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
James Randerson
carbon cycle
biogeochemistry
climate change
land use change
sustainability
Metrics
H-Index
i10 Index
Citation
115
256
72,515
* Rankings
Ranking Based On Selection :2
Eric Rignot
Cryosphere
Greenland
Antarctica
Glaciology
Polar Science
Metrics
H-Index
i10 Index
Citation
104
293
51,248
* Rankings
Ranking Based On Selection :4
Steven J Davis
macro-energy systems
food systems
climate impacts
sustainability
climate solutions
Metrics
H-Index
i10 Index
Citation
80
152
36,867
Jasper A Vrugt
hydrology
ecology
geophysics
soil physics
uncertainty analysis
Metrics
H-Index
i10 Index
Citation
71
134
25,404
Charles S Zender
Climate
Microphysics
Surface Exchange/Melt
Data Science
Metrics
H-Index
i10 Index
Citation
57
99
23,214
Jin Yi Yu
climate dynamics
climate modeling
climate diagnosis
Metrics
H-Index
i10 Index
Citation
52
111
12,765
* Rankings
Ranking Based On Selection :11
Xiaomei Xu
Isotope Geochemistry
Atmospheric Chemistry
Carbon Cycle
Radiocarbon
AMS
Metrics
H-Index
i10 Index
Citation
42
139
7,128
* Rankings
Ranking Based On Selection :12
Claudia I Czimczik
permafrost carbon
radiocarbon
wildfire
climate change
fossil carbon emissions
Metrics
H-Index
i10 Index
Citation
42
67
13,561
* Rankings
Ranking Based On Selection :14
Michael S Pritchard
Climate science
cloud physics
cloud superparameterization
machine learning
high performance computing
Metrics
H-Index
i10 Index
Citation
33
62
4,337
* Rankings
Ranking Based On Selection :15
Katherine Mackey
Phytoplankton biogeography
photosynthesis
biogeochemistry
atmospheric deposition
nutrient cycling
Metrics
H-Index
i10 Index
Citation
30
40
3,231
* Rankings
Ranking Based On Selection :17
Lisa B Grant Ludwig
San Andreas fault
earthquakes
paleoseismology
disasters
public health
Metrics
H-Index
i10 Index
Citation
27
39
2,596
Geruo A
Geodesy
terrestrial hydrology
water resource
glacial isostatic adjustment
ecosystem coupling with terrestrial hydrology
Metrics
H-Index
i10 Index
Citation
17
22
4,661
Christopher I Olivares
Bioremediation
Environmental Chemistry
Environmental Biotechnology
Biogeochemistry
Toxicology
Metrics
H-Index
i10 Index
Citation
17
25
1,044
Candelaria Bergero
Net-zero
Decarbonization
CDR
Environmental Policy
Integrated Assessment
Metrics
H-Index
i10 Index
Citation
7
7
360
Stephen J Breen
hydrology
contaminant transport
multiphase flow
geophysics
Metrics
H-Index
i10 Index
Citation
5
5
158
Gergana Mouteva
Earth System Science
Biogeochemical Cycles
Atmospheric Chemistry
Fire Ecology
Metrics
H-Index
i10 Index
Citation
5
5
148
Brittni Lin Bertolet
carbon biogeochemistry
microbial community ecology
global change
Metrics
H-Index
i10 Index
Citation
4
4
135
Dervla Meegan Kumar
climate dynamics
paleoclimate
organic geochemistry
paleoceanography
Metrics
H-Index
i10 Index
Citation
4
2
69
Rankings
Ranking Based On Selection: 1
James Randerson
Metrics
H-Index
i10 Index
Citation Counts
115
256
72,515
carbon cycle
biogeochemistry
climate change
land use change
sustainability
Rankings
Ranking Based On Selection: 2
Eric Rignot
Metrics
H-Index
i10 Index
Citation Counts
104
293
51,248
Cryosphere
Greenland
Antarctica
Glaciology
Polar Science
Rankings
Ranking Based On Selection: 4
Steven J Davis
Metrics
H-Index
i10 Index
Citation Counts
80
152
36,867
macro-energy systems
food systems
climate impacts
sustainability
climate solutions
Rankings
Ranking Based On Selection: 5
Jasper A Vrugt
Metrics
H-Index
i10 Index
Citation Counts
71
134
25,404
hydrology
ecology
geophysics
soil physics
uncertainty analysis
Rankings
Ranking Based On Selection: 6
Jefferson Keith Moore
Metrics
H-Index
i10 Index
Citation Counts
61
89
19,009
Rankings
Ranking Based On Selection: 7
Charles S Zender
Metrics
H-Index
i10 Index
Citation Counts
57
99
23,214
Climate
Microphysics
Surface Exchange/Melt
Data Science
Rankings
Ranking Based On Selection: 8
Isabella Velicogna
Metrics
H-Index
i10 Index
Citation Counts
56
95
22,326
