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" (870,053 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
Hans Poertner
Ecophysiology
Molecular to physiological bases of ecological processes. Role of climate factors (temperature
carbon dioxide
o
Metrics
H-Index
i10 Index
Citation
129
456
93,057
* Rankings
Ranking Based On Selection: 2
Boetius Antje
polar science
oceanography
deep-sea research
environmental microbiology
carbon cycle
Metrics
H-Index
i10 Index
Citation
89
203
33,704

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* Rankings
Ranking Based On Selection: 21
Jelle Bijma
Marine biogeosciences
Global biogeochemical cycles
carbon cycle (pertubations)
Ocean acidification
Biomineralisation
Metrics
H-Index
i10 Index
Citation
56
106
12,580
* Rankings
Ranking Based On Selection: 23
Manfred Mudelsee
Climate
Paleoclimate
Paleoclimate Dynamics
Extreme Events
Time Series Analysis
Metrics
H-Index
i10 Index
Citation
55
90
15,899
* Rankings
Ranking Based On Selection: 33
Martin Werner
Paleoclimate Dynamics
Earth System Modeling
Stable Water Isotopes
Biogeochemical Tracers
Metrics
H-Index
i10 Index
Citation
51
107
14,085
* Rankings
Ranking Based On Selection: 52
Hartmut Hellmer
Southern Ocean
numerical ocean modeling
ocean-ice shelf interaction
thermohaline circulation
climate change
Metrics
H-Index
i10 Index
Citation
45
86
7,841
* Rankings
Ranking Based On Selection: 57
Christian Bock
Comparative Physiology
Ecophysiology
MRI
NMR
Thermal Biology
Metrics
H-Index
i10 Index
Citation
42
82
6,206
* Rankings
Ranking Based On Selection: 58
Qiang Wang
Physical Oceanography
Climate Sciences
Ocean Model Development
Ocean & Sea Ice Dynamics
Metrics
H-Index
i10 Index
Citation
41
85
5,646
* Rankings
Ranking Based On Selection: 62
Morten Iversen
Biological carbon pump
ecosystem structure and ecology
microbial dynmaics
underwater technology
Metrics
H-Index
i10 Index
Citation
40
77
5,092
* Rankings
Ranking Based On Selection: 70
Bettina Meyer
Resilience polar pelagic invertebrates ( Antarctic Krill
Salps
Calanus)
Polar marine Chronobiolog
Metrics
H-Index
i10 Index
Citation
39
73
4,528
* Rankings
Ranking Based On Selection: 80
Felix Christopher Mark
Marine Animal Ecophysiologist
Integrative ecophysiology of marine fish & cephalopods - aerobic energy metabolism - climate chan
Metrics
H-Index
i10 Index
Citation
37
61
5,055
* Rankings
Ranking Based On Selection: 81
Tido Semmler
High resolution climate modeling
Southern Ocean - ice shelf - ice sheet interactions
polar - mid-latitude linkages
Metrics
H-Index
i10 Index
Citation
37
64
9,000
* Rankings
Ranking Based On Selection: 89
Stephan Frickenhaus
Data Analytics
Numerical Mathematics
High Performance Computing
Computational Sciences
Metrics
H-Index
i10 Index
Citation
36
58
3,846
* Rankings
Ranking Based On Selection: 91
Gabriele Uenzelmann-Neben
Marine Geophysics
Sediment transport processes
Physcial Oceanography
reconstruction of palaeo-circulation
Large Igenous Provinces
Metrics
H-Index
i10 Index
Citation
36
71
3,320
* Rankings
Ranking Based On Selection: 93
Thomas Laepple
Paleoclimate Dynamics
Climate variability
Quantitative analysis and explanation of paleo-proxy data
Metrics
