World's Best Scientists 2026 revealed!
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Earth Science
Finland
2025

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 50 3486 3195 4 4 156 7445

Ari Viljanen publications per year

The chart shows the history of publications by Ari Viljanen between 1989 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ari Viljanen published across 37 years, from 1989 to 2025, averaging 5.4 papers a year. Output peaked at 14 publications in 2022. 11 of the 198 publications appeared in the last two years.

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

198 publications in total across all disciplines

View publications per year as a table
Ari Viljanen: publications per year, 1989 to 2025
Year Publications
1989 3
1990 1
1991 3
1992 0
1993 2
1994 3
1995 3
1996 1
1997 2
1998 4
1999 5
2000 7
2001 10
2002 9
2003 8
2004 6
2005 6
2006 6
2007 7
2008 5
2009 7
2010 4
2011 7
2012 2
2013 7
2014 7
2015 7
2016 4
2017 8
2018 2
2019 2
2020 9
2021 5
2022 14
2023 11
2024 8
2025 3
Total 198
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Ari Viljanen 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 Ari Viljanen 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, 148–157 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: 156 publications — 42nd percentile

42% 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
148–157 495 156
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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Ari Viljanen 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 Ari Viljanen 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, 50 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: 50 D-Index — 64th percentile

64% 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 50
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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Research.com Recognitions

  • 2025 - Research.com Earth Science in Finland Leader Award
  • 2023 - Research.com Earth Science in Finland Leader Award
  • 2022 - Research.com Earth Science in Finland Leader Award

Overview

Ari Viljanen is affiliated with the Finnish Meteorological Institute in Finland and has made contributions across multiple intersecting scientific fields, primarily focusing on Earth and planetary sciences, physics and astronomy, and biochemistry, genetics, and molecular biology. Their research spans geophysics, astronomy and astrophysics, molecular biology, global and planetary change, and atmospheric science.

The scientist's main topical areas of work include earthquake detection and analysis, ionosphere and magnetosphere dynamics, geomagnetism and paleomagnetism studies, solar and space plasma dynamics, geophysical and geoelectrical methods, seismic waves and analysis, as well as atmospheric aerosols and clouds.

Recent notable publications by Ari Viljanen include:

  • "Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents," 2020, Geophysical Research Letters
  • "On the Regional Variability of dB/dt and Its Significance to GIC," 2020, Space Weather
  • "Induced currents due to 3D ground conductivity play a major role in the interpretation of geomagnetic variations," 2020, Annales Geophysicae
  • "Citizen Scientists Discover a New Auroral Form: Dunes Provide Insight Into the Upper Atmosphere," 2020, AGU Advances
  • "Modeling the Geomagnetic Response to the September 2017 Space Weather Event Over Fennoscandia Using the Space Weather Modeling Framework: Studying the Impacts of Spatial Resolution," 2021, Space Weather

Frequent coauthors contributing to Ari Viljanen's research include Liisa Juusola, A. P. Dimmock, Elena Marshalko, Mikhail Kruglyakov, and L. Rosenqvist. These collaborations have supported work published primarily in venues such as Space Weather, Annales Geophysicae, Zenodo (CERN European Organization for Nuclear Research), Geophysical Research Letters, and AGU Advances.

Ari Viljanen's publishing record shows a strong focus on journals dedicated to space weather and geophysical phenomena, with multiple contributions to Space Weather and Annales Geophysicae. Their work integrates observational and modeling approaches to study geomagnetic variations and their associated impacts.

Best Publications

  • Ionospheric disturbance magnetic field continuation from the ground to the ionosphere using spherical elementary current systems

    O. Amm;A. Viljanen

  • 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

  • Time derivative of the horizontal geomagnetic field as an activity indicator

    A. Viljanen;H. Nevanlinna;K. Pajunpää;A. Pulkkinen

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

    A. Viljanen;R. Pirjola

  • Application and validation of the spherical elementary currents systems technique for deriving ionospheric equivalent currents with the North American and Greenland ground magnetometer arrays

    James M. Weygand;Olaf Amm;A. Viljanen;V. Angelopoulos

  • 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

  • Ionospheric equivalent current distributions determined with the method of spherical elementary current systems

    Antti Pulkkinen;Olaf Amm;Ari Viljanen

  • 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

  • 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

  • The Relation Between Geomagnetic Variations and Their Time Derivatives and Implications for Estimation of Induction Risks

    Ari Viljanen

  • 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

  • Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation

    M. Kulmala;I. Riipinen;I. Riipinen;T. Nieminen;M. Hulkkonen

  • Characteristics of extreme geoelectric fields and their possible causes: Localized peak enhancements

    Chigomezyo M. Ngwira;Chigomezyo M. Ngwira;Antti A. Pulkkinen;Emanuel Bernabeu;Jan Eichner

  • Observations of Substorm Electrodynamics Using the MIRACLE Network

    M. T. Syrjäsuo;T. I. Pulkkinen;P. Janhunen;A. Viljanen

  • Space weather risk

    Risto Pirjola;Kirsti Kauristie;Hanna Lappalainen;Ari Viljanen

  • Modeling geomagnetically induced currents during different ionospheric situations

    Ari Viljanen;Olaf Amm;Risto Pirjola

Frequent Co-Authors

Risto Pirjola
Risto Pirjola Natural Resources Canada
Antti Pulkkinen
Antti Pulkkinen Goddard Space Flight Center
Tuija Pulkkinen
Tuija Pulkkinen University of Michigan–Ann Arbor
James A. Slavin
James A. Slavin University of Michigan–Ann Arbor
Eric Donovan
Eric Donovan University of Calgary
Hermann Lühr
Hermann Lühr University of Potsdam
Kalevi Mursula
Kalevi Mursula University of Oulu
Pekka T. Verronen
Pekka T. Verronen Finnish Meteorological Institute
Daniel N. Baker
Daniel N. Baker University of Colorado Boulder
Hannu E. J. Koskinen
Hannu E. J. Koskinen University of Helsinki

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