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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 40 5946 5505 634 595 110 4802

John M. Holt publications per year

The chart shows the history of publications by John M. Holt between 1963 and 2018, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John M. Holt published across 56 years, from 1963 to 2018, averaging 2.5 papers a year. Output peaked at 10 publications in 1983. 2 of the 138 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1963 to 2018. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 1983. 1963: 1 publication 1964: 0 publications 1965: 1 publication 1966: 0 publications 1967: 0 publications 1968: 3 publications 1969: 0 publications 1970: 1 publication 1971: 1 publication 1972: 0 publications 1973: 1 publication 1974: 5 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 1 publication 1979: 2 publications 1980: 2 publications 1981: 2 publications 1982: 1 publication 1983: 10 publications 1984: 6 publications 1985: 3 publications 1986: 6 publications 1987: 2 publications 1988: 2 publications 1989: 3 publications 1990: 5 publications 1991: 0 publications 1992: 2 publications 1993: 0 publications 1994: 1 publication 1995: 3 publications 1996: 0 publications 1997: 1 publication 1998: 0 publications 1999: 0 publications 2000: 5 publications 2001: 8 publications 2002: 7 publications 2003: 4 publications 2004: 8 publications 2005: 9 publications 2006: 4 publications 2007: 7 publications 2008: 4 publications 2009: 2 publications 2010: 1 publication 2011: 2 publications 2012: 2 publications 2013: 1 publication 2014: 1 publication 2015: 4 publications 2016: 2 publications 2017: 1 publication 2018: 1 publication
1963 2018

138 publications in total across all disciplines

View publications per year as a table
John M. Holt: publications per year, 1963 to 2018
Year Publications
1963 1
1964 0
1965 1
1966 0
1967 0
1968 3
1969 0
1970 1
1971 1
1972 0
1973 1
1974 5
1975 0
1976 0
1977 0
1978 1
1979 2
1980 2
1981 2
1982 1
1983 10
1984 6
1985 3
1986 6
1987 2
1988 2
1989 3
1990 5
1991 0
1992 2
1993 0
1994 1
1995 3
1996 0
1997 1
1998 0
1999 0
2000 5
2001 8
2002 7
2003 4
2004 8
2005 9
2006 4
2007 7
2008 4
2009 2
2010 1
2011 2
2012 2
2013 1
2014 1
2015 4
2016 2
2017 1
2018 1
Total 138
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John M. Holt 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 John M. Holt 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, 108–117 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: 110 publications — 16th percentile

16% 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
108–117 484 110
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
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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John M. Holt 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 John M. Holt 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, 40 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: 40 D-Index — 38th percentile

38% 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 40
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
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

What is he best known for?

The fields of study he is best known for:

  • Ionosphere
  • Astronomy
  • Meteorology

John M. Holt mostly deals with Incoherent scatter, Ionosphere, Millstone Hill, Atmospheric sciences and Geophysics. His Incoherent scatter research integrates issues from Meteorology, Convection, Latitude and F region. The Ionosphere study combines topics in areas such as Interplanetary magnetic field and Ionosonde.

John M. Holt usually deals with Millstone Hill and limits it to topics linked to Geodesy and Remote sensing. His study in Atmospheric sciences focuses on Middle latitudes in particular. Many of his research projects under Geophysics are closely connected to Electric potential with Electric potential, tying the diverse disciplines of science together.

His most cited work include:

  • Ionospheric convection associated with discrete levels of particle precipitation (263 citations)
  • Comparison of COSMIC ionospheric measurements with ground-based observations and model predictions : Preliminary results (238 citations)
  • Multiradar observations of the polar tongue of ionization (224 citations)

What are the main themes of his work throughout his whole career to date?

John M. Holt spends much of his time researching Ionosphere, Millstone Hill, Incoherent scatter, Atmospheric sciences and Geophysics. His studies deal with areas such as Meteorology and Latitude as well as Ionosphere. His Millstone Hill study combines topics from a wide range of disciplines, such as Earth's magnetic field, Convection and Noon.

John M. Holt studied Incoherent scatter and Remote sensing that intersect with Universal Time. His Atmospheric sciences research includes elements of Climatology and Altitude. His Geophysics research focuses on subjects like Geomagnetic storm, which are linked to Total electron content.

He most often published in these fields:

  • Ionosphere (72.07%)
  • Millstone Hill (67.57%)
  • Incoherent scatter (61.26%)

What were the highlights of his more recent work (between 2008-2018)?

  • Ionosphere (72.07%)
  • Atmospheric sciences (47.75%)
  • Millstone Hill (67.57%)

In recent papers he was focusing on the following fields of study:

John M. Holt mainly investigates Ionosphere, Atmospheric sciences, Millstone Hill, Environmental science and Incoherent scatter. Ionosphere is a subfield of Geophysics that John M. Holt explores. In his research, Solar minimum, Storm, Daytime, Amplitude and Morning is intimately related to Thermosphere, which falls under the overarching field of Atmospheric sciences.

The study incorporates disciplines such as Climatology and Earth's magnetic field in addition to Millstone Hill. His Incoherent scatter study deals with Latitude intersecting with Polar and Dipole model of the Earth's magnetic field. John M. Holt interconnects Electron temperature and Atmospheric temperature in the investigation of issues within Noon.