H-Index
i10 Index
Citation
35
62
5,992
Rankings
Ranking Based On Selection: 1
Hans Poertner
Metrics
H-Index
i10 Index
Citation Counts
129
456
93,057
Ecophysiology
Molecular to physiological bases of ecological processes. Role of climate factors (temperature
carbon dioxide
o
Rankings
Ranking Based On Selection: 2
Boetius Antje
Metrics
H-Index
i10 Index
Citation Counts
89
203
33,704
polar science
oceanography
deep-sea research
environmental microbiology
carbon cycle
Rankings
Ranking Based On Selection: 3
Frank Oliver Glöckner
Metrics
H-Index
i10 Index
Citation Counts
85
174
87,684
Earth System Data Science
Data Management
Biodiversity
Ecosystems Biology
Rankings
Ranking Based On Selection: 4
Gerrit Lohmann
Metrics
H-Index
i10 Index
Citation Counts
78
283
20,442
Paleoclimate Dynamics
Ocean
Climate Change
Polar Science
Earth System Modeling
Rankings
Ranking Based On Selection: 5
Gerhard Kattner
Metrics
H-Index
i10 Index
Citation Counts
76
183
24,938
Rankings
Ranking Based On Selection: 6
Guido Grosse
Metrics
H-Index
i10 Index
Citation Counts
75
192
25,423
Permafrost
remote sensing
Arctic climate change
permafrost carbon
thermokarst
Rankings
Ranking Based On Selection: 7
Ruediger Stein
Metrics
H-Index
i10 Index
Citation Counts
75
274
21,957
Rankings
Ranking Based On Selection: 8
Allan Cembella
Metrics
H-Index
i10 Index
Citation Counts
72
194
18,008
Chemical ecology
marine phytoplankton
toxins
biological oceanography
Rankings
Ranking Based On Selection: 9
Ulrike Herzschuh
Metrics
H-Index
i10 Index
Citation Counts
68
218
14,679
Rankings
Ranking Based On Selection: 10
Victor Smetacek
Metrics
H-Index
i10 Index
Citation Counts
68
117
29,580

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
Julia Boike
Metrics
H-Index
i10 Index
Citation Counts
66
143
13,646
Permafrost Physical Processes
Rankings
Ranking Based On Selection: 12
Gunnar Gerdts
Metrics
H-Index
i10 Index
Citation Counts
65
126
25,230
Molecular Microbial Ecology
Environmental Microbiology
Rankings
Ranking Based On Selection: 13
Andreas Mackensen
Metrics
H-Index
i10 Index
Citation Counts
64
138
13,094
Micropaleontology
Paleoceanography
Foraminifera
Micropalaeontology
Rankings
Ranking Based On Selection: 15
Lutz Schirrmeister
Metrics
H-Index
i10 Index
Citation Counts
63
148
12,207
Permafrost
Quaternary environment
Arctic
Rankings
Ranking Based On Selection: 16
Thomas Jung
Metrics
H-Index
i10 Index
Citation Counts
60
145
12,704
Physics of the climate system and climate modelling
Rankings
Ranking Based On Selection: 17
Ralf Tiedemann
Metrics
H-Index
i10 Index
Citation Counts
59
135
11,749
Geosciences
Paleoclimatology
Paleoceanography
Marine Geology
Rankings
Ranking Based On Selection: 18
Rankings
Ranking Based On Selection: 19
Elvira Poloczanska
Metrics
H-Index
i10 Index
Citation Counts
57
91
24,376
Rankings
Ranking Based On Selection: 20
Rankings
Ranking Based On Selection: 21
Jelle Bijma
Metrics
H-Index
i10 Index
Citation Counts
56
106
12,580
Marine biogeosciences
Global biogeochemical cycles
carbon cycle (pertubations)
Ocean acidification
Biomineralisation
Rankings
Ranking Based On Selection: 22
Uwe John
Metrics
H-Index
i10 Index
Citation Counts
55
139
11,807
Rankings
