Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,690 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Pep Canadell
Carbon Cycle
Carbon-Climate Feedbacks
Decarbonization
Metrics
H-Index
i10 Index
Citation
128
252
119,390
* Rankings
Ranking Based On Selection: 2
Gareth F Moorhead
radiation detectors
x-ray fluorescence microscopy
Metrics
H-Index
i10 Index
Citation
124
253
119,169
* Rankings
Ranking Based On Selection: 8
Alistair Hobday
climate adaptation
marine climate change
fisheries oceanography
risk-based management
Metrics
H-Index
i10 Index
Citation
91
325
39,765
* Rankings
Ranking Based On Selection: 9
Jeff Baldock
Carbon and nitrogen cycling in soils and sediments
Metrics
H-Index
i10 Index
Citation
90
216
32,442

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Rankings
Ranking Based On Selection: 11
Lu Zhang
water resources management
hydrology
climate change
environmental sciences
Metrics
H-Index
i10 Index
Citation
89
221
28,908
* Rankings
Ranking Based On Selection: 14
Graeme Moad
polymer science
polymer synthesis
polymerization
polymerization kinetics
sustainable polymers
Metrics
H-Index
i10 Index
Citation
86
254
48,627
* Rankings
Ranking Based On Selection: 15
Simon Ferrier
Biodiversity
global change
modelling
conservation assessment
Metrics
H-Index
i10 Index
Citation
85
176
54,006
* Rankings
Ranking Based On Selection: 18
Tim R. Mcvicar
Ecohydrology
Climate Change
Remote Sensing
Vegetation Dynamics
Catchment Modelling
Metrics
H-Index
i10 Index
Citation
80
205
32,428
* Rankings
Ranking Based On Selection: 24
Alex Hyatt
Electron Microscopy
Diagnotic Virology
Emerging Diseases
Wildlife Health
Metrics
H-Index
i10 Index
Citation
77
170
32,853
* Rankings
Ranking Based On Selection: 25
Ea Fulton
ecosystem modelling
fisheries
multiple use management
climate change
Metrics
H-Index
i10 Index
Citation
76
220
27,983
* Rankings
Ranking Based On Selection: 30
Chiew Francis
Hydrological modelling
Hydroclimatology
Water resources
Integrated basin management
Metrics
H-Index
i10 Index
Citation
75
218
22,845
* Rankings
Ranking Based On Selection: 38
Peter Thrall
evolutionary biology
disease ecology
plant-soil interactions
Metrics
H-Index
i10 Index
Citation
72
162
17,013
* Rankings
Ranking Based On Selection: 41
Anthony Bruce Murphy
plasmas
thermal plasmas
arc welding
metal additive manufacturing
plasma catalysis
Metrics
H-Index
i10 Index
Citation
69
247
21,575
* Rankings
Ranking Based On Selection: 42
Paul Krummel
Atmospheric composition
greenhouse gases
ozone depleting substances
Metrics
H-Index
i10 Index
Citation
69
182
22,245
* Rankings
Ranking Based On Selection: 49
Graeme E. Batley
Environmental contaminants in aquatic ecosystems
water and sediment quality
environmental
Metrics
H-Index
i10 Index
Citation
67
180
21,997
* Rankings
Ranking Based On Selection: 50
Enli Wang
Soil-Plant Systems Modelling
Applied Meteorology
Climate Change Impact
