Citation Rankings
Highly Cited Researchers
Africa Engineering & TechnologyEngineering & Technology / Meteorology & Atmospheric Sciences Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
astronomy and astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,187
22,316
0.397
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Astrophysics
cosmology
radio astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,739
30,310
0.825
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,512
11,382
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Earth Observation
Global Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,686
4,486
0.254
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
16,093
0.984
* Total Citation Counts Rankings
Ranking Based On Selection: 6
astrophysics
cosmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,074
9,035
0.562
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Astrophysics
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,039
10,020
0.666
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Astrophysics
Cataclysmic Variables
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,936
6,867
0.628
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Extragalactic astronomy
galaxy evolution
gravitational lensing
data visualisation
Science communication
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,454
4,103
0.434
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,345
1,797
0.215
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Climate
Meteorology
Atmospheric modelling
Pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,975
4,988
0.625
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,868
1,758
0.300
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Atmospheric Science / Geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,793
3,261
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Radio Astronomy
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,121
4,472
0.873
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Astrophysics
gamma-ray astronomy
pulsar wind nebulae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,778
4,292
0.898
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Atmospheric sciences
chrome technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,308
2,784
0.646
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Fruit quality
Antioxidant
Enzymes
shelf life
phenolic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,476
1,491
0.429
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Atmospheric remote sensing
climate modelling
space physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,374
1,759
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Meteorology
Climate Change
Climate Services
DRR
Sustainable Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,281
3,027
0.923
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Astrophysics
Cosmology
Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,177
3,100
0.976
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Stellar Astrophysics of Pulsars
Theoretical Astrophysics
Modified gravity
Cosmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,584
1,199
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Atmospheric and environmental sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,230
1,322
0.593
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Meteorology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,133
1,246
0.584
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Astronomy & Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,060
1,760
0.854
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Reionization and cosmic dawn
radio astronomy
astrostatistics
machine learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,882
1,472
0.782
* Total Citation Counts Rankings
Rankings
8,292
24
11
Ranking Based On Selection: 1
TH Jarrett
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,187
22,316
0.397
astronomy and astrophysics
* Total Citation Counts Rankings
Rankings
16,353
47
4
Ranking Based On Selection: 2
Yin-Zhe Ma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,739
30,310
0.825
Astrophysics
cosmology
radio astronomy
* Total Citation Counts Rankings
Rankings
30,417
93
3
Ranking Based On Selection: 3
Markus Boettcher
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,512
11,382
0.464
* Total Citation Counts Rankings
Rankings
47,971
152
23
Ranking Based On Selection: 4
Michel Verstraete
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,686
4,486
0.254
Earth Observation
Global Change
* Total Citation Counts Rankings
Rankings
53,232
174
26
Ranking Based On Selection: 5
Roger Deane
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
16,093
0.984
* Total Citation Counts Rankings
Rankings
54,550
181
17
Ranking Based On Selection: 6
Kavilan Moodley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,074
9,035
0.562
astrophysics
cosmology
* Total Citation Counts Rankings
Rankings
59,592
200
7
Ranking Based On Selection: 7
Iurii Sushch
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,039
10,020
0.666
Astrophysics
Astronomy
* Total Citation Counts Rankings
Rankings
88,757
307
69
Ranking Based On Selection: 8
Patrick A. Woudt
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,936
6,867
0.628
Astrophysics
Cataclysmic Variables
* Total Citation Counts Rankings
Rankings
104,981
375
95
Ranking Based On Selection: 9
Lucia Marchetti
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,454
4,103
0.434
Extragalactic astronomy
galaxy evolution
gravitational lensing
data visualisation
Science communication
* Total Citation Counts Rankings
Rankings
120,987
451
111
Ranking Based On Selection: 10
Claude Carignan
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,345
1,797
0.215
* Total Citation Counts Rankings
Rankings
127,125
476
114
Ranking Based On Selection: 11
Babatunde J. Abiodun
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,975
4,988
0.625
Climate
Meteorology
Atmospheric modelling
Pollution
* Total Citation Counts Rankings
Rankings
175,191
705
172
Ranking Based On Selection: 12
Renée C. Kraan-Korteweg
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,868
1,758
0.300
* Total Citation Counts Rankings
Rankings
177,449
718
27
Ranking Based On Selection: 13
Stuart Piketh
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,793
3,261
0.563
Atmospheric Science / Geography
* Total Citation Counts Rankings
Rankings
200,090
827
17
Ranking Based On Selection: 14
Sphesihle Makhathini
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,121
4,472
0.873
Radio Astronomy
Astrophysics
* Total Citation Counts Rankings
Rankings
214,053
895
38
Ranking Based On Selection: 15
Carlo Van Rensburg
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,778
4,292
0.898
Astrophysics
gamma-ray astronomy
pulsar wind nebulae
* Total Citation Counts Rankings
Rankings
235,723
991
40
Ranking Based On Selection: 16
Pieter Gideon Van Zyl
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,308
2,784
0.646
Atmospheric sciences
chrome technology
* Total Citation Counts Rankings
Rankings
285,211
676
64
Ranking Based On Selection: 17
Mohamed A Awad
Mansoura University
Mansoura, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,476
1,491
0.429
Fruit quality
Antioxidant
Enzymes
shelf life
phenolic
* Total Citation Counts Rankings
Rankings
292,588
18
6
Ranking Based On Selection: 18
Gizaw Mengistu Tsidu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,374
1,759
0.521
Atmospheric remote sensing
climate modelling
space physics
* Total Citation Counts Rankings
Rankings
299,596
129
15
Ranking Based On Selection: 19
Victor Ongoma
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,281
3,027
0.923
Meteorology
Climate Change
Climate Services
DRR
Sustainable Development
* Total Citation Counts Rankings
Rankings
307,727
1,363
92
Ranking Based On Selection: 20
Feraol Fana Dirirsa
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,177
3,100
0.976
Astrophysics
Cosmology
Data Science
* Total Citation Counts Rankings
Rankings
363,977
1,662
144
Ranking Based On Selection: 21
Subharthi Ray
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,584
1,199
0.464
Stellar Astrophysics of Pulsars
Theoretical Astrophysics
Modified gravity
Cosmology
* Total Citation Counts Rankings
Rankings
406,921
1,905
86
Ranking Based On Selection: 22
Miroslav Josipovic
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,230
1,322
0.593
Atmospheric and environmental sciences
* Total Citation Counts Rankings
Rankings
420,502
1,995
35
Ranking Based On Selection: 23
Johan Malherbe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,133
1,246
0.584
* Total Citation Counts Rankings
Rankings
431,447
2,038
91
Ranking Based On Selection: 24
Chibueze James Okwe
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,060
1,760
0.854
Astronomy & Astrophysics
* Total Citation Counts Rankings
Rankings
460,049
2,192
197
Ranking Based On Selection: 25
Piyanat Kittiwisit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,882
1,472
0.782
Reionization and cosmic dawn
radio astronomy
astrostatistics
machine learning