Ranking Based On Selection: 23
Manfred Mudelsee
Metrics
H-Index
i10 Index
Citation Counts
55
90
15,899
Climate
Paleoclimate
Paleoclimate Dynamics
Extreme Events
Time Series Analysis
Rankings
Ranking Based On Selection: 24
Bjoern Rost|Bjoern Rost
Metrics
H-Index
i10 Index
Citation Counts
55
89
14,804
Phytoplankton
photosynthesis
calcification
ocean acidification
biogeochemical cycles
Rankings
Ranking Based On Selection: 25
Reiner Schlitzer
Metrics
H-Index
i10 Index
Citation Counts
55
88
20,014
Rankings
Ranking Based On Selection: 26
Dieter Wolf-Gladrow
Metrics
H-Index
i10 Index
Citation Counts
55
108
18,011
Rankings
Ranking Based On Selection: 27
Hanno Meyer
Metrics
H-Index
i10 Index
Citation Counts
54
147
9,140
Rankings
Ranking Based On Selection: 28
Annette Rinke
Metrics
H-Index
i10 Index
Citation Counts
54
132
20,450
Rankings
Ranking Based On Selection: 30
Maarten Boersma
Metrics
H-Index
i10 Index
Citation Counts
53
144
9,906
Rankings
Ranking Based On Selection: 33
Martin Werner
Metrics
H-Index
i10 Index
Citation Counts
51
107
14,085
Paleoclimate Dynamics
Earth System Modeling
Stable Water Isotopes
Biogeochemical Tracers
Rankings
Ranking Based On Selection: 34
Sabine Kasten
Metrics
H-Index
i10 Index
Citation Counts
51
99
8,256
Sediment Geochemistry
Biogeochemistry
Paleoceanography
Deep Biosphere
Rankings
Ranking Based On Selection: 35
Anya M Waite
Metrics
H-Index
i10 Index
Citation Counts
51
125
10,343
Rankings
Ranking Based On Selection: 36
Frank Lamy
Metrics
H-Index
i10 Index
Citation Counts
50
98
9,103
Rankings
Ranking Based On Selection: 37
Sergey Danilov
Metrics
H-Index
i10 Index
Citation Counts
49
134
7,591
geophysical fluid dynamics
numerical ocean modeling on unstructured meshes
Rankings
Ranking Based On Selection: 38
Lars Kaleschke
Metrics
H-Index
i10 Index
Citation Counts
49
93
8,991
Sea ice
climate
earth observation
Rankings
Ranking Based On Selection: 39
Jens Matthiessen
Metrics
H-Index
i10 Index
Citation Counts
49
88
10,751
Arctic Ocean geology and paleoceanography
palynology
biostratigraphy
Rankings
Ranking Based On Selection: 40
Miller,H.
Metrics
H-Index
i10 Index
Citation Counts
49
101
10,529
Rankings
Ranking Based On Selection: 41
Melanie Bergmann
Metrics
H-Index
i10 Index
Citation Counts
48
85
12,071
Rankings
Ranking Based On Selection: 42
Astrid Bracher
Metrics
H-Index
i10 Index
Citation Counts
48
124
6,314
Marine Primary Production
Phytoplankton Functional Types
Ocean Optics
Satellite V
Rankings
Ranking Based On Selection: 43
Markus Rex
Metrics
H-Index
i10 Index
Citation Counts
48
88
7,758
climate system
atmospheric physics
atmospheric chemistry
Rankings
Ranking Based On Selection: 46
Marcel Nicolaus
Metrics
H-Index
i10 Index
Citation Counts
46
94
6,799
Rankings
Ranking Based On Selection: 47
Gesine Mollenhauer
Metrics
H-Index
i10 Index
Citation Counts
46
103
6,666
Rankings
Ranking Based On Selection: 48
Mario Hoppema
Metrics
H-Index
i10 Index
Citation Counts
46
108
15,656
Rankings
Ranking Based On Selection: 49
Ruediger Gerdes
Metrics
H-Index
i10 Index
Citation Counts
46
83
8,228
Rankings
Ranking Based On Selection: 50
Ilka Peeken
Metrics
H-Index
i10 Index
Citation Counts
45
102
8,131
Polar ecosytems
sea ice biota