Rankings
Ranking Based On Selection: 9
Jin Yi Yu
Metrics
H-Index
i10 Index
Citation Counts
52
111
12,765
climate dynamics
climate modeling
climate diagnosis
Rankings
Ranking Based On Selection: 10
William Reeburgh
Metrics
H-Index
i10 Index
Citation Counts
51
81
15,559
Rankings
Ranking Based On Selection: 11
Xiaomei Xu
Metrics
H-Index
i10 Index
Citation Counts
42
139
7,128
Isotope Geochemistry
Atmospheric Chemistry
Carbon Cycle
Radiocarbon
AMS
Rankings
Ranking Based On Selection: 12
Claudia I Czimczik
Metrics
H-Index
i10 Index
Citation Counts
42
67
13,561
permafrost carbon
radiocarbon
wildfire
climate change
fossil carbon emissions
Rankings
Ranking Based On Selection: 13
Francois Primeau
Metrics
H-Index
i10 Index
Citation Counts
40
73
7,821
Rankings
Ranking Based On Selection: 14
Michael S Pritchard
Metrics
H-Index
i10 Index
Citation Counts
33
62
4,337
Climate science
cloud physics
cloud superparameterization
machine learning
high performance computing
Rankings
Ranking Based On Selection: 15
Katherine Mackey
Metrics
H-Index
i10 Index
Citation Counts
30
40
3,231
Phytoplankton biogeography
photosynthesis
biogeochemistry
atmospheric deposition
nutrient cycling
Rankings
Ranking Based On Selection: 16
Kathleen R Johnson
Metrics
H-Index
i10 Index
Citation Counts
27
41
5,637
Rankings
Ranking Based On Selection: 17
Lisa B Grant Ludwig
Metrics
H-Index
i10 Index
Citation Counts
27
39
2,596
San Andreas fault
earthquakes
paleoseismology
disasters
public health
Rankings
Ranking Based On Selection: 19
Jonathan A Wang
Metrics
H-Index
i10 Index
Citation Counts
20
25
1,592
Rankings
Ranking Based On Selection: 20
Geruo A
Metrics
H-Index
i10 Index
Citation Counts
17
22
4,661
Geodesy
terrestrial hydrology
water resource
glacial isostatic adjustment
ecosystem coupling with terrestrial hydrology
Rankings
Ranking Based On Selection: 21
Christopher I Olivares
Metrics
H-Index
i10 Index
Citation Counts
17
25
1,044
Bioremediation
Environmental Chemistry
Environmental Biotechnology
Biogeochemistry
Toxicology
Rankings
Ranking Based On Selection: 22
Juno Hsu
Metrics
H-Index
i10 Index
Citation Counts
17
19
1,961
Rankings
Ranking Based On Selection: 23
Alexandra L Noronha
Metrics
H-Index
i10 Index
Citation Counts
11
11
639
Earth System Science
Isotope Geochemistry
Radiocarbon
Rankings
Ranking Based On Selection: 24
Yuna Lim
Metrics
H-Index
i10 Index
Citation Counts
8
7
719
Rankings
Ranking Based On Selection: 25
Candelaria Bergero
Metrics
H-Index
i10 Index
Citation Counts
7
7
360
Net-zero
Decarbonization
CDR
Environmental Policy
Integrated Assessment
Rankings
Ranking Based On Selection: 26
Siavash Zare
Metrics
H-Index
i10 Index
Citation Counts
7
6
226
Rankings
Ranking Based On Selection: 27
Stephen J Breen
Metrics
H-Index
i10 Index
Citation Counts
5
5
158
hydrology
contaminant transport
multiphase flow
geophysics
Rankings
Ranking Based On Selection: 28
Eduardo M Choreño-Parra
Metrics
H-Index
i10 Index
Citation Counts
5
4
101
Rankings
Ranking Based On Selection: 29
Gergana Mouteva
Metrics
H-Index
i10 Index
Citation Counts
5
5
148
Earth System Science
Biogeochemical Cycles
Atmospheric Chemistry
Fire Ecology
Rankings
Ranking Based On Selection: 30
Brittni Lin Bertolet
Metrics
H-Index
i10 Index
Citation Counts
4
4
135
carbon biogeochemistry
microbial community ecology
global change
Rankings
Ranking Based On Selection: 31
Dervla Meegan Kumar
Metrics
H-Index
i10 Index
Citation Counts
4
2
69
climate dynamics
paleoclimate
organic geochemistry
paleoceanography
Rankings
Ranking Based On Selection: 32
Cindy Yañez
Metrics
H-Index
i10 Index
Citation Counts
3
1
30
Rankings
Ranking Based On Selection: 34
Andie O Nugent|Andie Nugent
Metrics
H-Index
i10 Index
Citation Counts
2
1
45
Soil Ecology
Biogeochemistry
Microbial Ecology
Rankings
Ranking Based On Selection: 36
Connor Broaddus
Metrics
H-Index
i10 Index
Citation Counts
1
1
12
Rankings
Ranking Based On Selection: 37
Elizabeth W Patterson
Metrics
H-Index
i10 Index
Citation Counts
1
0
9