Between 2008 and 2018, his most popular works were:

  • Magnetic declination and zonal wind effects on longitudinal differences of ionospheric electron density at midlatitudes (54 citations)
  • Millstone Hill ISR observations of upper atmospheric long-term changes: Height dependency (44 citations)
  • Thermospheric poleward wind surge at midlatitudes during great storm intervals (42 citations)

In his most recent research, the most cited papers focused on:

  • Astronomy
  • Ionosphere
  • Meteorology

His scientific interests lie mostly in Environmental science, Ionosphere, Atmospheric sciences, Millstone Hill and Incoherent scatter. His Earth's magnetic field research extends to Ionosphere, which is thematically connected. His biological study spans a wide range of topics, including Solar cycle, Daytime, Longitude and Electron density.

John M. Holt has researched Incoherent scatter in several fields, including Atmosphere and Climatology. His study in Noon is interdisciplinary in nature, drawing from both Electron temperature, Atmospheric temperature, Solar minimum and Thermosphere. His F region research incorporates themes from Dipole model of the Earth's magnetic field, Latitude and Altitude.

Best Publications

  • Comparison of COSMIC ionospheric measurements with ground-based observations and model predictions : Preliminary results

    Jiuhou Lei;Stig Syndergaard;Alan G. Burns;Stanley C. Solomon

  • Ionospheric convection associated with discrete levels of particle precipitation

    J. C. Foster;J. M. Holt;R. G. Musgrove;D. S. Evans

  • Multiradar observations of the polar tongue of ionization

    J. C. Foster;A. J. Coster;P. J. Erickson;J. M. Holt

  • On the latitudinal variations of the ionospheric electric field during magnetospheric disturbances

    C. A. Gonzales;M. C. Kelley;R. A. Behnke;J. F. Vickrey

  • Observations of the May 30, 1984, annular solar eclipse at Millstone Hill

    J. E. Salah;W. L. Oliver;J. C. Foster;J. M. Holt

  • Electric field variability associated with the Millstone Hill electric field model

    M. V. Codrescu;T. J. Fuller-Rowell;J. C. Foster;J. M. Holt

  • Millstone hill incoherent scatter observations of auroral convection over 60° ≤Λ ≤75° 2. Initial results

    J.V. Evans;J.M. Holt;W.L. Oliver;R.H. Wand

  • Global measures of ionospheric electrodynamic activity inferred from combined incoherent scatter radar and ground magnetometer observations

    A. D. Richmond;Y. Kamide;S.-I. Akasofu;D. Alcaydé

  • Mapping electrodynamic features of the high-latitude ionosphere from localized observations: Combined incoherent-scatter radar and magnetometer measurements for January 18-19, 1984

    A. D. Richmond;Y. Kamide;B. H. Ahn;S. I. Akasofu

  • Optimal analysis of incoherent scatter radar data

    J. M. Holt;D. A. Rhoda;D. Tetenbaum;A. P. van Eyken

  • Empirical models for the plasma convection at high latitudes from Millstone Hill observations

    J. M. Holt;R. H. Wand;J. V. Evans;W. L. Oliver

  • Magnetic declination and zonal wind effects on longitudinal differences of ionospheric electron density at midlatitudes

    Shun-Rong Zhang;John C. Foster;John M. Holt;Philip J. Erickson

  • A differential-Doppler study of traveling ionospheric disturbances from Millstone Hill

    J. V. Evans;J. M. Holt;R. H. Wand

  • On the relative importance of convection and temperature to the behavior of the ionosphere in North America during January 6–12, 1997

    P. G. Richards;M. J. Buonsanto;B. W. Reinisch;J. Holt

  • Ionospheric local model and climatology from long-term databases of multiple incoherent scatter radars

    Shun-Rong Zhang;John M. Holt;Anthony P. van Eyken;Mary McCready

  • Thermospheric poleward wind surge at midlatitudes during great storm intervals

    Shun Rong Zhang;Philip J. Erickson;John C. Foster;John M. Holt

  • Midlatitude ionospheric plasma temperature climatology and empirical model based on Saint Santin incoherent scatter radar data from 1966 to 1987

    Shun-Rong Zhang;John M. Holt;Angela M. Zalucha;Christine Amory-Mazaudier

  • Millstone Hill ISR observations of upper atmospheric long-term changes: Height dependency

    Shun-Rong Zhang;John M. Holt;James Kurdzo

  • Radar and optical measurements of ionospheric processes associated with intense subauroral electric fields

    James F. Providakes;Michael C. Kelley;Wesley E. Swartz;Michael Mendillo

  • Russian-American tomography experiment

    J. C. Foster;M. J. Buonsanto;J. M. Holt;J. A. Klobuchar

  • Observations of ion-neutral coupling associated with strong electrodynamic disturbances during the 2015 St. Patrick's Day storm†

    Shun‐Rong Zhang;Philip J Erickson;Yongliang Zhang;Wenbin Wang

Frequent Co-Authors

O. de la Beaujardiere
O. de la Beaujardiere SRI International
David S. Evans
David S. Evans National Oceanic and Atmospheric Administration
Shoichiro Fukao
Shoichiro Fukao Kyoto University
Robert W. Schunk
Robert W. Schunk Utah State University
Michael P. Sulzer
Michael P. Sulzer Arecibo Observatory
Jan Josef Sojka
Jan Josef Sojka Utah State University

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