sea ice biogeochemistry
Rankings
Ranking Based On Selection: 51
Boris P. Koch
Metrics
H-Index
i10 Index
Citation Counts
45
86
11,634
Rankings
Ranking Based On Selection: 52
Hartmut Hellmer
Metrics
H-Index
i10 Index
Citation Counts
45
86
7,841
Southern Ocean
numerical ocean modeling
ocean-ice shelf interaction
thermohaline circulation
climate change
Rankings
Ranking Based On Selection: 53
Stefan Hendricks
Metrics
H-Index
i10 Index
Citation Counts
44
117
8,195
Rankings
Ranking Based On Selection: 55
Mathias Wegner
Metrics
H-Index
i10 Index
Citation Counts
43
79
6,708
Rankings
Ranking Based On Selection: 56
Kirsten Fahl
Metrics
H-Index
i10 Index
Citation Counts
43
83
5,384
Rankings
Ranking Based On Selection: 57
Christian Bock
Metrics
H-Index
i10 Index
Citation Counts
42
82
6,206
Comparative Physiology
Ecophysiology
MRI
NMR
Thermal Biology
Rankings
Ranking Based On Selection: 58
Qiang Wang
Metrics
H-Index
i10 Index
Citation Counts
41
85
5,646
Physical Oceanography
Climate Sciences
Ocean Model Development
Ocean & Sea Ice Dynamics
Rankings
Ranking Based On Selection: 59
Hugues Lantuit
Metrics
H-Index
i10 Index
Citation Counts
41
76
7,645
Arctic
coastal erosion
remote sensing
permafrost
thermokarst
Rankings
Ranking Based On Selection: 60
Martin Losch
Metrics
H-Index
i10 Index
Citation Counts
41
82
5,441
Rankings
Ranking Based On Selection: 61
Michael Karcher
Metrics
H-Index
i10 Index
Citation Counts
41
80
5,861
Arctic climate research
oceanography
modeling
observations
Rankings
Ranking Based On Selection: 62
Morten Iversen
Metrics
H-Index
i10 Index
Citation Counts
40
77
5,092
Biological carbon pump
ecosystem structure and ecology
microbial dynmaics
underwater technology
Rankings
Ranking Based On Selection: 63
Moritz Langer
Metrics
H-Index
i10 Index
Citation Counts
40
68
4,763
Rankings
Ranking Based On Selection: 64
Martin Graeve
Metrics
H-Index
i10 Index
Citation Counts
40
92
6,218
Rankings
Ranking Based On Selection: 65
Olaf Eisen
Metrics
H-Index
i10 Index
Citation Counts
40
96
5,177
Rankings
Ranking Based On Selection: 66
Matthias Köck
Metrics
H-Index
i10 Index
Citation Counts
40
103
4,954
Rankings
Ranking Based On Selection: 67
Friedrich Buchholz
Metrics
H-Index
i10 Index
Citation Counts
40
85
4,099
Marine Zoology
Functional Ecology
Adaptive Diversity
Crustaceans
Rankings
Ranking Based On Selection: 68
Gernot Nehrke
Metrics
H-Index
i10 Index
Citation Counts
39
75
5,006
Rankings
Ranking Based On Selection: 69
Gesche Krause
Metrics
H-Index
i10 Index
Citation Counts
39
91
4,742
Science-Stakeholder Interactions
Rankings
Ranking Based On Selection: 70
Bettina Meyer
Metrics
H-Index
i10 Index
Citation Counts
39
73
4,528
Resilience polar pelagic invertebrates ( Antarctic Krill
Salps
Calanus)
Polar marine Chronobiolog
Rankings
Ranking Based On Selection: 71
Diekmann B
Metrics
H-Index
i10 Index
Citation Counts
39
57
4,562
Rankings
Ranking Based On Selection: 72
Dmitry Sein
Metrics
H-Index
i10 Index
Citation Counts
38
82
4,477
Rankings
Ranking Based On Selection: 74
Pier Overduin
Metrics
H-Index
i10 Index
Citation Counts
38
65
5,055
geography geophysics permafrost Arctic marine coast
Rankings
Ranking Based On Selection: 75
Antje Wichels
