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" (870,057 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: 3
Gregory J Robertson
Conservation Biology
Population Biology
Avian Demographics
Fisheries Stock Assessment
Metrics
H-Index
i10 Index
Citation
51
181
8,505
* Rankings
Ranking Based On Selection: 4
Patricia Chambers
aquatic plants
nutrients
aquatic ecology
aquatic chemistry
Metrics
H-Index
i10 Index
Citation
51
102
9,653
* Rankings
Ranking Based On Selection: 5
Alex J Cannon
applied climatology
climate extremes
hydroclimatology
downscaling
environmental data science
Metrics
H-Index
i10 Index
Citation
50
119
10,652
* Rankings
Ranking Based On Selection: 8
L Mark Hewitt
Environmental toxicology
effects-directed analysis
environmental forensics
monitoring program design
Metrics
H-Index
i10 Index
Citation
43
104
6,347
* Rankings
Ranking Based On Selection: 9
Bin Yu
climate variability and change
climate sensitivity and feedback
atmospheric circulation and teleconnection
monsoon meteorology
Metrics
H-Index
i10 Index
Citation
43
131
7,973

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* Rankings
Ranking Based On Selection: 11
Shailesh Kharol
Atmospheric Aerosols
Air Pollution
Air Quality
Satellite Remote Sensing
Trace Gases
Metrics
H-Index
i10 Index
Citation
40
55
4,338
* Rankings
Ranking Based On Selection: 12
Oleg Saenko
physical oceanography
climate dynamics
ocean modelling
Metrics
H-Index
i10 Index
Citation
36
68
6,391
* Rankings
Ranking Based On Selection: 13
Vincent Fortin
Hydrology
Numerical modelling
Spatial statistics
Statistical post-processing
Metrics
H-Index
i10 Index
Citation
35
77
4,049
* Rankings
Ranking Based On Selection: 14
Ray Nassar
atmosphere
greenhouse gases
emissions
high latitudes
Metrics
H-Index
i10 Index
Citation
34
54
4,920
* Rankings
Ranking Based On Selection: 15
Chun Yang
Oil fingerprinting
environmental forensics
environmental science
analytical chemistry
Metrics
H-Index
i10 Index
Citation
33
69
3,549
* Rankings
Ranking Based On Selection: 16
Evan Richardson
Polar bear ecology and Arctic marine ecosystems
Metrics
H-Index
i10 Index
Citation
32
58
2,934
* Rankings
Ranking Based On Selection: 17
K Andrew Peterson
Ocean Analysis
Ocean Forecasting
Sea ice Forecasting
Ensemble Forecasting
Metrics
H-Index
i10 Index
Citation
32
42
4,980
* Rankings
Ranking Based On Selection: 19
Adam C Smith
Ecological Statistics
Landscape Ecology
Wildlife Population Monitoring
Metrics
H-Index
i10 Index
Citation
28
41
5,833
* Rankings
Ranking Based On Selection: 20
Catarina C Ferreira
Conservation biology
population ecology
game management
lagomorphs
predator-prey relationship
Metrics
H-Index
i10 Index
Citation
24
39
2,114
* Rankings
Ranking Based On Selection: 21
Robert B Brua
aquatic bioassessment
biomonitoring
metabolomics
nutrients
stream ecology
Metrics
H-Index
i10 Index
Citation
23
37
1,442
* Rankings
Ranking Based On Selection: 22
Pudykiewicz Janusz
Meteorology
numerical weather prediction
atmospheric dispersion
inverse problems in geophysics
atmospheric chemistry
Metrics
H-Index
i10 Index
Citation
23
32
2,928
* Rankings
Ranking Based On Selection: 25
Samar G Moussa
Air Quality
Analytical
physical and atmospheric chemistry
Metrics
H-Index
i10 Index
Citation
21
29
1,584
* Rankings
Ranking Based On Selection: 26
M Dabboor|Mohammed Dabboor, M. Daboor, Mohammed Daboor
SAR Missions
Satellites
Space
Remote Sensing
Metrics
H-Index
i10 Index
Citation
19
34
1,484
* Rankings
Ranking Based On Selection: 29
Robin Steenweg
Wildlife Ecology
Conservation
Species At Risk Recovery
Policy
Metrics
H-Index