Hydrology
Metrics
H-Index
i10 Index
Citation
66
187
22,470
* Rankings
Ranking Based On Selection: 51
Ming Feng
Physical oceanography
climate variability
Leeuwin Current
Marine heatwaves
Indian Ocean
Metrics
H-Index
i10 Index
Citation
66
165
17,973
* Rankings
Ranking Based On Selection: 59
Olivier Salvado
medical imaging
precision medicine
machine learning
neuroimaging
computer vision
Metrics
H-Index
i10 Index
Citation
61
173
17,103
* Rankings
Ranking Based On Selection: 64
De Barro P
Bemisia tabaci
biosecurity
invasion biology
Metrics
H-Index
i10 Index
Citation
60
139
15,192
* Rankings
Ranking Based On Selection: 67
Owen Thomas Denmead
Micrometeorology
soil
water
fluxes between earth & atmosphere
greenhouse and agriculture
Metrics
H-Index
i10 Index
Citation
60
125
12,879
* Rankings
Ranking Based On Selection: 68
Ming Ding
Data Privacy and Security
Trustworthy AI
Information Technology
Metrics
H-Index
i10 Index
Citation
59
189
18,167
* Rankings
Ranking Based On Selection: 71
Matthew R Hill
porous materials
clean energy
separations
storage
inorganic chemistry
Metrics
H-Index
i10 Index
Citation
59
135
11,979
* Rankings
Ranking Based On Selection: 73
Stuart Simpson
Sediment and water quality assessment and guidelines
Metrics
H-Index
i10 Index
Citation
59
173
13,522
* Rankings
Ranking Based On Selection: 74
Paul Feron
carbon dioxide capture
absorption processes
membrane technology
energy technology
Metrics
H-Index
i10 Index
Citation
59
152
13,359
* Rankings
Ranking Based On Selection: 75
Keith L. Bristow
Soil physics
Irrigated systems
Groundwater systems
Agroecosystems
Metrics
H-Index
i10 Index
Citation
59
146
16,238
* Rankings
Ranking Based On Selection: 79
Heinz Schandl
Social-ecological systems
socio-economic metabolism
sustainable use of natural resources
sustainable consumption and producti
Metrics
H-Index
i10 Index
Citation
58
116
14,365
* Rankings
Ranking Based On Selection: 83
Darren Kriticos
Pest forecasting
Ecology
Ecological modelling
Biosecurity
Global Change
Metrics
H-Index
i10 Index
Citation
57
154
12,821
* Rankings
Ranking Based On Selection: 89
Wei Ni
6G security and privacy
connected and trusted intelligence
applied AI/ML
Metrics
H-Index
i10 Index
Citation
55
304
13,984
* Rankings
Ranking Based On Selection: 95
Liming Zhu
Software Architecture
SE4AI
Responsible AI
AI Safety
Blockchain
Metrics
H-Index
i10 Index
Citation
54
177
15,341
* Rankings
Ranking Based On Selection: 96
Luke Daulton Connell
Coal seam gas
shale gas
unconventional gas
enhanced recovery
CO2 storage
Metrics
H-Index
i10 Index
Citation
54
107
10,780
* Rankings
Ranking Based On Selection: 99
Anthony O'Grady
plant ecophysiology
ecohydrology
transpiration
carbon and water fluxes
Metrics
H-Index
i10 Index
Citation
54
89
9,747
* Rankings
Ranking Based On Selection: 100
Quanxi Shao
Environmetrics
Extreme modelling
Statistical forecasting
Uncertainty analysis
Spatio-temporal modelling.
