World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
62
Citations
14380
World Ranking
2593
National Ranking
1047

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.

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: 165 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

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

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.

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: 62 D-Index — 74th percentile

74% of scientists in this discipline score the same or lower.

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

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

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