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" (873,864 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
T David Waite
Environmental Engineering
Biogeochemistry
Advanced Oxidation Processes
Membrane Technologies
Capacitive Deionization
Metrics
H-Index
i10 Index
Citation
111
429
42,329
* Rankings
Ranking Based On Selection :4
Ashish Sharma
Hydrology
Hydroclimatology
Water Resources
Statistical Hydrology
Metrics
H-Index
i10 Index
Citation
75
260
19,764
* Rankings
Ranking Based On Selection :5
Bin Jalaludin
Environmental epidemiology
air pollution
population health
Metrics
H-Index
i10 Index
Citation
72
255
15,897
* Rankings
Ranking Based On Selection :8
Markus G Donat
climate extremes
climate change
climate variability
predictability
Metrics
H-Index
i10 Index
Citation
57
106
19,658
* Rankings
Ranking Based On Selection :11
Stephen Foster
Concrete Structures
SFRC
Fibre Reinforced Concrete
Geopolymer Concrete
Shear
Metrics
H-Index
i10 Index
Citation
51
147
8,400
* Rankings
Ranking Based On Selection :13
Graciela Metternicht
environmental management and policy
remote sensing
spatial modelling
sustainable land management
land degradation
Metrics
H-Index
i10 Index
Citation
49
112
11,956
* Rankings
Ranking Based On Selection :14
Denis O Carroll
PFAS
Fate of Emerging Contaminants
Environmental Nanotechnology
Groundwater Contamination
Innovative Groundwater Remediation
Metrics
H-Index
i10 Index
Citation
48
91
9,610
* Rankings
Ranking Based On Selection :18
Gab Abramowitz
Climate model dependence
model benchmarking
land surface modelling
model evaluation
Metrics
H-Index
i10 Index
Citation
42
70
6,616
* Rankings
Ranking Based On Selection :19
Hamid Valipour
timber structures
timber engineering
timber
hybrid structures
constitutive modelling of timber
Metrics
H-Index
i10 Index
Citation
40
100
4,505
* Rankings
Ranking Based On Selection :21
Meead Saberi
Transportation
Networks
Traffic Flow Theory
Active Transportation
Mixed Autonomy
Metrics
H-Index
i10 Index
Citation
36
73
4,072
* Rankings
Ranking Based On Selection :22
Kristen D Splinter
empirical shoreline modelling
dune erosion
climate impacts on sandy shorelines
machine learning applications to coastal proce
Metrics
H-Index
i10 Index
Citation
36
70
5,318
* Rankings
Ranking Based On Selection :26
Mario M Attard
Buckling Analysis
Hyperelastic Constitutive Modelling
Finite Strain Continuum Mechanics
Softening and Constitutive Modelling of Concrete
Metrics
H-Index
i10 Index
Citation
32
66
4,336
* Rankings
Ranking Based On Selection :30
Lan Ding
energy efficiency
sustainable buildings and cities
smart cities
climate change adaptation and mitigation
Metrics
H-Index
i10 Index
Citation
26
36
2,551
Tema Milstein
environmental communication
ecocultural communication
human-nature relations
culture and communication
Metrics
H-Index
i10 Index
Citation
24
34
2,060
Matthew Lee
Anaerobic Microbiology
Organohalide Degradation
Contaminant Fate
Metrics
H-Index
i10 Index
Citation
23
37
2,013
Kefeng Zhang
Stormwater management
green technologies
urban water modelling
Metrics
H-Index
i10 Index
Citation
22
43
1,547
William Glamore
estuarine hydrodynamics
wetland restoration
blue carbon
climate change
water quality
Metrics
H-Index
i10 Index
Citation
22
40
1,603
Bojan Tamburic
Environmental Engineering
Water Engineering
Applied Microbiology
Biotechnology
Metrics
H-Index
i10 Index
Citation
21
28
1,243
Juan Pablo Alvarez Gaitan
Life Cycle Assessment
Environmental Management
Sustainable Development GoalsScience
Metrics
H-Index
i10 Index
Citation
19
24
1,369
Kate Brandis
Waterbirds
environmental flows
stable isotopes
wildlife forensics
elemental analysis
Metrics
H-Index
i10 Index
Citation
19
35
1,266
Konstantina Vasilakopoulou
Sustainability
climate change
effects of the built environment on health
inclusive design.
