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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 5778 5345 284 256 146 6717

Risto Pirjola publications per year

The chart shows the history of publications by Risto Pirjola between 1976 and 2023, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Risto Pirjola published across 48 years, from 1976 to 2023, averaging 3.3 papers a year. Output peaked at 10 publications in 1998. 3 of the 156 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1976 to 2023. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 1998. 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 1 publication 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 1 publication 1984: 0 publications 1985: 1 publication 1986: 1 publication 1987: 0 publications 1988: 0 publications 1989: 3 publications 1990: 1 publication 1991: 4 publications 1992: 1 publication 1993: 2 publications 1994: 2 publications 1995: 2 publications 1996: 2 publications 1997: 3 publications 1998: 10 publications 1999: 4 publications 2000: 8 publications 2001: 6 publications 2002: 9 publications 2003: 7 publications 2004: 6 publications 2005: 6 publications 2006: 3 publications 2007: 9 publications 2008: 8 publications 2009: 10 publications 2010: 5 publications 2011: 3 publications 2012: 4 publications 2013: 9 publications 2014: 5 publications 2015: 4 publications 2016: 1 publication 2017: 6 publications 2018: 0 publications 2019: 2 publications 2020: 1 publication 2021: 2 publications 2022: 2 publications 2023: 1 publication
1976 2023

156 publications in total across all disciplines

View publications per year as a table
Risto Pirjola: publications per year, 1976 to 2023
Year Publications
1976 1
1977 0
1978 0
1979 1
1980 0
1981 0
1982 0
1983 1
1984 0
1985 1
1986 1
1987 0
1988 0
1989 3
1990 1
1991 4
1992 1
1993 2
1994 2
1995 2
1996 2
1997 3
1998 10
1999 4
2000 8
2001 6
2002 9
2003 7
2004 6
2005 6
2006 3
2007 9
2008 8
2009 10
2010 5
2011 3
2012 4
2013 9
2014 5
2015 4
2016 1
2017 6
2018 0
2019 2
2020 1
2021 2
2022 2
2023 1
Total 156
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Risto Pirjola 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 Risto Pirjola 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, 138–147 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: 146 publications — 37th percentile

37% 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
138–147 491 146
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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Risto Pirjola 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 Risto Pirjola 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

Risto Pirjola is affiliated with Natural Resources Canada and contributes to the fields of Earth and Planetary Sciences as well as Engineering. Their research focuses substantially on geophysics, electrical and electronic engineering, astronomy and astrophysics, and ocean engineering. The scientist's main areas of investigation include geophysical and geoelectrical methods, electromagnetic simulation and numerical methods, seismic waves and analysis, earthquake detection and analysis, lightning and electromagnetic phenomena, and general geophysical methods and applications.

Their recent published papers reflect a concentration on geomagnetically induced currents and related geophysical phenomena. Key publications include:

  • The Lehtinen-Pirjola method modified for efficient modelling of geomagnetically induced currents in multiple voltage levels of a power network (2022, Annales Geophysicae)
  • Distributed-Source Transmission Line Theory for Modeling the Coast Effect on Geoelectric Fields (2023, IEEE Transactions on Power Delivery)
  • The influence of the coast effect on geomagnetically induced currents: A modeling study (2021, 2021 IEEE Power & Energy Society General Meeting [PESGM])
  • Electric field calculations for real-time space weather alerting systems (2022, Geophysical Journal International)

Frequent co-authors in their research include:

  • D. H. Boteler
  • Loughlin Tuck
  • Santiago Marsal
  • Xuan Wang

The venues where this scientist regularly publishes are:

  • Annales Geophysicae
  • IEEE Transactions on Power Delivery
  • 2021 IEEE Power & Energy Society General Meeting (PESGM)
  • Geophysical Journal International

Best Publications

  • The effects of geomagnetic disturbances on electrical systems at the earth's surface

    D.H. Boteler;R.J. Pirjola;R.J. Pirjola;H. Nevanlinna

  • Geomagnetic storm of 29–31 October 2003: Geomagnetically induced currents and their relation to problems in the Swedish high-voltage power transmission system