Metrics
H-Index
i10 Index
Citation Counts
38
63
7,418
Rankings
Ranking Based On Selection: 76
Klaus Valentin
Metrics
H-Index
i10 Index
Citation Counts
38
63
11,752
Rankings
Ranking Based On Selection: 78
Monica Ionita
Metrics
H-Index
i10 Index
Citation Counts
37
72
5,248
Rankings
Ranking Based On Selection: 79
Autun Purser
Metrics
H-Index
i10 Index
Citation Counts
37
60
4,622
Rankings
Ranking Based On Selection: 80
Marine Animal Ecophysiologist
Integrative ecophysiology of marine fish & cephalopods - aerobic energy metabolism - climate chan
Rankings
Ranking Based On Selection: 81
Tido Semmler
Metrics
H-Index
i10 Index
Citation Counts
37
64
9,000
High resolution climate modeling
Southern Ocean - ice shelf - ice sheet interactions
polar - mid-latitude linkages
Rankings
Ranking Based On Selection: 82
Bela H. Buck
Metrics
H-Index
i10 Index
Citation Counts
37
72
4,966
Offshore Aquaculture
IMTA
bivalve & seaweed cultivation
Rankings
Ranking Based On Selection: 83
Graeme Eagles
Metrics
H-Index
i10 Index
Citation Counts
37
60
5,294
Earth Sciences
Geology
Geophysics
Tectonics
Plate tectonics
Rankings
Ranking Based On Selection: 84
Dieter Piepenburg
Metrics
H-Index
i10 Index
Citation Counts
37
65
4,970
polar ecology
marine biology
biological oceanography
benthos
Rankings
Ranking Based On Selection: 85
Hannes Grobe
Metrics
H-Index
i10 Index
Citation Counts
37
63
4,837
Rankings
Ranking Based On Selection: 86
Peter Von Der Gathen
Metrics
H-Index
i10 Index
Citation Counts
37
67
5,615
Rankings
Ranking Based On Selection: 87
Gregor Knorr
Metrics
H-Index
i10 Index
Citation Counts
36
56
5,435
Rankings
Ranking Based On Selection: 88
Lars Gutow
Metrics
H-Index
i10 Index
Citation Counts
36
67
12,179
Rankings
Ranking Based On Selection: 89
Stephan Frickenhaus
Metrics
H-Index
i10 Index
Citation Counts
36
58
3,846
Data Analytics
Numerical Mathematics
High Performance Computing
Computational Sciences
Rankings
Ranking Based On Selection: 91
Marine Geophysics
Sediment transport processes
Physcial Oceanography
reconstruction of palaeo-circulation
Large Igenous Provinces
Rankings
Ranking Based On Selection: 93
Thomas Laepple
Metrics
H-Index
i10 Index
Citation Counts
35
62
5,992
Paleoclimate Dynamics
Climate variability
Quantitative analysis and explanation of paleo-proxy data
Rankings
Ranking Based On Selection: 94
Inka Bartsch
Metrics
H-Index
i10 Index
Citation Counts
35
66
4,559
Rankings
Ranking Based On Selection: 95
Katja Metfies
Metrics
H-Index
i10 Index
Citation Counts
35
73
3,522
Rankings
Ranking Based On Selection: 96
Magnus Lucassen
Metrics
H-Index
i10 Index
Citation Counts
35
61
4,819
Rankings
Ranking Based On Selection: 97
Nikolay Koldunov
Metrics
H-Index
i10 Index
Citation Counts
34
58
2,979
Rankings
Ranking Based On Selection: 98
Christoph Held
Metrics
H-Index
i10 Index
Citation Counts
34
56
2,916
Polar Marine Biology
Molecular Phylogeny
Population Genetics
Phylogeography
Rankings
Ranking Based On Selection: 99
Barbara Niehoff
Metrics
H-Index
i10 Index
Citation Counts
34
60
4,069
Rankings
Ranking Based On Selection: 100
Claire Treat
Metrics
H-Index
i10 Index
Citation Counts
33
45
8,931
biogeochemistry
greenhouse gases
modeling
wetlands
methane