1999 4
2000 2
2001 5
2002 1
2003 4
2004 2
2005 1
2006 1
2007 6
2008 5
2009 4
2010 5
2011 2
2012 5
2013 4
2014 0
2015 2
2016 4
2017 9
2018 5
2019 8
2020 4
2021 8
2022 3
2023 2
Total 166
Download as CSV

R. Todd Clancy 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 R. Todd Clancy 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: 165 publications — 49th percentile

49% 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
161–170 444 165
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

R. Todd Clancy 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 R. Todd Clancy 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, 62 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: 62 D-Index — 74th percentile

74% 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 62
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
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

R. Todd Clancy is affiliated with the Space Science Institute in the United States. Their research primarily focuses on areas within physics and astronomy, with a significant emphasis on planetary science and exploration. Their work spans subfields such as astronomy and astrophysics, aerospace engineering, physiology, and atmospheric science.

The scientist has contributed to the body of knowledge concerning the Martian atmosphere and its components. Their recent papers showcase investigations into water vapor, ice clouds, and atmospheric chemistry on Mars, often utilizing data from orbiting spacecraft.

Selected recent publications include:

  • "Strong Variability of Martian Water Ice Clouds During Dust Storms Revealed From ExoMars Trace Gas Orbiter/NOMAD" (2020, Journal of Geophysical Research Planets)
  • "The CRISM investigation in Mars orbit: Overview, history, and delivered data products" (2023, Icarus)
  • "Annual Appearance of Hydrogen Chloride on Mars and a Striking Similarity With the Water Vapor Vertical Distribution Observed by TGO/NOMAD" (2021, Geophysical Research Letters)
  • "Global Vertical Distribution of Water Vapor on Mars: Results From 3.5 Years of ExoMars-TGO/NOMAD Science Operations" (2022, Journal of Geophysical Research Planets)
  • "First Detection and Thermal Characterization of Terminator CO2Ice Clouds With ExoMars/NOMAD" (2021, Geophysical Research Letters)

Frequent coauthors in their publications include Shohei Aoki, M. D. Smith, Frank Daerden, Ann Carine Vandaele, and Giuliano Liuzzi. Collaboration with these researchers appears consistently across multiple studies.

The main venues where this scientist publishes include:

  • Journal of Geophysical Research Planets
  • Geophysical Research Letters
  • Icarus
  • Planetary and Space Science

R. Todd Clancy's work addresses topics such as:

  • Planetary Science and Exploration
  • Astro and Planetary Science
  • Space Exploration and Technology
  • Space Science and Extraterrestrial Life
  • Spaceflight effects on biology
  • Spacecraft and Cryogenic Technologies
  • Atmospheric Ozone and Climate

Their research contributes to understanding the Martian environment and its dynamic atmospheric processes, often leveraging long-term datasets obtained from space missions like the ExoMars Trace Gas Orbiter. The integration of atmospheric chemistry, cloud dynamics, and planetary surface conditions reflects the interdisciplinary nature of their scientific inquiries.

Best Publications

  • Context Camera Investigation on board the Mars Reconnaissance Orbiter

    Michael C. Malin;James F. Bell;Bruce A. Cantor;Michael A. Caplinger

  • Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on Mars Reconnaissance Orbiter (MRO)

    Scott Murchie;R. Arvidson;P. Bedini;K. Beisser

  • Mars Global Surveyor Thermal Emission Spectrometer experiment: Investigation description and surface science results

    Philip Christensen;J. L. Bandfield;V. E. Hamilton;Steven Ruff

  • An intercomparison of ground-based millimeter, MGS TES, and Viking atmospheric temperature measurements: Seasonal and interannual variability of temperatures and dust loading in the global Mars atmosphere

    R. T. Clancy;B. J. Sandor;M. J. Wolff;Philip Christensen

  • CRISM multispectral summary products: Parameterizing mineral diversity on Mars from reflectance

    S. M. Pelkey;J. F. Mustard;S. Murchie;R. T. Clancy

  • WATER VAPOR SATURATION AT LOW ALTITUDES AROUND MARS APHELION : A KEY TO MARS CLIMATE ?

