Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers Citation Engineering & Technology / Earth Sciences Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Environmental Geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
171,547
147,291
0.859
* Total Citation Counts Rankings
Ranking Based On Selection :2
planet imaging
stellar astrophysics
interstellar medium
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
129,043
30,941
0.240
* Total Citation Counts Rankings
Ranking Based On Selection :3
earth science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116,093
37,363
0.322
* Total Citation Counts Rankings
Ranking Based On Selection :4
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,333
85,669
0.756
* Total Citation Counts Rankings
Ranking Based On Selection :5
Climate
Climate Change
Paleoclimate
Polarimetry
Science Policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
104,464
32,590
0.312
* Total Citation Counts Rankings
Ranking Based On Selection :6
Climate
Climate Change
Climate Extremes
Climate Impacts
Climate Prediction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99,481
40,199
0.404
* Total Citation Counts Rankings
Ranking Based On Selection :7
geochemistry
petrology
isotopic geochemistry
mantle evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,689
37,879
0.388
* Total Citation Counts Rankings
Ranking Based On Selection :8
Biogeochemistry
Ecosystem Science
Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,993
25,240
0.284
* Total Citation Counts Rankings
Ranking Based On Selection :9
Earth System science
biogeochemical cycles
extreme events
eco-hydrology
machine learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,824
50,808
0.572
* Total Citation Counts Rankings
Ranking Based On Selection :10
Remote Sensing
Climate
Biogeosciences
Geosciences
Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,035
40,377
0.459
* Total Citation Counts Rankings
Ranking Based On Selection :11
Earth and Environmental Sciences [Univ. of Adelaide]
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,555
48,832
0.571
* Total Citation Counts Rankings
Ranking Based On Selection :12
geomicrobiology
environmental microbiology
nanotechnology
biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,454
33,427
0.391
* Total Citation Counts Rankings
Ranking Based On Selection :13
Earth System Data Science
Data Management
Biodiversity
Ecosystems Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,794
53,188
0.627
* Total Citation Counts Rankings
Ranking Based On Selection :14
Observational Cosmology
Astronomical Instrumentation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,434
18,785
0.222
* Total Citation Counts Rankings
Ranking Based On Selection :15
environmental microbiology
bioluminescence
geobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,986
22,890
0.286
* Total Citation Counts Rankings
Ranking Based On Selection :16
Geochemistry
Geology
Planetary Science
Mars
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,891
30,851
0.386
* Total Citation Counts Rankings
Ranking Based On Selection :17
aerosols
air quality
geosciences
environmental geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,525
37,590
0.485
* Total Citation Counts Rankings
Ranking Based On Selection :18
Geology
geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,517
25,145
0.324
* Total Citation Counts Rankings
Ranking Based On Selection :19
Biogeochemistry of phosphorus
sulphur and trace elements in soil-plant systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,639
24,075
0.314
* Total Citation Counts Rankings
Ranking Based On Selection :20
cartography
gis & spatial analysis
geography
geodesy
surveying
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,288
24,952
0.331
* Total Citation Counts Rankings
Ranking Based On Selection :21
evolution
genomics
population genetics
ancient DNA
environmental DNA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,047
42,206
0.562
* Total Citation Counts Rankings
Ranking Based On Selection :22
ozone depletion
stratosphere
climate and climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,599
19,540
0.262
* Total Citation Counts Rankings
Ranking Based On Selection :23
carbon cycle
biogeochemistry
climate change
land use change
sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
72,100
32,838
0.455
* Total Citation Counts Rankings
Ranking Based On Selection :24
oceanography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,374
23,891
0.339
* Total Citation Counts Rankings
Ranking Based On Selection :25
Geochemistry
Geology
Early Earth
SIMS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,797
20,893
0.299
* Total Citation Counts Rankings
Rankings
1,078
15
1
Ranking Based On Selection: 1
Min Liu
East China Normal University
Shanghai, China
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
171,547
147,291
0.859
* Total Citation Counts Rankings
Rankings
1,879
850
15
Ranking Based On Selection: 2
Gillian Knapp
Princeton University
Princeton, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
129,043
30,941
0.240
planet imaging
stellar astrophysics
interstellar medium
* Total Citation Counts Rankings
Rankings
2,295
1,077
1
Ranking Based On Selection: 3
Steven Running
University of Montana, Missoula
Missoula, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116,093
37,363
0.322
* Total Citation Counts Rankings
Rankings
2,406
1,140
28
Ranking Based On Selection: 4
