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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 85 757 720 321 297 306 23550

Kevin Zahnle publications per year

The chart shows the history of publications by Kevin Zahnle between 1982 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kevin Zahnle published across 44 years, from 1982 to 2025, averaging 7.6 papers a year. Output peaked at 23 publications in 2009. 12 of the 335 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1982 to 2025. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 2009. 1982: 1 publication 1983: 1 publication 1984: 0 publications 1985: 0 publications 1986: 5 publications 1987: 3 publications 1988: 2 publications 1989: 3 publications 1990: 5 publications 1991: 0 publications 1992: 6 publications 1993: 4 publications 1994: 10 publications 1995: 12 publications 1996: 7 publications 1997: 3 publications 1998: 6 publications 1999: 5 publications 2000: 6 publications 2001: 12 publications 2002: 4 publications 2003: 4 publications 2004: 7 publications 2005: 6 publications 2006: 10 publications 2007: 7 publications 2008: 11 publications 2009: 23 publications 2010: 12 publications 2011: 17 publications 2012: 9 publications 2013: 21 publications 2014: 18 publications 2015: 14 publications 2016: 14 publications 2017: 10 publications 2018: 12 publications 2019: 12 publications 2020: 8 publications 2021: 2 publications 2022: 5 publications 2023: 6 publications 2024: 7 publications 2025: 5 publications
1982 2025

335 publications in total across all disciplines

View publications per year as a table
Kevin Zahnle: publications per year, 1982 to 2025
Year Publications
1982 1
1983 1
1984 0
1985 0
1986 5
1987 3
1988 2
1989 3
1990 5
1991 0
1992 6
1993 4
1994 10
1995 12
1996 7
1997 3
1998 6
1999 5
2000 6
2001 12
2002 4
2003 4
2004 7
2005 6
2006 10
2007 7
2008 11
2009 23
2010 12
2011 17
2012 9
2013 21
2014 18
2015 14
2016 14
2017 10
2018 12
2019 12
2020 8
2021 2
2022 5
2023 6
2024 7
2025 5
Total 335
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Kevin Zahnle 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 Kevin Zahnle 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, 301–310 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: 306 publications — 87th percentile

87% 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
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130 306
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
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Kevin Zahnle 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 Kevin Zahnle 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, 85 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: 85 D-Index — 92nd percentile

92% 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
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43 85
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
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Research.com Recognitions

  • 2011 - Fellow of American Geophysical Union (AGU)

Overview

Kevin Zahnle is affiliated with the Ames Research Center in the United States and works primarily within the fields of Physics and Astronomy. Their research spans various subfields, including Astronomy and Astrophysics, Atmospheric Science, Ecology, Paleontology, and Oceanography.

The main topics covered in their work include:

  • Astro and Planetary Science
  • Planetary Science and Exploration
  • Geology and Paleoclimatology Research
  • Stellar, planetary, and galactic studies
  • Isotope Analysis in Ecology
  • Astrophysics and Star Formation Studies
  • Atmospheric Ozone and Climate

Zahnle's publication record includes contributions to a variety of scientific journals, with frequent publications in:

  • The Planetary Science Journal
  • arXiv (Cornell University)
  • The Astrophysical Journal Letters
  • Science Advances
  • Proceedings of the National Academy of Sciences

Notable recent papers authored or co-authored by Zahnle include:

  • "The Archean atmosphere" (2020, Science Advances)
  • "Revealing the Mysteries of Venus: The DAVINCI Mission" (2022, The Planetary Science Journal)
  • "JWST Observations of K2-18b Can Be Explained by a Gas-rich Mini-Neptune with No Habitable Surface" (2024, The Astrophysical Journal Letters)
  • "Origin-of-life Molecules in the Atmosphere after Big Impacts on the Early Earth" (2023, The Planetary Science Journal)
  • "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)

Their frequent co-authors include Nicholas F. Wogan, David C. Catling, Natasha E. Batalha, Shang-Min Tsai, and Joshua Krissansen-Totton, indicating collaborative research efforts across the planetary sciences and related disciplines.