    Antti Pulkkinen;Sture Lindahl;Ari Viljanen;Risto Pirjola

  • Geomagnetically induced currents: Science, engineering, and applications readiness

    Antti Pulkkinen;E. Bernabeu;A. Thomson;A. Viljanen

  • Geomagnetically induced currents in the Finnish high-voltage power system

    A. Viljanen;R. Pirjola

  • Review On The Calculation Of Surface Electric And Magnetic Fields And Of Geomagnetically Induced Currents In Ground-Based Technological Systems

    Risto Pirjola

  • Space weather events in July 1982 and October 2003 and the effects of geomagnetically induced currents on Swedish technical systems

    Magnus Wik;Magnus Wik;R. Pirjola;Henrik Lundstedt;A. Viljanen

  • The complex-image method for calculating the magnetic and electric fields produced at the surface of the Earth by the auroral electrojet

    D. H. Boteler;R. J. Pirjola

  • Modeling geomagnetically induced currents

    Unknown

  • Calculation of geomagnetically induced currents in the 400 kV power grid in southern Sweden

    Magnus Wik;Magnus Wik;A. Viljanen;R. Pirjola;A. Pulkkinen;A. Pulkkinen

  • Geomagnetically Induced Currents in the High-Voltage Power Grid in China

    Unknown

  • Recordings of geomagnetically induced currents and a nowcasting service of the Finnish natural gas pipeline system

    A. Viljanen;A. Pulkkinen;A. Pulkkinen;R. Pirjola;R. Pirjola;K. Pajunpää

  • Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models

    A. Viljanen;A. Pulkkinen;O. Amm;R. Pirjola

  • Recordings and occurrence of geomagnetically induced currents in the Finnish natural gas pipeline network

    Antti Pulkkinen;Ari Viljanen;Kari Pajunpää;Risto Pirjola

  • Complex image method for calculating electric and magnetic fields produced by an auroral electrojet of finite length

    R. Pirjola;A. Viljanen

  • Modelling geomagnetically induced currents produced by realistic and uniform electric fields

    Unknown

  • Modelling of space weather effects on pipelines

    Antti Pulkkinen;Risto Pirjola;David Boteler;Ari Viljanen

  • Geomagnetically induced currents in an electric power transmission system at low latitudes in Brazil: A case study

    Nalin B. Trivedi;Ícaro Vitorello;Wanderli Kabata;Severino L. G. Dutra

  • Calculation of geomagnetically induced currents in mid- to low-latitude power grids based on the plane wave method: A preliminary case study

    Chun-Ming Liu;Lian-Guang Liu;Risto Pirjola;Ze-Zhong Wang

  • Effects of space weather on high-latitude ground systems

    Risto Pirjola

  • Space weather risk

    Risto Pirjola;Kirsti Kauristie;Hanna Lappalainen;Ari Viljanen

  • At substorm onset, 40% of AL comes from underground

    Eija Tanskanen;A Viljanen;Tuija Pulkkinen;R Pirjola

  • Modeling geomagnetically induced currents during different ionospheric situations

    Ari Viljanen;Olaf Amm;Risto Pirjola

  • The Effects of Geomagnetic Disturbances on Electrical Systems at the Earth's Surface - An Update

    David Boteler;Risto Pirjola;Heikki Nevanlinna

Frequent Co-Authors

Ari Viljanen
Ari Viljanen Finnish Meteorological Institute
Antti Pulkkinen
Antti Pulkkinen Goddard Space Flight Center
Tuija Pulkkinen
Tuija Pulkkinen University of Michigan–Ann Arbor
Jean-Pierre Pommereau
Jean-Pierre Pommereau Centre national de la recherche scientifique, CNRS
Ismo V. Lindell
Ismo V. Lindell Aalto University
Erling Nielsen
Erling Nielsen Max Planck Society
Christopher P. McKay
Christopher P. McKay Ames Research Center
Ioannis A. Daglis
Ioannis A. Daglis National and Kapodistrian University of Athens
Giovanni Picardi
Giovanni Picardi Sapienza University of Rome
William J. Borucki
William J. Borucki Ames Research Center

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