Fabrice Matichard
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,333
85,669
0.756
* Total Citation Counts Rankings
Rankings
2,833
1,349
25
Ranking Based On Selection: 5
James E Hansen
Columbia University New York
New York City, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
104,464
32,590
0.312
Climate
Climate Change
Paleoclimate
Polarimetry
Science Policy
* Total Citation Counts Rankings
Rankings
3,112
115
19
Ranking Based On Selection: 6
Neville Nicholls
Monash University
Clayton, Australia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99,481
40,199
0.404
Climate
Climate Change
Climate Extremes
Climate Impacts
Climate Prediction
* Total Citation Counts Rankings
Rankings
3,228
124
2
Ranking Based On Selection: 7
William L Griffin
Macquarie University
Sydney, Australia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,689
37,879
0.388
geochemistry
petrology
isotopic geochemistry
mantle evolution
* Total Citation Counts Rankings
Rankings
3,852
1,834
1
Ranking Based On Selection: 8
William H Schlesinger
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,993
25,240
0.284
Biogeochemistry
Ecosystem Science
Ecology
* Total Citation Counts Rankings
Rankings
3,865
130
1
Ranking Based On Selection: 9
Markus Reichstein
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,824
50,808
0.572
Earth System science
biogeochemical cycles
extreme events
eco-hydrology
machine learning
* Total Citation Counts Rankings
Rankings
3,928
1,867
9
Ranking Based On Selection: 10
Ranga Myneni
Boston University
Boston, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,035
40,377
0.459
Remote Sensing
Climate
Biogeosciences
Geosciences
Ecology
* Total Citation Counts Rankings
Rankings
4,116
86
1
Ranking Based On Selection: 11
M Santosh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,555
48,832
0.571
Earth and Environmental Sciences [Univ. of Adelaide]
* Total Citation Counts Rankings
Rankings
4,124
335
15
Ranking Based On Selection: 12
Jonathan Richard Lloyd
University of Manchester
Manchester, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,454
33,427
0.391
geomicrobiology
environmental microbiology
nanotechnology
biotechnology
* Total Citation Counts Rankings
Rankings
4,166
144
2
Ranking Based On Selection: 13
Frank Oliver Glöckner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,794
53,188
0.627
Earth System Data Science
Data Management
Biodiversity
Ecosystems Biology
* Total Citation Counts Rankings
Rankings
4,194
1,990
30
Ranking Based On Selection: 14
Michele Limon
University of Pennsylvania
Philadelphia, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,434
18,785
0.222
Observational Cosmology
Astronomical Instrumentation
* Total Citation Counts Rankings
Rankings
4,604
2,193
18
Ranking Based On Selection: 15
Kenneth H Nealson
University of Southern California
Los Angeles, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,986
22,890
0.286
environmental microbiology
bioluminescence
geobiology
* Total Citation Counts Rankings
Rankings
4,615
2,198
4
Ranking Based On Selection: 16
Scott M Mclennan
Stony Brook University
Stony Brook, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,891
30,851
0.386
Geochemistry
Geology
Planetary Science
Mars
* Total Citation Counts Rankings
Rankings
4,889
98
1
Ranking Based On Selection: 17
Xavier Querol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,525
37,590
0.485
aerosols
air quality
geosciences
environmental geochemistry
* Total Citation Counts Rankings
Rankings
4,891
402
8
Ranking Based On Selection: 18
Julian A. Pearce
Cardiff University
Cardiff, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,517
25,145
0.324
* Total Citation Counts Rankings
Rankings
4,987
413
1
Ranking Based On Selection: 19
Steve Mcgrath
Rothamsted Research
Harpenden, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,639
24,075
0.314
Biogeochemistry of phosphorus
sulphur and trace elements in soil-plant systems
* Total Citation Counts Rankings
Rankings
5,142
32
1
Ranking Based On Selection: 20
Georgios Achilleos
Technical University of Crete
Chania, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,288
24,952
0.331
cartography
gis & spatial analysis
geography
geodesy
surveying
* Total Citation Counts Rankings
Rankings
5,177
27
13
Ranking Based On Selection: 21
Eske Willerslev
University of Copenhagen
Copenhagen, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,047
42,206
0.562
evolution
genomics
population genetics
ancient DNA
environmental DNA
* Total Citation Counts Rankings
Rankings
5,229
2,478
73
Ranking Based On Selection: 22
Susan Solomon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,599
19,540
0.262
ozone depletion
stratosphere
climate and climate change
* Total Citation Counts Rankings
Rankings
5,512
2,611
20
Ranking Based On Selection: 23
James Randerson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
72,100
32,838
0.455
carbon cycle
biogeochemistry
climate change
land use change
sustainability
* Total Citation Counts Rankings
Rankings
5,711
2,707
39
Ranking Based On Selection: 24
Jorge L Sarmiento
Princeton University
Princeton, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,374
23,891
0.339
* Total Citation Counts Rankings
Rankings
5,793
2,741
58
Ranking Based On Selection: 25
T Mark Harrison
University of California Los Angeles
Los Angeles, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,797
20,893
0.299
Geochemistry
Geology
Early Earth
SIMS