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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 51 3267 2989 1304 1160 374 8657

Robert J. Lillis publications per year

The chart shows the history of publications by Robert J. Lillis between 2004 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert J. Lillis published across 22 years, from 2004 to 2025, averaging 22.5 papers a year. Output peaked at 50 publications in 2017. 50 of the 494 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 2004 to 2025. Vertical axis: number of publications, 0 to 50. Peak 50 publications in 2017. 2004: 1 publication 2005: 5 publications 2006: 4 publications 2007: 7 publications 2008: 8 publications 2009: 11 publications 2010: 18 publications 2011: 13 publications 2012: 18 publications 2013: 16 publications 2014: 12 publications 2015: 49 publications 2016: 36 publications 2017: 50 publications 2018: 40 publications 2019: 43 publications 2020: 34 publications 2021: 39 publications 2022: 15 publications 2023: 25 publications 2024: 26 publications 2025: 24 publications
2004 2025

494 publications in total across all disciplines

View publications per year as a table
Robert J. Lillis: publications per year, 2004 to 2025
Year Publications
2004 1
2005 5
2006 4
2007 7
2008 8
2009 11
2010 18
2011 13
2012 18
2013 16
2014 12
2015 49
2016 36
2017 50
2018 40
2019 43
2020 34
2021 39
2022 15
2023 25
2024 26
2025 24
Total 494
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Robert J. Lillis publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Robert J. Lillis sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 368–377 publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 374 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60 374
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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Robert J. Lillis D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Robert J. Lillis sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 51 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 51 D-Index — 66th percentile

66% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178 51
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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Overview

Robert J. Lillis is a researcher affiliated with the University of California, Berkeley in the United States. Their research primarily spans the fields of Physics and Astronomy, with a detailed focus on Astronomy and Astrophysics. The subfields of their work also include Molecular Biology, Atmospheric Science, Aerospace Engineering, and Physiology, indicating a multidisciplinary approach to scientific investigation.

The foremost topics within Lillis's research encompass:

  • Planetary Science and Exploration
  • Astro and Planetary Science
  • Space Science and Extraterrestrial Life
  • Solar and Space Plasma Dynamics
  • Geomagnetism and Paleomagnetism Studies
  • Spaceflight effects on biology
  • Atmospheric Ozone and Climate

Lillis has contributed to a range of scientific publications, appearing in several notable venues. The most frequent publication platforms include:

  • Geophysical Research Letters
  • Journal of Geophysical Research Space Physics
  • Journal of Geophysical Research Planets
  • Space Science Reviews
  • Icarus

Among their recent papers are:

  • The Emirates Mars Mission (2022, Space Science Reviews)
  • Emirates Mars Mission Characterization of Mars Atmosphere Dynamics and Processes (2021, Space Science Reviews)
  • Inverted-V Electron Acceleration Events Concurring With Localized Auroral Observations at Mars by MAVEN (2020, Geophysical Research Letters)
  • The Influence of Interplanetary Magnetic Field Direction on Martian Crustal Magnetic Field Topology (2020, Geophysical Research Letters)
  • The Emirates Mars Ultraviolet Spectrometer (EMUS) for the EMM Mission (2021, Space Science Reviews)

Lillis has collaborated frequently with several researchers in their field. Notable co-authors include:

  • Shannon Curry
  • J. S. Halekas
  • Sonal Jain
  • D. A. Brain
  • Justin Deighan

Best Publications

  • The Mars Atmosphere and Volatile Evolution (MAVEN) Mission

    Bruce M. Jakosky;R. P. Lin;J. M. Grebowsky;J. G. Luhmann

  • The Space Physics Environment Data Analysis System (SPEDAS)

    V. Angelopoulos;P. Cruce;A. Drozdov;E. W. Grimes

  • Loss of the Martian atmosphere to space: Present-day loss rates determined from MAVEN observations and integrated loss through time

    Bruce Jakosky;David Brain;Michael Chaffin;Shannon M. Curry

  • MAVEN observations of the response of Mars to an interplanetary coronal mass ejection

    Bruce M. Jakosky;Joseph M. Grebowsky;Janet G. Luhmann;J. Connerney

  • Electron pitch angle distributions as indicators of magnetic field topology near Mars

    D. A. Brain;R. J. Lillis;D. L. Mitchell;J. S. Halekas

  • Rapid decrease in Martian crustal magnetization in the Noachian era: Implications for the dynamo and climate of early Mars

    R. J. Lillis;H. V. Frey;M. Manga

  • The spatial distribution of planetary ion fluxes near Mars observed by MAVEN

    David A. Brain;J. P. Mcfadden;Jasper S. Halekas;J. E. P. Connerney

  • A New Model of the Crustal Magnetic Field of Mars Using MGS and MAVEN

    Benoit Langlais;Erwan Thébault;Aymeric Houliez;Michael E. Purucker

  • Variability of the altitude of the Martian sheath

    D. A. Brain;J. S. Halekas;R. Lillis;D. L. Mitchell

  • An improved crustal magnetic field map of Mars from electron reflectometry: Highland volcano magmatic history and the end of the martian dynamo

    Robert J. Lillis;Herbert V. Frey;Michael Manga;David L. Mitchell

  • Giant impacts on early Mars and the cessation of the Martian dynamo

    J. H. Roberts;J. H. Roberts;R. J. Lillis;M. Manga

  • Discovery of diffuse aurora on Mars

    N. M. Schneider;J. I. Deighan;S. K. Jain;Arnaud Stiepen

  • Photochemical escape of oxygen from Mars: First results from MAVEN in situ data

    Robert J. Lillis;Justin Deighan;Jane L. Fox;Stephen W. Bougher

  • Characterizing Atmospheric Escape from Mars Today and Through Time, with MAVEN

    R. J. Lillis;D. A. Brain;Stephen W. Bougher;F. Leblanc

  • Early MAVEN Deep Dip campaign reveals thermosphere and ionosphere variability

    S. Bougher;B. Jakosky;J. Halekas;J. Grebowsky

  • Time history of the Martian dynamo from crater magnetic field analysis

    Robert J. Lillis;Stuart Robbins;Michael Manga;Jasper S. Halekas

  • Nightside ionosphere of Mars: Modeling the effects of crustal magnetic fields and electron pitch angle distributions on electron impact ionization

    Robert J. Lillis;Matthew O. Fillingim;Laura M. Peticolas;David A. Brain

  • Observations of the nightside ionosphere of Mars by the Mars Express Radio Science Experiment (MaRS)

    Paul Withers;M. O. Fillingim;R. J. Lillis;B. Häusler

  • Large impact crater histories of Mars: The effect of different model crater age techniques

    Stuart J. Robbins;Brian M. Hynek;Robert J. Lillis;William F. Bottke

  • MAVEN observations of the solar cycle 24 space weather conditions at Mars

    C. O. Lee;T. Hara;J. S. Halekas;E. Thiemann

Frequent Co-Authors

Jasper Halekas
Jasper Halekas University of Iowa
Janet G. Luhmann
Janet G. Luhmann University of California, Berkeley
David A. Brain
David A. Brain University of Colorado Boulder
Bruce M. Jakosky
Bruce M. Jakosky University of Colorado Boulder
John E. P. Connerney
John E. P. Connerney Goddard Space Flight Center
Stephen W. Bougher
Stephen W. Bougher University of Michigan–Ann Arbor
Jared Espley
Jared Espley Goddard Space Flight Center
David L. Mitchell
David L. Mitchell University of California, Berkeley
Michael Manga
Michael Manga University of California, Berkeley
Christian Mazelle
Christian Mazelle Centre national de la recherche scientifique, CNRS

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