i10 Index
Citation
17
23
3,144
* Rankings
Ranking Based On Selection: 30
Raphaël A Lavoie
birds
aquatic food webs
stable isotopes
tracking
contaminants
Metrics
H-Index
i10 Index
Citation
16
18
1,837
* Rankings
Ranking Based On Selection: 31
Ruping Mo
Atmospheric Sciences
Fluid Mechanics
Applied Statistics
Metrics
H-Index
i10 Index
Citation
16
23
857
* Rankings
Ranking Based On Selection: 32
Keith Tereszchuk
Atmospheric Chemistry
Satellite Remote Sensing
Molecular Astronomy
Molecular Spectroscopy
Metrics
H-Index
i10 Index
Citation
16
19
693
* Rankings
Ranking Based On Selection: 34
Marie-Anne Hudson
North American Breeding Bird Survey
avian conservation
avian ecology
Metrics
H-Index
i10 Index
Citation
14
18
1,135
* Rankings
Ranking Based On Selection: 36
Serban Danielescu
Water Balance
Contaminant Transport
Groundwater-Surface Water Interactions
Metrics
H-Index
i10 Index
Citation
13
18
805
* Rankings
Ranking Based On Selection: 40
Syed Zahid Husain
Numerical Weather Prediction
High Resolution Forecasting
Land Surface Modelling
Computational Fluid Dynamics
Immersed Bounda
Metrics
H-Index
i10 Index
Citation
12
16
582
* Rankings
Ranking Based On Selection: 41
Rebecca Taylor
Conservation
Climate change
Genomics
Adaptation
Evolutionary genetics
Metrics
H-Index
i10 Index
Citation
10
10
577
* Rankings
Ranking Based On Selection: 44
Yosvany Martinez
Hurricanes
Climate
Turbulence
Weather Prediction
Atmospheric Dynamics
Metrics
H-Index
i10 Index
Citation
10
10
350
* Rankings
Ranking Based On Selection: 48
Jillian D Wettlaufer
Ecology
Ornithology
Evolutionary Ecology
Conservation Biology
Natural History
Metrics
H-Index
i10 Index
Citation
8
7
128
* Rankings
Ranking Based On Selection: 49
Kevin Hannah
ornithology
bioacoustics
conservation
species-at-risk
Metrics
H-Index
i10 Index
Citation
8
6
383
* Rankings
Ranking Based On Selection: 50
Oleksandr Huziy
Atmosphere Ocean modelling
weather
climate change
storm surge and tides
Metrics
H-Index
i10 Index
Citation
7
7
286
* Rankings
Ranking Based On Selection: 51
James M Leach
hydrology
hydrologic modelling
data assimilation
water resources engineering
Metrics
H-Index
i10 Index
Citation
7
7
238
* Rankings
Ranking Based On Selection: 53
Paulson Des Brisay
Conservation Biology
Ecology
Ornithology
Species at Risk
Metrics
H-Index
i10 Index
Citation
7
6
360
* Rankings
Ranking Based On Selection: 54
Scott Mcfatridge
Environmental Policy
Energy Policy
Land & Food Systems
Evaluation
Cost-benefit analysis
Metrics
H-Index
i10 Index
Citation
6
4
322
* Rankings
Ranking Based On Selection: 59
Shuqi Lin
Physical limnology
lake modelling
harmful algal bloom
nutrient and sediment transport
Metrics
H-Index
i10 Index
Citation
5
4
85
* Rankings
Ranking Based On Selection: 60
Shoyon Panday
Numerical Weather Prediction
Fluid dynamics
Mathematical modeling
Hydrodynamic Stability
CFD
Metrics
H-Index
i10 Index
Citation
5
2
71
* Rankings
Ranking Based On Selection: 61
Amanda L Loder
wetlands
conservation & restoration
environmental change
paleoecology
biogeochemistry
Metrics
H-Index
i10 Index
Citation
5
4
103
* Rankings
Ranking Based On Selection: 64
P Bloom
waterfowl biology
habitat ecology
wildlife management
Metrics
H-Index
i10 Index
Citation
5
4
124
* Rankings
Ranking Based On Selection: 65
Sarah M Ludlow
nest survival
grassland birds
abundance
nest placement
bird banding
Metrics
H-Index
i10 Index
Citation
4
4
188
* Rankings
Ranking Based On Selection: 66
Alex Kasperkiewicz
Analytical Chemistry
Mass Spectrometry
Atmospheric Chemistry
Sample Preparation
Green Chemistry
Metrics
H-Index
i10 Index
Citation
4
4
156