Metrics
H-Index
i10 Index
Citation
18
24
1,872
Sanly Liu
water treatment
natural organic matter properties and characterisation
advanced oxidation process
Metrics
H-Index
i10 Index
Citation
18
20
1,819
Renard Siew
Sustainability
Environmental Governance
ESG
sustainable construction
climate change
Metrics
H-Index
i10 Index
Citation
17
22
2,296
Mohammed Fouad Alnahhal
Alkali-activated materials
Rheology
Recycled Aggregate Concrete
Concrete Durability
Metrics
H-Index
i10 Index
Citation
13
14
1,205
Miao Hu
Synthetic Biology
Environmental Microbiology
PFAS
Bioremediation
Stable isotope probing
Metrics
H-Index
i10 Index
Citation
11
12
454
Nadja Herger
climate science
global climate models
constraining projections
Metrics
H-Index
i10 Index
Citation
10
10
825
Mark Constantine Iv
Wildfire
Paleoecology
Palynology
Australian environmental change
Climate Change
Metrics
H-Index
i10 Index
Citation
7
7
122
Zih-Hong Lin
GIS
Spatial Planning
Spatial Statistic
Environmental Management
Green infrastructure
Metrics
H-Index
i10 Index
Citation
6
4
141
Maryam Mirabediny
Catalysis Synthesis
Environmental Science
Water Treatment
Environmental Chemistry
Metrics
H-Index
i10 Index
Citation
5
5
187
Elmira Katoozi
Separation processes
Water treatment
Resource sustainability
Environmental engineering
Metrics
H-Index
i10 Index
Citation
4
0
27
Zhizhao He 何志钊
Environmental Engineering
Desalination
Capacitive deionization
Electrochemistry
Metrics
H-Index
i10 Index
Citation
3
3
57
Dympna Cullen
Arid ecology
introduced predators
ecological restoration
trophic cascades
small mammals
Metrics
H-Index
i10 Index
Citation
2
1
19
Siqi Sheila Sun
Environmental Engineering
Public Health
Occupational Lung Diseases
Particle Characterisation
Metrics
H-Index
i10 Index
Citation
1
1
27
Rankings
Ranking Based On Selection: 1
T David Waite
Metrics
H-Index
i10 Index
Citation Counts
111
429
42,329
Environmental Engineering
Biogeochemistry
Advanced Oxidation Processes
Membrane Technologies
Capacitive Deionization
Rankings
Ranking Based On Selection: 2
Guy B Marks
Metrics
H-Index
i10 Index
Citation Counts
104
382
114,049
Rankings
Ranking Based On Selection: 3
John Church
Metrics
H-Index
i10 Index
Citation Counts
92
217
129,835
Rankings
Ranking Based On Selection: 4
Ashish Sharma
Metrics
H-Index
i10 Index
Citation Counts
75
260
19,764
Hydrology
Hydroclimatology
Water Resources
Statistical Hydrology
Rankings
Ranking Based On Selection: 5
Bin Jalaludin
Metrics
H-Index
i10 Index
Citation Counts
72
255
15,897
Rankings
Ranking Based On Selection: 6
Ricardo Cavicchioli
Metrics
H-Index
i10 Index
Citation Counts
67
129
16,146
Rankings
Ranking Based On Selection: 7
Stuart Khan
Metrics
H-Index
i10 Index
Citation Counts
63
181
15,339
Rankings
Ranking Based On Selection: 8
Markus G Donat
Metrics
H-Index
i10 Index
Citation Counts
57
106
19,658
climate extremes
climate change
climate variability
predictability
Rankings
Ranking Based On Selection: 9
Richard M Stuetz
Metrics
H-Index
i10 Index
Citation Counts
57
178
14,611
Rankings
Ranking Based On Selection: 10
Sarah Perkins Kirkpatrick
Metrics
H-Index
i10 Index
Citation Counts
53
97
18,715
Rankings
Ranking Based On Selection: 11
Stephen Foster
Metrics
H-Index
i10 Index
Citation Counts
51
147
8,400
Concrete Structures
SFRC
Fibre Reinforced Concrete
Geopolymer Concrete
Shear
Rankings
Ranking Based On Selection: 12
Mike Manefield
Metrics
H-Index
i10 Index
Citation Counts
50
117
15,072
Rankings
Ranking Based On Selection: 13
Graciela Metternicht
Metrics
H-Index
i10 Index
Citation Counts
49
112
11,956
environmental management and policy
remote sensing
spatial modelling
sustainable land management
land degradation
Rankings
Ranking Based On Selection: 14
Denis O Carroll
Metrics
H-Index
i10 Index
Citation Counts
48
91
9,610
PFAS
Fate of Emerging Contaminants
Environmental Nanotechnology
Groundwater Contamination
Innovative Groundwater Remediation
Rankings
Ranking Based On Selection: 15
Greg Leslie
Metrics
H-Index
i10 Index
Citation Counts
45
106
6,687
Rankings
Ranking Based On Selection: 16