In recognition of their contributions, Kevin Zahnle was named a Fellow of the American Geophysical Union (AGU) in 2011.

Best Publications

  • Cratering Rates in the Outer Solar System

    Kevin Zahnle;Paul Schenk;Harold Levison;Luke Dones

  • The 1908 Tunguska explosion - Atmospheric disruption of a stony asteroid

    Christopher F. Chyba;Christopher F. Chyba;Paul J. Thomas;Kevin J. Zahnle

  • Annihilation of ecosystems by large asteroid impacts on the early Earth

    Norman H. Sleep;Kevin J. Zahnle;James F. Kasting;Harold J. Morowitz

  • Carbon dioxide cycling and implications for climate on ancient Earth

    Norman H. Sleep;Kevin Zahnle

  • Biogenic methane, hydrogen escape, and the irreversible oxidation of early Earth.

    David C. Catling;David C. Catling;Kevin J. Zahnle;Christopher P. McKay

  • Oceanic nickel depletion and a methanogen famine before the Great Oxidation Event

    Kurt O. Konhauser;Ernesto Pecoits;Stefan V. Lalonde;Dominic Papineau

  • Environmental Perturbations Caused by the Impacts of Asteroids and Comets

    Owen B. Toon;Kevin Zahnle;David Morrison;Richard P. Turco

  • The Archean atmosphere

    David C. Catling;Kevin J. Zahnle

  • Emergence of a habitable planet

    Kevin Zahnle;Nick Arndt;Charles Cockell;Alex Halliday

  • Evolution of a steam atmosphere during earth's accretion

    Kevin J. Zahnle;James F. Kasting;James B. Pollack

  • Photochemistry of methane and the formation of hydrocyanic acid (HCN) in the Earth's early atmosphere

    Kevin J. Zahnle

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

    KJ Zahnle;MW Claire;DC Catling;DC Catling

  • QUANTITATIVELY ASSESSING THE ROLE OF CLOUDS IN THE TRANSMISSION SPECTRUM OF GJ 1214b

    Caroline V. Morley;Jonathan J. Fortney;Eliza M.-R. Kempton;Mark S. Marley

  • Why O2 is required by complex life on habitable planets and the concept of planetary "oxygenation time".

    David C. Catling;Christopher R. Glein;Kevin J. Zahnle;Christopher P. McKay

  • 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

  • The evolution of solar ultraviolet luminosity

    Kevin J. Zahnle;James C. G. Walker

  • Environmental Effects of Large Impacts on Mars

    Teresa L. Segura;Owen B. Toon;Anthony Colaprete;Kevin Zahnle

  • Earth’s Earliest Atmospheres

    Kevin Zahnle;Laura Schaefer;Bruce Fegley

  • Habitable Zone Limits for Dry Planets

    Yutaka Abe;Ayako Abe-Ouchi;Norman H. Sleep;Kevin J. Zahnle

  • Thermal Emission and Albedo Spectra of Super Earths with Flat Transmission Spectra

    Caroline V. Morley;Jonathan J. Fortney;Mark S. Marley;Kevin Zahnle

  • Cratering rates on the Galilean satellites.

    Kevin Zahnle;Luke Dones;Harold F Levison

  • Cratering rates in the outer solar system.

    K. J. Zahnle;H. F. Levison;L. Dones;P. M. Schenk

Frequent Co-Authors

David C. Catling
David C. Catling University of Washington
Norman H. Sleep
Norman H. Sleep Stanford University
Mark W. Claire
Mark W. Claire University of St Andrews
Mark S. Marley
Mark S. Marley University of Arizona
Jonathan J. Fortney
Jonathan J. Fortney University of California, Santa Cruz
James F. Kasting
James F. Kasting Pennsylvania State University
David Crisp
David Crisp California Institute of Technology
Sushil K. Atreya
Sushil K. Atreya University of Michigan–Ann Arbor
Christopher P. McKay
Christopher P. McKay Ames Research Center
Mordecai-Mark Mac Low
Mordecai-Mark Mac Low American Museum of Natural History

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