World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
36
Citations
6310
World Ranking
9092
National Ranking
675

Mark W. Claire 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 Mark W. Claire 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: 118 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

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

Mark W. Claire 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 Mark W. Claire 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: 36 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

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

Overview

Mark W. Claire is affiliated with the University of St Andrews in the United Kingdom. Their research broadly spans Earth and Planetary Sciences as well as Physics and Astronomy, with specific focus on several interrelated subjects within these fields.

The main fields of study for Claire include:

  • Earth and Planetary Sciences
  • Physics and Astronomy

Within these disciplines, Claire's subfields of study encompass:

  • Astronomy and Astrophysics
  • Atmospheric Science
  • Paleontology
  • Geophysics
  • Ecology

Their work covers key topics such as:

  • Paleontology and Stratigraphy of Fossils
  • Geology and Paleoclimatology Research
  • Geological and Geochemical Analysis
  • Astro and Planetary Science
  • Planetary Science and Exploration
  • Isotope Analysis in Ecology
  • Atmospheric and Environmental Gas Dynamics

Claire has contributed multiple papers to prominent scientific journals. Recent notable publications include:

  • The Great Oxidation Event preceded a Paleoproterozoic "snowball Earth" (2020), Proceedings of the National Academy of Sciences
  • Photochemical modelling of atmospheric oxygen levels confirms two stable states (2021), Earth and Planetary Science Letters
  • Rapid timescale for an oxic transition during the Great Oxidation Event and the instability of low atmospheric O 2 (2022), Proceedings of the National Academy of Sciences
  • Isotopic constraints on lightning as a source of fixed nitrogen in Earth's early biosphere (2023), Nature Geoscience
  • Mission to Planet Earth: The First Two Billion Years (2020), Space Science Reviews

The venues where Claire publishes frequently include:

  • Proceedings of the National Academy of Sciences
  • Space Science Reviews
  • Goldschmidt Abstracts
  • Goldschmidt2021 abstracts
  • Nature Geoscience

Claire collaborates regularly with several researchers, including:

  • Aubrey L. Zerkle
  • Tommaso Di Rocco
  • Matthew R. Warke
  • Eva E. Stüeken
  • Ch. Helling

Best Publications

  • Stellar SEDs from 0.3 to 2.5 μm: Tracing the Stellar Locus and Searching for Color Outliers in the SDSS and 2MASS

    K. R. Covey;Ž. Ivezić;D. Schlegel;D. Finkbeiner

  • How Earth's atmosphere evolved to an oxic state: A status report

    David C. Catling;Mark W. Claire

  • The loss of mass‐independent fractionation in sulfur due to a Palaeoproterozoic collapse of atmospheric methane

    KJ Zahnle;MW Claire;DC Catling;DC Catling

  • Atmospheric origins of perchlorate on Mars and in the Atacama

    D. C. Catling;D. C. Catling;Mark Claire;K. J. Zahnle;R. C. Quinn;R. C. Quinn

  • Nitrogen-enhanced greenhouse warming on early Earth

    Colin Goldblatt;Colin Goldblatt;Mark W. Claire;Timothy M. Lenton;Adrian J. Matthews

  • The Evolution of Solar Flux from 0.1 nm to 160 μm: Quantitative Estimates for Planetary Studies

    Mark W. Claire;Mark W. Claire;John Sheets;John Sheets;Martin Cohen;Ignasi Ribas

  • A bistable organic-rich atmosphere on the Neoarchaean Earth

    Aubrey L. Zerkle;Mark W. Claire;Mark W. Claire;Shawn D. Domagal-Goldman;Shawn D. Domagal-Goldman;James Farquhar

  • Biogeochemical modelling of the rise in atmospheric oxygen

    M. W. Claire;D. C. Catling;D. C. Catling;K. J. Zahnle

  • ABIOTIC OZONE AND OXYGEN IN ATMOSPHERES SIMILAR TO PREBIOTIC EARTH

    Shawn D. Domagal-Goldman;Shawn D. Domagal-Goldman;Antigona Segura;Antigona Segura;Mark W. Claire;Mark W. Claire;Tyler D. Robinson;Tyler D. Robinson

  • Evidence of martian perchlorate, chlorate, and nitrate in Mars meteorite EETA79001: Implications for oxidants and organics

    Samuel P. Kounaves;Glen D. O’Neil;Shannon T. Stroble

  • The Pale Orange Dot: The Spectrum and Habitability of Hazy Archean Earth.

    Giada Arney;Shawn D. Domagal-Goldman;Victoria S. Meadows;Eric T. Wolf

  • Using Biogenic Sulfur Gases as Remotely Detectable Biosignatures on Anoxic Planets

    Shawn D. Domagal-Goldman;Victoria S. Meadows;Victoria S. Meadows;Mark W. Claire;Mark W. Claire;James F. Kasting;James F. Kasting

  • Pathways for Neoarchean pyrite formation constrained by mass-independent sulfur isotopes

    James Farquhar;James Farquhar;John Cliff;Aubrey L. Zerkle;Alexey Kamyshny

  • Onset of the aerobic nitrogen cycle during the Great Oxidation Event

    Aubrey L. Zerkle;Simon W. Poulton;Robert J. Newton;Colin Mettam

  • Two-billion-year-old evaporites capture Earth's great oxidation.

    Clara Blättler;Mark Claire;Anthony Robert Prave;K. Kirsimäe

  • The formation of sulfate, nitrate and perchlorate salts in the martian atmosphere

    Megan L. Smith;Mark W. Claire;David C. Catling;Kevin J. Zahnle

  • The Great Oxidation Event preceded a Paleoproterozoic “snowball Earth”

    Matthew R Warke;Tommaso Di Rocco;Tommaso Di Rocco;Aubrey L Zerkle;Aivo Lepland

  • Modeling aqueous perchlorate chemistries with applications to Mars

    G.M. Marion;D.C. Catling;K.J. Zahnle;M.W. Claire

  • Photochemical and climate consequences of sulfur outgassing on early Mars

    Feng Tian;Mark W. Claire;Jacob D. Haqq-Misra;Megan Smith

  • Modeling the signature of sulfur mass-independent fractionation produced in the Archean atmosphere

    Mark W. Claire;Mark W. Claire;James F. Kasting;James F. Kasting;Shawn D. Domagal-Goldman;Shawn D. Domagal-Goldman;Eva E. Stüeken

  • Habitable Zone Lifetimes of Exoplanets around Main Sequence Stars

    Andrew J. Rushby;Mark W. Claire;Hugh Osborn;Andrew J. Watson

  • Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets.

    Amit Misra;Victoria Meadows;Mark Claire;Dave Crisp

  • Ensemble Properties of Comets in the Sloan Digital Sky Survey

    Michael Solontoi;Željko Ivezić;Mario Jurić;Andrew C. Becker

  • High rates of anaerobic methanotrophy at low sulfate concentrations with implications for past and present methane levels.

    E. J. Beal;M. W. Claire;C. H. House

Frequent Co-Authors

David C. Catling
David C. Catling University of Washington
Kevin Zahnle
Kevin Zahnle Ames Research Center
Simon W. Poulton
Simon W. Poulton University of Leeds
James Farquhar
James Farquhar University of Maryland, College Park
Andrew A. West
Andrew A. West Boston University
Robert H. Lupton
Robert H. Lupton Princeton University
Eva E. Stüeken
Eva E. Stüeken University of St Andrews
Anil C. Seth
Anil C. Seth University of Utah
Kevin R. Covey
Kevin R. Covey Western Washington University
Ignasi Ribas
Ignasi Ribas Institute of Space Sciences

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