Laurie Menviel
Metrics
H-Index
i10 Index
Citation Counts
43
72
5,101
Rankings
Ranking Based On Selection: 17
Agus Santoso
Metrics
H-Index
i10 Index
Citation Counts
42
72
13,336
Rankings
Ranking Based On Selection: 18
Gab Abramowitz
Metrics
H-Index
i10 Index
Citation Counts
42
70
6,616
Climate model dependence
model benchmarking
land surface modelling
model evaluation
Rankings
Ranking Based On Selection: 19
Hamid Valipour
Metrics
H-Index
i10 Index
Citation Counts
40
100
4,505
timber structures
timber engineering
timber
hybrid structures
constitutive modelling of timber
Rankings
Ranking Based On Selection: 20
Adrian Russell
Metrics
H-Index
i10 Index
Citation Counts
37
64
4,526
Rankings
Ranking Based On Selection: 21
Meead Saberi
Metrics
H-Index
i10 Index
Citation Counts
36
73
4,072
Transportation
Networks
Traffic Flow Theory
Active Transportation
Mixed Autonomy
Rankings
Ranking Based On Selection: 22
Kristen D Splinter
Metrics
H-Index
i10 Index
Citation Counts
36
70
5,318
empirical shoreline modelling
dune erosion
climate impacts on sandy shorelines
machine learning applications to coastal proce
Rankings
Ranking Based On Selection: 23
Arash Zamyadi
Metrics
H-Index
i10 Index
Citation Counts
34
65
3,687
Rankings
Ranking Based On Selection: 24
Andrea S Taschetto
Metrics
H-Index
i10 Index
Citation Counts
33
59
5,728
Rankings
Ranking Based On Selection: 25
Fiona Johnson
Metrics
H-Index
i10 Index
Citation Counts
32
70
4,727
Rankings
Ranking Based On Selection: 26
Mario M Attard
Metrics
H-Index
i10 Index
Citation Counts
32
66
4,336
Buckling Analysis
Hyperelastic Constitutive Modelling
Finite Strain Continuum Mechanics
Softening and Constitutive Modelling of Concrete
Rankings
Ranking Based On Selection: 27
William Peirson
Metrics
H-Index
i10 Index
Citation Counts
29
54
2,972
Rankings
Ranking Based On Selection: 28
Christopher Miller
Metrics
H-Index
i10 Index
Citation Counts
28
34
3,122
Biogeochemistry
Free Radicals
Water and Wastewater Treatment
Rankings
Ranking Based On Selection: 29
Nicholas Herold
Metrics
H-Index
i10 Index
Citation Counts
26
35
2,923
Rankings
Ranking Based On Selection: 30
Lan Ding
Metrics
H-Index
i10 Index
Citation Counts
26
36
2,551
energy efficiency
sustainable buildings and cities
smart cities
climate change adaptation and mitigation
Rankings
Ranking Based On Selection: 31
Ariaan Purich
Metrics
H-Index
i10 Index
Citation Counts
25
29
3,466
Rankings
Ranking Based On Selection: 32
Tema Milstein
Metrics
H-Index
i10 Index
Citation Counts
24
34
2,060
environmental communication
ecocultural communication
human-nature relations
culture and communication
Rankings
Ranking Based On Selection: 33
Alice Antony
Metrics
H-Index
i10 Index
Citation Counts
24
30
2,484
Rankings
Ranking Based On Selection: 34
Matthew Lee
Metrics
H-Index
i10 Index
Citation Counts
23
37
2,013
Anaerobic Microbiology
Organohalide Degradation
Contaminant Fate
Rankings
Ranking Based On Selection: 35
Kefeng Zhang
Metrics
H-Index
i10 Index
Citation Counts
22
43
1,547
Stormwater management
green technologies
urban water modelling
Rankings
Ranking Based On Selection: 36
William Glamore
Metrics
H-Index
i10 Index
Citation Counts
22
40
1,603
estuarine hydrodynamics
wetland restoration
blue carbon
climate change
water quality
Rankings
Ranking Based On Selection: 37
Bojan Tamburic
Metrics
H-Index
i10 Index
Citation Counts
21
28
1,243
Environmental Engineering
Water Engineering
Applied Microbiology
Biotechnology
Rankings
Ranking Based On Selection: 38
Juan Pablo Alvarez Gaitan
Metrics
H-Index
i10 Index
Citation Counts
19
24
1,369
Life Cycle Assessment
Environmental Management
Sustainable Development GoalsScience
Rankings
Ranking Based On Selection: 39
Kate Brandis
Metrics
H-Index
i10 Index
Citation Counts
19
35
1,266
Waterbirds
environmental flows
stable isotopes
wildlife forensics
elemental analysis
Rankings
Ranking Based On Selection: 40
Konstantina Vasilakopoulou
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,872
Sustainability
climate change
effects of the built environment on health
inclusive design.