Metrics
H-Index
i10 Index
Citation
53
139
9,630
Rankings
Ranking Based On Selection: 1
Pep Canadell
Metrics
H-Index
i10 Index
Citation Counts
128
252
119,390
Carbon Cycle
Carbon-Climate Feedbacks
Decarbonization
Rankings
Ranking Based On Selection: 2
Gareth F Moorhead
Metrics
H-Index
i10 Index
Citation Counts
124
253
119,169
radiation detectors
x-ray fluorescence microscopy
Rankings
Ranking Based On Selection: 3
Elizabeth S. Dennis
Metrics
H-Index
i10 Index
Citation Counts
123
332
49,705
Rankings
Ranking Based On Selection: 4
Michael Fenech
Metrics
H-Index
i10 Index
Citation Counts
105
295
53,247
DNA damage
micronucleus
telomere
nutrition
lifestyle genotoxins
Rankings
Ranking Based On Selection: 5
Brian Walker
Metrics
H-Index
i10 Index
Citation Counts
103
281
145,798
Rankings
Ranking Based On Selection: 6
Simon Johnston
Metrics
H-Index
i10 Index
Citation Counts
103
353
38,559
Rankings
Ranking Based On Selection: 7
Peter D Nichols
Metrics
H-Index
i10 Index
Citation Counts
98
418
35,905
marine oils
omega-3
signature lipids
fecal sterols
biotechnology
Rankings
Ranking Based On Selection: 8
Alistair Hobday
Metrics
H-Index
i10 Index
Citation Counts
91
325
39,765
climate adaptation
marine climate change
fisheries oceanography
risk-based management
Rankings
Ranking Based On Selection: 9
Jeff Baldock
Metrics
H-Index
i10 Index
Citation Counts
90
216
32,442
Carbon and nitrogen cycling in soils and sediments

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 11
Lu Zhang
Metrics
H-Index
i10 Index
Citation Counts
89
221
28,908
water resources management
hydrology
climate change
environmental sciences
Rankings
Ranking Based On Selection: 12
John K. Volkman
Metrics
H-Index
i10 Index
Citation Counts
89
209
32,395
Rankings
Ranking Based On Selection: 13
Wenju Cai
Metrics
H-Index
i10 Index
Citation Counts
87
249
32,778
Rankings
Ranking Based On Selection: 14
Graeme Moad
Metrics
H-Index
i10 Index
Citation Counts
86
254
48,627
polymer science
polymer synthesis
polymerization
polymerization kinetics
sustainable polymers
Rankings
Ranking Based On Selection: 15
Simon Ferrier
Metrics
H-Index
i10 Index
Citation Counts
85
176
54,006
Biodiversity
global change
modelling
conservation assessment
Rankings
Ranking Based On Selection: 17
Ezio Rizzardo
Metrics
H-Index
i10 Index
Citation Counts
85
224
43,108
Rankings
Ranking Based On Selection: 18
Tim R. Mcvicar
Metrics
H-Index
i10 Index
Citation Counts
80
205
32,428
Ecohydrology
Climate Change
Remote Sensing
Vegetation Dynamics
Catchment Modelling
Rankings
Ranking Based On Selection: 19
Rai Kookana
Metrics
H-Index
i10 Index
Citation Counts
80
255
26,603
Environment
Pesticides
wastewater
risk assessment
biochar
Rankings
Ranking Based On Selection: 20
Russell C Babcock
Metrics
H-Index
i10 Index
Citation Counts
79
208
27,638
Rankings
Ranking Based On Selection: 22
Ying-Ping Wang
Metrics
H-Index
i10 Index
Citation Counts
78
162
26,623
Rankings
Ranking Based On Selection: 23
John Pitt
Metrics
H-Index
i10 Index
Citation Counts
78
233
32,832
Rankings
Ranking Based On Selection: 24
Alex Hyatt
Metrics
H-Index
i10 Index
Citation Counts
77
170
32,853
Electron Microscopy
Diagnotic Virology
Emerging Diseases
Wildlife Health
Rankings
Ranking Based On Selection: 25
Ea Fulton
Metrics
H-Index
i10 Index
Citation Counts
76
220
27,983
ecosystem modelling
fisheries