* Rankings
Ranking Based On Selection: 68
Sepehr Fathi
Atmospheric Physics
Numerical Methods
Computational Physics
Large Eddy Simulation
Biophysics
Metrics
H-Index
i10 Index
Citation
4
2
46
* Rankings
Ranking Based On Selection: 69
Thomas Milewski
Ensemble data assimilation
Atmospheric dynamics
Stratospheric chemistry
Regional assimilation
Metrics
H-Index
i10 Index
Citation
4
4
116
* Rankings
Ranking Based On Selection: 70
José Arias-Bustamante
Indigenous Rights
Indigenous Science
Climate Change
Land Access
Reciprocal Restoration
Metrics
H-Index
i10 Index
Citation
3
1
25
Rankings
Ranking Based On Selection: 1
Keith A Hobson
Metrics
H-Index
i10 Index
Citation Counts
124
577
62,289
Rankings
Ranking Based On Selection: 2
Grant Gilchrist
Metrics
H-Index
i10 Index
Citation Counts
59
202
10,878
Rankings
Ranking Based On Selection: 3
Gregory J Robertson
Metrics
H-Index
i10 Index
Citation Counts
51
181
8,505
Conservation Biology
Population Biology
Avian Demographics
Fisheries Stock Assessment
Rankings
Ranking Based On Selection: 4
Patricia Chambers
Metrics
H-Index
i10 Index
Citation Counts
51
102
9,653
Rankings
Ranking Based On Selection: 5
Alex J Cannon
Metrics
H-Index
i10 Index
Citation Counts
50
119
10,652
applied climatology
climate extremes
hydroclimatology
downscaling
environmental data science
Rankings
Ranking Based On Selection: 6
Christine A Bishop
Metrics
H-Index
i10 Index
Citation Counts
46
107
7,483
Rankings
Ranking Based On Selection: 8
L Mark Hewitt
Metrics
H-Index
i10 Index
Citation Counts
43
104
6,347
Environmental toxicology
effects-directed analysis
environmental forensics
monitoring program design
Rankings
Ranking Based On Selection: 9
Bin Yu
Metrics
H-Index
i10 Index
Citation Counts
43
131
7,973
climate variability and change
climate sensitivity and feedback
atmospheric circulation and teleconnection
monsoon meteorology
Rankings
Ranking Based On Selection: 10
Kim Fernie
Metrics
H-Index
i10 Index
Citation Counts
43
83
5,273

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
Shailesh Kharol
Metrics
H-Index
i10 Index
Citation Counts
40
55
4,338
Atmospheric Aerosols
Air Pollution
Air Quality
Satellite Remote Sensing
Trace Gases
Rankings
Ranking Based On Selection: 12
Oleg Saenko
Metrics
H-Index
i10 Index
Citation Counts
36
68
6,391
Rankings
Ranking Based On Selection: 13
Vincent Fortin
Metrics
H-Index
i10 Index
Citation Counts
35
77
4,049
Hydrology
Numerical modelling
Spatial statistics
Statistical post-processing
Rankings
Ranking Based On Selection: 14
Ray Nassar
Metrics
H-Index
i10 Index
Citation Counts
34
54
4,920
Rankings
Ranking Based On Selection: 15
Chun Yang
Metrics
H-Index
i10 Index
Citation Counts
33
69
3,549
Oil fingerprinting
environmental forensics
environmental science
analytical chemistry
Rankings
Ranking Based On Selection: 16
Evan Richardson
Metrics
H-Index
i10 Index
Citation Counts
32
58
2,934
Rankings
Ranking Based On Selection: 17
K Andrew Peterson
Metrics
H-Index
i10 Index
Citation Counts
32
42
4,980
Ocean Analysis
Ocean Forecasting
Sea ice Forecasting
Ensemble Forecasting
Rankings
Ranking Based On Selection: 18
Mark C Drever
Metrics
H-Index
i10 Index
Citation Counts
29
58
3,035
Rankings
Ranking Based On Selection: 19
Adam C Smith
Metrics
H-Index
i10 Index
Citation Counts
28
41
5,833
Ecological Statistics
Landscape Ecology
Wildlife Population Monitoring
Rankings
Ranking Based On Selection: 20
Catarina C Ferreira
Metrics
H-Index
i10 Index
Citation Counts
24
39
2,114
Conservation biology
population ecology
game management
lagomorphs
predator-prey relationship
Rankings
Ranking Based On Selection: 21