    R.T. Clancy;A.W. Grossman;M.J. Wolff;P.B. James

  • A photochemical model of the martian atmosphere

    Hari Nair;Mark Allen;Ariel D. Anbar;Yuk L. Yung

  • Mars aerosol studies with the MGS TES emission phase function observations: Optical depths, particle sizes, and ice cloud types versus latitude and solar longitude

    R. Todd Clancy;Michael J. Wolff;Philip R. Christensen

  • Constraints on the size of Martian aerosols from Thermal Emission Spectrometer observations

    Michael J. Wolff;R. Todd Clancy

  • The structure of the upper atmosphere of mars: In situ accelerometer measurements from mars global surveyor

    G. M. Keating;S. W. Bougher;R. W. Zurek;R. H. Tolson

  • Wavelength dependence of dust aerosol single scattering albedo as observed by the Compact Reconnaissance Imaging Spectrometer

    M. J Wolff;M. D Smith;R. T Clancy;R Arvidson

  • The atmosphere and climate of Mars

    Robert M. Haberle;R. Todd Clancy;Francois Forget;Michael D. Smith

  • A new model for Mars atmospheric dust based upon analysis of ultraviolet through infrared observations from Mariner 9, Viking, and Phobos

    R. T. Clancy;S. W. Lee;G. R. Gladstone;W. W. McMillan

  • Constraints on dust aerosols from the Mars Exploration Rovers using MGS overflights and Mini‐TES

    Michael J. Wolff;Michael D. Smith;R. T. Clancy;N. Spanovich

  • Results from the Mars Global Surveyor Thermal Emission Spectrometer

    Philip Christensen;D. L. Anderson;S. C. Chase;R. T. Clancy

  • Compact Reconnaissance Imaging Spectrometer observations of water vapor and carbon monoxide

    Michael D. Smith;Michael J. Wolff;R. Todd Clancy;Scott L. Murchie

  • Heterogeneous chemistry in the atmosphere of Mars

    Franck Lefèvre;Jean-Loup Bertaux;R. Todd Clancy;Thérèse Encrenaz

  • Photochemistry and transport of carbon monoxide in the middle atmosphere

    S. Solomon;R. R. Garcia;J. J. Olivero;R. M. Bevilacqua

  • Martian dust storm impact on atmospheric H2O and D/H observed by ExoMars Trace Gas Orbiter

    Ann Carine Vandaele;Oleg Korablev;Frank Daerden;Shohei Aoki

  • The Mars Dust Cycle

    Melinda A. Kahre;James R. Murphy;Claire E. Newman;R. John Wilson

  • Climatology and trends of mesospheric (58–90 km) temperatures based upon 1982–1986 SME Limb scattering profiles

    R. Todd Clancy;David W. Rusch

Frequent Co-Authors

Michael J. Wolff
Michael J. Wolff Space Science Institute
David W. Rusch
David W. Rusch University of Colorado Boulder
Bruce A. Cantor
Bruce A. Cantor Malin Space Science Systems (United States)
Scott L. Murchie
Scott L. Murchie Johns Hopkins University Applied Physics Laboratory
Ann Carine Vandaele
Ann Carine Vandaele Royal Belgian Institute for Space Aeronomy
Michael C. Malin
Michael C. Malin Malin Space Science Systems (United States)
James F. Bell
James F. Bell Arizona State University
François Forget
François Forget Centre national de la recherche scientifique, CNRS
Franck Lefèvre
Franck Lefèvre Centre national de la recherche scientifique, CNRS
Michael J. Mumma
Michael J. Mumma Goddard Space Flight Center

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 students interested in Environmental Sciences, exploring related online degrees can open up diverse career opportunities. For those looking to broaden their skill set or pursue leadership roles, affordable options like online dsw programs offer advanced education in social work, which complements environmental policy and community outreach efforts.

If you're seeking flexibility and affordability, a cheap online general studies degree can provide a customizable curriculum that incorporates environmental science topics alongside other disciplines. This option suits those wanting a well-rounded education with practical application.

For students aiming to balance workload with academic success, exploring the easiest bachelors degree programs online might be worthwhile. These programs often emphasize foundational skills and are approachable for students new to the field or seeking to complement existing qualifications.

Specifically tailored to earth and environmental sciences, an online geoscience degree provides specialized knowledge in geology, atmospheric science, and ecology. Graduates often pursue careers in environmental consulting, research, and natural resource management.

Combining these related online degrees can diversify your expertise and enhance your career prospects in today’s evolving environmental sector.

Best Scientists Citing R. Todd Clancy

Trending Scientists

Recently Published Articles