multiple use management
climate change
Rankings
Ranking Based On Selection: 26
John Kirkegaard
Metrics
H-Index
i10 Index
Citation Counts
76
203
24,178
Rankings
Ranking Based On Selection: 27
Alan E Richardson
Metrics
H-Index
i10 Index
Citation Counts
76
170
25,036
Phosphorus
soil
plant nutrition
microbial ecology
Rankings
Ranking Based On Selection: 28
Evans Lagudah
Metrics
H-Index
i10 Index
Citation Counts
76
167
22,729
genetics
disease resistance
plant science
breeding
rust
Rankings
Ranking Based On Selection: 29
Chris Ryan
Metrics
H-Index
i10 Index
Citation Counts
76
225
20,712
Rankings
Ranking Based On Selection: 30
Chiew Francis
Metrics
H-Index
i10 Index
Citation Counts
75
218
22,845
Hydrological modelling
Hydroclimatology
Water resources
Integrated basin management
Rankings
Ranking Based On Selection: 31
David Karoly
Metrics
H-Index
i10 Index
Citation Counts
74
188
29,934
Rankings
Ranking Based On Selection: 32
Peter Dodds
Metrics
H-Index
i10 Index
Citation Counts
73
127
23,955
Rankings
Ranking Based On Selection: 33
Baerbel Koribalski
Metrics
H-Index
i10 Index
Citation Counts
73
267
20,722
Rankings
Ranking Based On Selection: 34
Pj Thorburn
Metrics
H-Index
i10 Index
Citation Counts
72
207
23,480
Sustainable agriculture
Soil-plant interactions
Rankings
Ranking Based On Selection: 35
Steve Rintoul
Metrics
H-Index
i10 Index
Citation Counts
72
184
47,024
Rankings
Ranking Based On Selection: 37
Paul W. Cleary
Metrics
H-Index
i10 Index
Citation Counts
72
253
19,253
Rankings
Ranking Based On Selection: 38
Peter Thrall
Metrics
H-Index
i10 Index
Citation Counts
72
162
17,013
evolutionary biology
disease ecology
plant-soil interactions
Rankings
Ranking Based On Selection: 40
Austin Mp
Metrics
H-Index
i10 Index
Citation Counts
71
123
29,199
Rankings
Ranking Based On Selection: 41
Anthony Bruce Murphy
Metrics
H-Index
i10 Index
Citation Counts
69
247
21,575
plasmas
thermal plasmas
arc welding
metal additive manufacturing
plasma catalysis
Rankings
Ranking Based On Selection: 42
Paul Krummel
Metrics
H-Index
i10 Index
Citation Counts
69
182
22,245
Atmospheric composition
greenhouse gases
ozone depleting substances
Rankings
Ranking Based On Selection: 43
Barnes Stephen J
Metrics
H-Index
i10 Index
Citation Counts
69
197
15,729
Rankings
Ranking Based On Selection: 45
Christopher Simon Mcsweeney
Metrics
H-Index
i10 Index
Citation Counts
68
189
19,791
Rumen and gut microbiology
ruminant nutrition
Rankings
Ranking Based On Selection: 46
John Passioura
Metrics
H-Index
i10 Index
Citation Counts
68
111
19,376
Rankings
Ranking Based On Selection: 47
Chris Wilcox
Metrics
H-Index
i10 Index
Citation Counts
67
151
32,553
conservation biology
fisheries
statistics
movement
incentives
Rankings
Ranking Based On Selection: 48
Greg Rebetzke
Metrics
H-Index
i10 Index
Citation Counts
67
165
20,037
Rankings
Ranking Based On Selection: 49
Graeme E. Batley
Metrics
H-Index
i10 Index
Citation Counts
67
180
21,997
Environmental contaminants in aquatic ecosystems
water and sediment quality
environmental
Rankings
Ranking Based On Selection: 50
Enli Wang
Metrics
H-Index
i10 Index
Citation Counts
66
187
22,470
Soil-Plant Systems Modelling
Applied Meteorology
Climate Change Impact
Hydrology
Rankings
Ranking Based On Selection: 51
Ming Feng
Metrics
H-Index
i10 Index
Citation Counts
66
165
17,973
Physical oceanography
