Harald U. Frey publications per year

The chart shows the history of publications by Harald U. Frey between 1994 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Harald U. Frey published across 31 years, from 1994 to 2024, averaging 17.6 papers a year. Output peaked at 42 publications in 2005. 17 of the 545 publications appeared in the last two years.

No. of publications

10 20 30 40

1994 2024

545 publications in total across all disciplines

View publications per year as a table

Harald U. Frey: publications per year, 1994 to 2024
Year	Publications
1994	1
1995	1
1996	7
1997	3
1998	7
1999	7
2000	12
2001	19
2002	34
2003	33
2004	23
2005	42
2006	32
2007	35
2008	42
2009	38
2010	32
2011	22
2012	19
2013	20
2014	16
2015	11
2016	18
2017	8
2018	13
2019	5
2020	8
2021	10
2022	10
2023	15
2024	2
Total	545

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Harald U. Frey 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 Harald U. Frey sits on this spectrum.

No. of scientists

100 200 300 400 500

38–47 publications 603+

This scientist: 439 publications — 96th percentile

96% 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
398–407	44
408–417	31
418–427	39
428–437	27
438–447	36	439
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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Harald U. Frey 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 Harald U. Frey sits on this spectrum.

No. of scientists

100 200 300

30 D-Index 106+

This scientist: 68 D-Index — 88th percentile

88% 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	68
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

Harald U. Frey is affiliated with the University of California, Berkeley in the United States. Their research primarily spans the fields of Physics and Astronomy as well as Earth and Planetary Sciences.

The scientist's work focuses extensively on topics related to ionosphere and magnetosphere dynamics, solar and space plasma dynamics, and atmospheric ozone and climate. Additional research interests include earthquake detection and analysis, geomagnetism and paleomagnetism studies, GNSS positioning and interference, and geophysics and gravity measurements.

Frequent publication venues for their research include:

Journal of Geophysical Research Space Physics
Space Science Reviews
Geophysical Research Letters
SSRN Electronic Journal
Zenodo (CERN European Organization for Nuclear Research)

Notable recent papers authored or co-authored by Harald U. Frey are:

"Aurora in the Polar Cap: A Review," 2020, Space Science Reviews
"Global Propagation of Magnetospheric Pc5 ULF Waves Driven by Foreshock Transients," 2020, Journal of Geophysical Research Space Physics
"Proton Aurora and Optical Emissions in the Subauroral Region," 2021, Space Science Reviews
"The Ionospheric Connection Explorer - Prime Mission Review," 2023, Space Science Reviews
"First ICON-FUV Nighttime NmF2 and hmF2 Comparison to Ground and Space-Based Measurements," 2021, Journal of Geophysical Research Space Physics

Throughout their career, Frey has frequently collaborated with several co-authors, including:

S. B. Mende
S. England
T. J. Immel
Farzad Kamalabadi
R. R. Meier

Best Publications

Tail reconnection triggering substorm onset.

Vassilis Angelopoulos;James P. McFadden;Davin Larson;Charles W. Carlson

781
Citations
Control of equatorial ionospheric morphology by atmospheric tides

T. J. Immel;E. Sagawa;S. L. England;S. B. Henderson

751
Citations
The Space Physics Environment Data Analysis System (SPEDAS)

V. Angelopoulos;P. Cruce;A. Drozdov;E. W. Grimes

543
Citations
Substorm onset observations by IMAGE-FUV

H. U. Frey;S. B. Mende;V. Angelopoulos;E. F. Donovan

394
Citations
The THEMIS Array of Ground-based Observatories for the Study of Auroral Substorms

S. B. Mende;S. E. Harris;H. U. Frey;V. Angelopoulos

371
Citations
Far Ultraviolet Imaging from the Image Spacecraft: 1. System Design

S. B. Mende;H. Heetderks;H. U. Frey;M. Lampton

349
Citations
Longitudinal structure of the equatorial anomaly in the nighttime ionosphere observed by IMAGE/FUV

E. Sagawa;T. J. Immel;H. U. Frey;S. B. Mende

345
Citations
Global distributions and occurrence rates of transient luminous events

Alfred B. Chen;Cheng Ling Kuo;Cheng Ling Kuo;Yi Jen Lee;Han Tzong Su

322
Citations
Far Ultraviolet Imaging from the Image Spacecraft

S. B. Mende;H. Heetderks;H. U. Frey;M. Lampton

314
Citations
Far ultraviolet imaging from the IMAGE spacecraft: 3. Spectral imaging of Lyman alpha and OI 135.6 nm

S. B. Mende;H. Heetderks;H. U. Frey;J. M. Stock

273
Citations
First Results from the THEMIS Mission

V. Angelopoulos;D. Sibeck;C. W. Carlson;J. P. McFadden

259
Citations
The Ionospheric Connection Explorer Mission: Mission Goals and Design

T. J. Immel;S. L. England;S. B. Mende;R. A. Heelis

250
Citations
Pulsating aurora from electron scattering by chorus waves

S. Kasahara;Y. Miyoshi;S. Yokota;T. Mitani

237
Citations
Far Ultraviolet Imaging from the Image Spacecraft. 2. Wideband FUV Imaging

S. B. Mende;H. Heetderks;H. U. Frey;M. Lampton

233
Citations
The THEMIS all-sky imaging array—system design and initial results from the prototype imager

Eric Donovan;Stephen Mende;Brian Jackel;Harald Frey

200
Citations
Continuous magnetic reconnection at Earth's magnetopause.

H. U. Frey;T. D. Phan;S. A. Fuselier;S. B. Mende

193
Citations
Simultaneous Cluster and IMAGE observations of cusp reconnection and auroral proton spot for northward IMF

T. Phan;H. U. Frey;S. Frey;L. Peticolas

164
Citations
Cusp aurora dependence on interplanetary magnetic field Bz

S. A. Fuselier;H. U. Frey;K. J. Trattner;S. B. Mende

160
Citations
Fast flow during current sheet thinning

R. Nakamura;W. Baumjohann;A. Runov;M. Volwerk

153
Citations
Evidence for a flux transfer event generated by multiple X-line reconnection at the magnetopause

H. Hasegawa;J. Wang;M. W. Dunlop;Z. Y. Pu

153
Citations
Localized aurora beyond the auroral oval

Harald U. Frey

153
Citations

Frequent Co-Authors

S. B. Mende University of California, Berkeley

Vassilis Angelopoulos University of California, Los Angeles

Yukihiro Takahashi Hokkaido University

Hiroshi Fukunishi Tohoku University

Nikolai Østgaard University of Bergen

J. P. McFadden University of California, Berkeley

Karl-Heinz Glassmeier Technische Universität Braunschweig

Eric Donovan University of Calgary

Andrew Fazakerley University College London

Ian R. Mann University of Alberta

External Links

Personal website of Harald U. Frey

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