Robert B Brua
Metrics
H-Index
i10 Index
Citation Counts
23
37
1,442
aquatic bioassessment
biomonitoring
metabolomics
nutrients
stream ecology
Rankings
Ranking Based On Selection: 22
Pudykiewicz Janusz
Metrics
H-Index
i10 Index
Citation Counts
23
32
2,928
Meteorology
numerical weather prediction
atmospheric dispersion
inverse problems in geophysics
atmospheric chemistry
Rankings
Ranking Based On Selection: 23
Samuel A Iverson
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,554
Rankings
Ranking Based On Selection: 24
Joshua King
Metrics
H-Index
i10 Index
Citation Counts
21
23
1,295
Rankings
Ranking Based On Selection: 25
Samar G Moussa
Metrics
H-Index
i10 Index
Citation Counts
21
29
1,584
Air Quality
Analytical
physical and atmospheric chemistry
Rankings
Ranking Based On Selection: 26
M Dabboor|Mohammed Dabboor, M. Daboor, Mohammed Daboor
Metrics
H-Index
i10 Index
Citation Counts
19
34
1,484
SAR Missions
Satellites
Space
Remote Sensing
Rankings
Ranking Based On Selection: 27
Jun Meng
Metrics
H-Index
i10 Index
Citation Counts
18
23
1,228
Rankings
Ranking Based On Selection: 28
Stacey A Robinson
Metrics
H-Index
i10 Index
Citation Counts
18
31
1,163
Rankings
Ranking Based On Selection: 29
Robin Steenweg
Metrics
H-Index
i10 Index
Citation Counts
17
23
3,144
Wildlife Ecology
Conservation
Species At Risk Recovery
Policy
Rankings
Ranking Based On Selection: 30
Raphaël A Lavoie
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,837
birds
aquatic food webs
stable isotopes
tracking
contaminants
Rankings
Ranking Based On Selection: 31
Ruping Mo
Metrics
H-Index
i10 Index
Citation Counts
16
23
857
Rankings
Ranking Based On Selection: 32
Keith Tereszchuk
Metrics
H-Index
i10 Index
Citation Counts
16
19
693
Atmospheric Chemistry
Satellite Remote Sensing
Molecular Astronomy
Molecular Spectroscopy
Rankings
Ranking Based On Selection: 33
Christian Seiler
Metrics
H-Index
i10 Index
Citation Counts
15
19
1,851
Rankings
Ranking Based On Selection: 34
Marie-Anne Hudson
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,135
North American Breeding Bird Survey
avian conservation
avian ecology
Rankings
Ranking Based On Selection: 35
Scott A Flemming
Metrics
H-Index
i10 Index
Citation Counts
14
17
467
Rankings
Ranking Based On Selection: 36
Serban Danielescu
Metrics
H-Index
i10 Index
Citation Counts
13
18
805
Water Balance
Contaminant Transport
Groundwater-Surface Water Interactions
Rankings
Ranking Based On Selection: 37
Elizaveta Malinina
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,374
Rankings
Ranking Based On Selection: 38
Alain Malo
Metrics
H-Index
i10 Index
Citation Counts
13
15
961
Rankings
Ranking Based On Selection: 39
Josep Maria Aparicio
Metrics
H-Index
i10 Index
Citation Counts
13
15
764
Rankings
Ranking Based On Selection: 40
Syed Zahid Husain
Metrics
H-Index
i10 Index
Citation Counts
12
16
582
Numerical Weather Prediction
High Resolution Forecasting
Land Surface Modelling
Computational Fluid Dynamics
Immersed Bounda
Rankings
Ranking Based On Selection: 41
Rebecca Taylor
Metrics
H-Index
i10 Index
Citation Counts
10
10
577
Conservation
Climate change
Genomics
Adaptation
Evolutionary genetics
Rankings
Ranking Based On Selection: 44
Yosvany Martinez
Metrics
H-Index
i10 Index
Citation Counts
10
10
350
Hurricanes
Climate
Turbulence
Weather Prediction
Atmospheric Dynamics
Rankings
Ranking Based On Selection: 45
Thomas Reid
Metrics
H-Index
i10 Index
Citation Counts
9
9
242
Rankings
Ranking Based On Selection: 47
Ahmed Mahidjiba
Metrics
H-Index
i10 Index
Citation Counts
9
9
360
Rankings
Ranking Based On Selection: 48