climate variability
Leeuwin Current
Marine heatwaves
Indian Ocean
Rankings
Ranking Based On Selection: 53
Laurence Mound
Metrics
H-Index
i10 Index
Citation Counts
65
290
16,906
Rankings
Ranking Based On Selection: 54
Surya Nepal
Metrics
H-Index
i10 Index
Citation Counts
64
293
19,620
Rankings
Ranking Based On Selection: 55
Peter R Ryan
Metrics
H-Index
i10 Index
Citation Counts
64
105
23,929
abiotic stress
aluminium toxicity
membrane transport
plant nutrition
Rankings
Ranking Based On Selection: 56
Simon Robinson
Metrics
H-Index
i10 Index
Citation Counts
64
109
20,435
Rankings
Ranking Based On Selection: 58
Suzanne M Prober
Metrics
H-Index
i10 Index
Citation Counts
61
152
17,294
Rankings
Ranking Based On Selection: 59
Olivier Salvado
Metrics
H-Index
i10 Index
Citation Counts
61
173
17,103
medical imaging
precision medicine
machine learning
neuroimaging
computer vision
Rankings
Ranking Based On Selection: 60
Antonio Reverter
Metrics
H-Index
i10 Index
Citation Counts
61
172
12,092
Statistical and quantitative genetics and genomics
Rankings
Ranking Based On Selection: 61
Surinder Singh
Metrics
H-Index
i10 Index
Citation Counts
61
181
14,818
plant lipids
fatty acids
Metabolic Engineering
Rankings
Ranking Based On Selection: 62
Tj Higgins
Metrics
H-Index
i10 Index
Citation Counts
61
142
12,908
Rankings
Ranking Based On Selection: 63
Stephen Ord
Metrics
H-Index
i10 Index
Citation Counts
60
141
13,803
Rankings
Ranking Based On Selection: 64
De Barro P
Metrics
H-Index
i10 Index
Citation Counts
60
139
15,192
Bemisia tabaci
biosecurity
invasion biology
Rankings
Ranking Based On Selection: 65
Richard J Simpson
Metrics
H-Index
i10 Index
Citation Counts
60
155
13,710
agriculture
agronomy
soil fertility
pasture
grassland
Rankings
Ranking Based On Selection: 66
Sean Pascoe
Metrics
H-Index
i10 Index
Citation Counts
60
194
11,505
Fisheries economics
economics of marine conservation
Rankings
Ranking Based On Selection: 67
Owen Thomas Denmead
Metrics
H-Index
i10 Index
Citation Counts
60
125
12,879
Micrometeorology
soil
water
fluxes between earth & atmosphere
greenhouse and agriculture
Rankings
Ranking Based On Selection: 68
Ming Ding
Metrics
H-Index
i10 Index
Citation Counts
59
189
18,167
Data Privacy and Security
Trustworthy AI
Information Technology
Rankings
Ranking Based On Selection: 69
Britta Denise Hardesty
Metrics
H-Index
i10 Index
Citation Counts
59
115
15,375
Plastic pollution
marine debris
science leadership
ecosystem sustainability
Rankings
Ranking Based On Selection: 70
Zongli Xie
Metrics
H-Index
i10 Index
Citation Counts
59
150
10,215
Rankings
Ranking Based On Selection: 71
Matthew R Hill
Metrics
H-Index
i10 Index
Citation Counts
59
135
11,979
porous materials
clean energy
separations
storage
inorganic chemistry
Rankings
Ranking Based On Selection: 73
Stuart Simpson
Metrics
H-Index
i10 Index
Citation Counts
59
173
13,522
Sediment and water quality assessment and guidelines
Rankings
Ranking Based On Selection: 74
Paul Feron
Metrics
H-Index
i10 Index
Citation Counts
59
152
13,359
carbon dioxide capture
absorption processes
membrane technology
energy technology
Rankings
Ranking Based On Selection: 75
Keith L. Bristow
Metrics
H-Index
i10 Index
Citation Counts
59
146
16,238
Soil physics
Irrigated systems
Groundwater systems
Agroecosystems
Rankings
Ranking Based On Selection: 76
