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
Earth Science 91 239 202 128 107 388 48623

Raymond S. Bradley publications per year

The chart shows the history of publications by Raymond S. Bradley between 1950 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Raymond S. Bradley published across 76 years, from 1950 to 2025, averaging 5.9 papers a year. Output peaked at 31 publications in 2015. 9 of the 451 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1950 to 2025. Vertical axis: number of publications, 0 to 31. Peak 31 publications in 2015. 1950: 1 publication 1951: 0 publications 1952: 0 publications 1953: 0 publications 1954: 0 publications 1955: 0 publications 1956: 1 publication 1957: 1 publication 1958: 0 publications 1959: 0 publications 1960: 1 publication 1961: 0 publications 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 3 publications 1973: 3 publications 1974: 1 publication 1975: 2 publications 1976: 4 publications 1977: 2 publications 1978: 5 publications 1979: 1 publication 1980: 1 publication 1981: 1 publication 1982: 0 publications 1983: 2 publications 1984: 3 publications 1985: 8 publications 1986: 4 publications 1987: 10 publications 1988: 1 publication 1989: 8 publications 1990: 4 publications 1991: 5 publications 1992: 10 publications 1993: 5 publications 1994: 5 publications 1995: 6 publications 1996: 7 publications 1997: 10 publications 1998: 5 publications 1999: 3 publications 2000: 16 publications 2001: 13 publications 2002: 9 publications 2003: 21 publications 2004: 13 publications 2005: 12 publications 2006: 12 publications 2007: 8 publications 2008: 17 publications 2009: 21 publications 2010: 12 publications 2011: 12 publications 2012: 13 publications 2013: 6 publications 2014: 11 publications 2015: 31 publications 2016: 27 publications 2017: 17 publications 2018: 16 publications 2019: 10 publications 2020: 11 publications 2021: 4 publications 2022: 6 publications 2023: 1 publication 2024: 3 publications 2025: 6 publications
1950 2025

451 publications in total across all disciplines

View publications per year as a table
Raymond S. Bradley: publications per year, 1950 to 2025
Year Publications
1950 1
1951 0
1952 0
1953 0
1954 0
1955 0
1956 1
1957 1
1958 0
1959 0
1960 1
1961 0
1962 0
1963 0
1964 0
1965 0
1966 0
1967 0
1968 0
1969 0
1970 0
1971 0
1972 3
1973 3
1974 1
1975 2
1976 4
1977 2
1978 5
1979 1
1980 1
1981 1
1982 0
1983 2
1984 3
1985 8
1986 4
1987 10
1988 1
1989 8
1990 4
1991 5
1992 10
1993 5
1994 5
1995 6
1996 7
1997 10
1998 5
1999 3
2000 16
2001 13
2002 9
2003 21
2004 13
2005 12
2006 12
2007 8
2008 17
2009 21
2010 12
2011 12
2012 13
2013 6
2014 11
2015 31
2016 27
2017 17
2018 16
2019 10
2020 11
2021 4
2022 6
2023 1
2024 3
2025 6
Total 451
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Raymond S. Bradley 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 Raymond S. Bradley 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, 388–397 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: 388 publications — 94th percentile

94% 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
378–387 34
388–397 50 388
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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Raymond S. Bradley 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 Raymond S. Bradley 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, 91 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: 91 D-Index — 97th percentile

97% 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
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 91
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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Research.com Recognitions

  • 2019 - Fellow of the Royal Society of Canada Academy of Science
  • 2016 - Member of Academia Europaea
  • 2009 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 2005 - Fellow of American Geophysical Union (AGU)

Overview

Raymond S. Bradley is affiliated with the University of Massachusetts Amherst in the United States. Their research primarily focuses on Earth and Planetary Sciences, with a particular emphasis on Atmospheric Science, Ecology, Paleontology, Oceanography, and Environmental Chemistry.

Their work covers several main research topics, including:

  • Geology and Paleoclimatology Research
  • Methane Hydrates and Related Phenomena
  • Climate Change and Permafrost
  • Archaeology and Ancient Environmental Studies
  • Isotope Analysis in Ecology
  • Marine and Environmental Studies
  • Cryospheric Studies and Observations

Frequent co-authors in their published work include:

  • Boyang Zhao
  • Isla S. Castañeda
  • Tobias Schneider
  • W. J. D'Andrea
  • François Lapointe

Their research has appeared in a variety of scientific venues, with repeated publications in:

  • Abstracts with programs - Geological Society of America
  • Proceedings of the National Academy of Sciences
  • Communications Earth & Environment
  • Science Advances
  • Organic Geochemistry

Recent papers include:

  • "Annually resolved Atlantic sea surface temperature variability over the past 2,900 y" (2020), Proceedings of the National Academy of Sciences
  • "Asian inland wildfires driven by glacial-interglacial climate change" (2020), Proceedings of the National Academy of Sciences
  • "Development of an in situ branched GDGT calibration in Lake 578, southern Greenland" (2020), Organic Geochemistry
  • "Sedimentary DNA and molecular evidence for early human occupation of the Faroe Islands" (2021), Communications Earth & Environment
  • "Droughts and societal change: The environmental context for the emergence of Islam in late Antique Arabia" (2022), Science

Among distinctions received, they were recognized as a Fellow of the Royal Society of Canada in 2019, a Member of Academia Europaea since 2016, a Fellow of the American Association for the Advancement of Science (AAAS) since 2009, and a Fellow of the American Geophysical Union (AGU) since 2005.

Best Publications

  • Tree Rings and Climate

    Raymond S. Bradley;H. C. Fritts

  • Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly

    Michael E. Mann;Zhihua Zhang;Scott Rutherford;Raymond S. Bradley

  • Global-scale temperature patterns and climate forcing over the past six centuries

    Michael E. Mann;Raymond S. Bradley;Malcolm K. Hughes

  • Elevation-dependent warming in mountain regions of the world

    N. Pepin;R. S. Bradley;H. F. Diaz;M. Baraer

  • Northern Hemisphere Temperatures During the Past Millennium: Inferences, Uncertainties, and Limitations

    Michael E. Mann;Raymond S. Bradley;Malcolm K. Hughes

  • Paleoclimatology: Reconstructing Climates of the Quaternary

    Raymond S. Bradley

  • Reconstruction of solar irradiance since 1610: Implications for climate change

    Judith Lean;Juerg Beer;Raymond S. Bradley

  • Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia

    Michael E. Mann;Zhihua Zhang;Malcolm K. Hughes;Raymond S. Bradley

  • Arctic Environmental Change of the Last Four Centuries

    J. Overpeck;K. Hughen;D. Hardy;R. Bradley

  • Threats to Water Supplies in the Tropical Andes

    Raymond S. Bradley;Mathias Vuille;Henry F. Diaz;Walter Vergara

  • 'Little Ice Age' summer temperature variations: their nature and relevance to recent global warming trends:

    Raymond S. Bradley;Philip D. Jonest

  • Climatic Change at High Elevation Sites: An Overview

    M. Beniston;H. F. Diaz;R. S. Bradley

  • Climate change and tropical Andean glaciers: Past, present and future

    Mathias Vuille;Mathias Vuille;Bernard Francou;Patrick Wagnon;Irmgard Juen

  • Recent Warming Reverses Long-Term Arctic Cooling

    Darrell S. Kaufman;David P. Schneider;Nicholas P. McKay;Caspar M. Ammann

  • What Drives Societal Collapse

    Harvey Weiss;Raymond S. Bradley

  • Toward mountains without permanent snow and ice

    Matthias Huss;Matthias Huss;B Bookhagen;Christian Huggel;Dean Jacobsen

  • Climate in Medieval Time

    Raymond S. Bradley;Malcolm K. Hughes;Henry F. Diaz

  • 20Th century climate change in the tropical Andes: Observations and model results

    Mathias Vuille;Raymond S. Bradley;Martin Werner;Frank Keimig

  • Precipitation Fluctuations over Northern Hemisphere Land Areas Since the Mid-19th Century.

    R. S. Bradley;H. F. Diaz;J. K. Eischeid;P. D. Jones

  • TEMPERATURE VARIATIONS DURING THE LAST CENTURY AT HIGH ELEVATION SITES

    Henry F. Diaz;Raymond S. Bradley

  • Interannual climate variability in the Central Andes and its relation to tropical Pacific and Atlantic forcing

    Mathias Vuille;Raymond S. Bradley;Frank Keimig

Frequent Co-Authors

Pierre Francus
Pierre Francus Institut National de la Recherche Scientifique
Henry F. Diaz
Henry F. Diaz University of Hawaii at Manoa
Jostein Bakke
Jostein Bakke University of Bergen
Mathias Vuille
Mathias Vuille University at Albany, State University of New York
Philip Jones
Philip Jones University of East Anglia
Malcolm K. Hughes
Malcolm K. Hughes University of Arizona
Michael E. Mann
Michael E. Mann Pennsylvania State University
Keith R. Briffa
Keith R. Briffa University of East Anglia
Mark B. Abbott
Mark B. Abbott University of Pittsburgh
Gifford H. Miller
Gifford H. Miller University of Colorado Boulder

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