Rankings
Ranking Based On Selection: 41
Margot Bador
Metrics
H-Index
i10 Index
Citation Counts
18
21
1,801
Rankings
Ranking Based On Selection: 42
Joseph Kidston
Metrics
H-Index
i10 Index
Citation Counts
18
20
2,637
Rankings
Ranking Based On Selection: 43
Sanly Liu
Metrics
H-Index
i10 Index
Citation Counts
18
20
1,819
water treatment
natural organic matter properties and characterisation
advanced oxidation process
Rankings
Ranking Based On Selection: 44
Hongyan Rong
Metrics
H-Index
i10 Index
Citation Counts
18
18
820
Rankings
Ranking Based On Selection: 45
Renard Siew
Metrics
H-Index
i10 Index
Citation Counts
17
22
2,296
Sustainability
Environmental Governance
ESG
sustainable construction
climate change
Rankings
Ranking Based On Selection: 46
Damien Irving
Metrics
H-Index
i10 Index
Citation Counts
17
18
1,920
Rankings
Ranking Based On Selection: 48
Mohammed Fouad Alnahhal
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,205
Alkali-activated materials
Rheology
Recycled Aggregate Concrete
Concrete Durability
Rankings
Ranking Based On Selection: 49
Miao Hu
Metrics
H-Index
i10 Index
Citation Counts
11
12
454
Synthetic Biology
Environmental Microbiology
PFAS
Bioremediation
Stable isotope probing
Rankings
Ranking Based On Selection: 50
Adam Sookdeo
Metrics
H-Index
i10 Index
Citation Counts
10
10
5,917
Rankings
Ranking Based On Selection: 51
Nadja Herger
Metrics
H-Index
i10 Index
Citation Counts
10
10
825
climate science
global climate models
constraining projections
Rankings
Ranking Based On Selection: 52
Mark Constantine Iv
Metrics
H-Index
i10 Index
Citation Counts
7
7
122
Wildfire
Paleoecology
Palynology
Australian environmental change
Climate Change
Rankings
Ranking Based On Selection: 53
Zih-Hong Lin
Metrics
H-Index
i10 Index
Citation Counts
6
4
141
GIS
Spatial Planning
Spatial Statistic
Environmental Management
Green infrastructure
Rankings
Ranking Based On Selection: 54
Maryam Mirabediny
Metrics
H-Index
i10 Index
Citation Counts
5
5
187
Catalysis Synthesis
Environmental Science
Water Treatment
Environmental Chemistry
Rankings
Ranking Based On Selection: 55
Simon Bz Gorta
Metrics
H-Index
i10 Index
Citation Counts
4
2
70
Rankings
Ranking Based On Selection: 56
Elmira Katoozi
Metrics
H-Index
i10 Index
Citation Counts
4
0
27
Separation processes
Water treatment
Resource sustainability
Environmental engineering
Rankings
Ranking Based On Selection: 57
Seyyede Elham Mousavi
Metrics
H-Index
i10 Index
Citation Counts
3
3
64
Rankings
Ranking Based On Selection: 58
Zhizhao He 何志钊
Metrics
H-Index
i10 Index
Citation Counts
3
3
57
Environmental Engineering
Desalination
Capacitive deionization
Electrochemistry
Rankings
Ranking Based On Selection: 59
Timothy Morris
Metrics
H-Index
i10 Index
Citation Counts
2
1
114
Rankings
Ranking Based On Selection: 60
Dympna Cullen
Metrics
H-Index
i10 Index
Citation Counts
2
1
19
Arid ecology
introduced predators
ecological restoration
trophic cascades
small mammals
Rankings
Ranking Based On Selection: 61
Siqi Sheila Sun
Metrics
H-Index
i10 Index
Citation Counts
1
1
27
Environmental Engineering
Public Health
Occupational Lung Diseases
Particle Characterisation