Michael Battaglia
Metrics
H-Index
i10 Index
Citation Counts
59
146
12,542
Rankings
Ranking Based On Selection: 77
Christopher Smith
Metrics
H-Index
i10 Index
Citation Counts
59
149
12,878
Agriculture
land and Water
Irrigation
wetlands
Rankings
Ranking Based On Selection: 78
David Bernard Boyle
Metrics
H-Index
i10 Index
Citation Counts
59
154
13,591
Virology
Vaccine Vectors
Immunology
Virus evolution
Rankings
Ranking Based On Selection: 79
Heinz Schandl
Metrics
H-Index
i10 Index
Citation Counts
58
116
14,365
Social-ecological systems
socio-economic metabolism
sustainable use of natural resources
sustainable consumption and producti
Rankings
Ranking Based On Selection: 80
Cara Doherty
Metrics
H-Index
i10 Index
Citation Counts
58
121
11,412
Rankings
Ranking Based On Selection: 81
Anna Kaksonen
Metrics
H-Index
i10 Index
Citation Counts
58
170
10,112
biotechnology
microbiology
environment
bioprocessing
Rankings
Ranking Based On Selection: 82
Hobbs Be
Metrics
H-Index
i10 Index
Citation Counts
58
206
13,884
Rankings
Ranking Based On Selection: 83
Darren Kriticos
Metrics
H-Index
i10 Index
Citation Counts
57
154
12,821
Pest forecasting
Ecology
Ecological modelling
Biosecurity
Global Change
Rankings
Ranking Based On Selection: 85
Ian Dry
Metrics
H-Index
i10 Index
Citation Counts
57
113
10,309
Rankings
Ranking Based On Selection: 86
Penny Whetton
Metrics
H-Index
i10 Index
Citation Counts
57
142
28,472
Rankings
Ranking Based On Selection: 87
James Risbey
Metrics
H-Index
i10 Index
Citation Counts
56
129
11,410
Rankings
Ranking Based On Selection: 88
Brian Meehan
Metrics
H-Index
i10 Index
Citation Counts
56
75
12,414
Rankings
Ranking Based On Selection: 89
Wei Ni
Metrics
H-Index
i10 Index
Citation Counts
55
304
13,984
6G security and privacy
connected and trusted intelligence
applied AI/ML
Rankings
Ranking Based On Selection: 90
Vanessa Haverd
Metrics
H-Index
i10 Index
Citation Counts
55
114
17,128
Rankings
Ranking Based On Selection: 91
Nic Bax
Metrics
H-Index
i10 Index
Citation Counts
55
112
11,255
Rankings
Ranking Based On Selection: 92
Gary Meyers
Metrics
H-Index
i10 Index
Citation Counts
55
100
12,773
Physical oceanography
Ocean-climate
Ocean Observing System
Rankings
Ranking Based On Selection: 93
Brian A Keating
Metrics
H-Index
i10 Index
Citation Counts
55
126
16,911
Rankings
Ranking Based On Selection: 94
Ross Tellam
Metrics
H-Index
i10 Index
Citation Counts
55
100
11,323
Rankings
Ranking Based On Selection: 95
Liming Zhu
Metrics
H-Index
i10 Index
Citation Counts
54
177
15,341
Software Architecture
SE4AI
Responsible AI
AI Safety
Blockchain
Rankings
Ranking Based On Selection: 96
Luke Daulton Connell
Metrics
H-Index
i10 Index
Citation Counts
54
107
10,780
Coal seam gas
shale gas
unconventional gas
enhanced recovery
CO2 storage
Rankings
Ranking Based On Selection: 98
David K Yeates
Metrics
H-Index
i10 Index
Citation Counts
54
140
14,353
taxonomy
systematics
Diptera
Insecta
biodiversity
Rankings
Ranking Based On Selection: 99
Anthony O'Grady
Metrics
H-Index
i10 Index
Citation Counts
54
89
9,747
plant ecophysiology
ecohydrology
transpiration
carbon and water fluxes
Rankings
Ranking Based On Selection: 100
Quanxi Shao
Metrics
H-Index
i10 Index
Citation Counts
53
139
9,630
Environmetrics
Extreme modelling
Statistical forecasting
Uncertainty analysis
Spatio-temporal modelling.