Jillian D Wettlaufer
Metrics
H-Index
i10 Index
Citation Counts
8
7
128
Ecology
Ornithology
Evolutionary Ecology
Conservation Biology
Natural History
Rankings
Ranking Based On Selection: 49
Kevin Hannah
Metrics
H-Index
i10 Index
Citation Counts
8
6
383
ornithology
bioacoustics
conservation
species-at-risk
Rankings
Ranking Based On Selection: 50
Oleksandr Huziy
Metrics
H-Index
i10 Index
Citation Counts
7
7
286
Atmosphere Ocean modelling
weather
climate change
storm surge and tides
Rankings
Ranking Based On Selection: 51
James M Leach
Metrics
H-Index
i10 Index
Citation Counts
7
7
238
hydrology
hydrologic modelling
data assimilation
water resources engineering
Rankings
Ranking Based On Selection: 52
Michelle Filiatrault
Metrics
H-Index
i10 Index
Citation Counts
7
7
168
Rankings
Ranking Based On Selection: 53
Paulson Des Brisay
Metrics
H-Index
i10 Index
Citation Counts
7
6
360
Conservation Biology
Ecology
Ornithology
Species at Risk
Rankings
Ranking Based On Selection: 54
Scott Mcfatridge
Metrics
H-Index
i10 Index
Citation Counts
6
4
322
Environmental Policy
Energy Policy
Land & Food Systems
Evaluation
Cost-benefit analysis
Rankings
Ranking Based On Selection: 55
Christopher M Sharp
Metrics
H-Index
i10 Index
Citation Counts
6
3
98
Rankings
Ranking Based On Selection: 56
Stephen Hill
Metrics
H-Index
i10 Index
Citation Counts
5
5
907
Rankings
Ranking Based On Selection: 57
Rabah Aider
Metrics
H-Index
i10 Index
Citation Counts
5
4
285
Rankings
Ranking Based On Selection: 58
Melissa Cholette
Metrics
H-Index
i10 Index
Citation Counts
5
4
115
Rankings
Ranking Based On Selection: 59
Shuqi Lin
Metrics
H-Index
i10 Index
Citation Counts
5
4
85
Physical limnology
lake modelling
harmful algal bloom
nutrient and sediment transport
Rankings
Ranking Based On Selection: 60
Shoyon Panday
Metrics
H-Index
i10 Index
Citation Counts
5
2
71
Numerical Weather Prediction
Fluid dynamics
Mathematical modeling
Hydrodynamic Stability
CFD
Rankings
Ranking Based On Selection: 61
Amanda L Loder
Metrics
H-Index
i10 Index
Citation Counts
5
4
103
wetlands
conservation & restoration
environmental change
paleoecology
biogeochemistry
Rankings
Ranking Based On Selection: 62
Kristjan Onu
Metrics
H-Index
i10 Index
Citation Counts
5
4
374
Rankings
Ranking Based On Selection: 63
Christine Mcclelland
Metrics
H-Index
i10 Index
Citation Counts
5
4
185
Rankings
Ranking Based On Selection: 64
P Bloom
Metrics
H-Index
i10 Index
Citation Counts
5
4
124
Rankings
Ranking Based On Selection: 65
Sarah M Ludlow
Metrics
H-Index
i10 Index
Citation Counts
4
4
188
nest survival
grassland birds
abundance
nest placement
bird banding
Rankings
Ranking Based On Selection: 66
Alex Kasperkiewicz
Metrics
H-Index
i10 Index
Citation Counts
4
4
156
Analytical Chemistry
Mass Spectrometry
Atmospheric Chemistry
Sample Preparation
Green Chemistry
Rankings
Ranking Based On Selection: 67
Sonesinh Keobouasone
Metrics
H-Index
i10 Index
Citation Counts
4
2
82
Rankings
Ranking Based On Selection: 68
Sepehr Fathi
Metrics
H-Index
i10 Index
Citation Counts
4
2
46
Atmospheric Physics
Numerical Methods
Computational Physics
Large Eddy Simulation
Biophysics
Rankings
Ranking Based On Selection: 69
Thomas Milewski
Metrics
H-Index
i10 Index
Citation Counts
4
4
116
Ensemble data assimilation
Atmospheric dynamics
Stratospheric chemistry
Regional assimilation
Rankings
Ranking Based On Selection: 70
José Arias-Bustamante
Metrics
H-Index
i10 Index
Citation Counts
3
1
25
Indigenous Rights
Indigenous Science
Climate Change
Land Access
Reciprocal Restoration
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