The Citation Rankings (Highly Cited Researchers) list 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
air pollution
environmental health
environmental epidemiology
built environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
168,916
113,085
0.669
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Satellite Remote Sensing
Air Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,492
55,018
0.629
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Conservation Biology
stable isotopes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,289
15,371
0.247
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Limnology
Paleolimnology
Limnogeology
Arctic
Diatoms
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,420
17,651
0.307
* Total Citation Counts Rankings
Ranking Based On Selection: 5
planning of energy and environmental systems
synchrotron-based environmental chemistry and biochemistry
climate modeling and d
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,929
15,146
0.310
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Climate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,349
18,709
0.387
* Total Citation Counts Rankings
Ranking Based On Selection: 7
climate
climate policy
climate solutions
oceanography
meteorology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,956
9,248
0.215
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Environmental Engineering
Environmental science
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,687
12,829
0.301
* Total Citation Counts Rankings
Ranking Based On Selection: 9
wildland fire
climate change
fire weather
landscape fire modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,226
16,518
0.411
* Total Citation Counts Rankings
Ranking Based On Selection: 10
water quality modeling
wastewater treatment
control
micropollutants
resource recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,681
9,738
0.245
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Environmental Science
Ecotoxicology
Risk Assessment.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,788
9,062
0.260
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Environmental Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,997
7,819
0.261
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Arctic
cold-regions hydrology
climate change
hydro-ecology
hydro-climatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,206
7,749
0.275
* Total Citation Counts Rankings
Ranking Based On Selection: 14
environment
work & health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,944
7,956
0.307
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Water Resources Management
Human-Water Systems
Sustainable Agriculture
Artificial Intelligence
Water Resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,124
16,828
0.698
* Total Citation Counts Rankings
Ranking Based On Selection: 16
ethnobotany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,062
8,562
0.407
* Total Citation Counts Rankings
Ranking Based On Selection: 17
environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,735
5,850
0.282
* Total Citation Counts Rankings
Ranking Based On Selection: 18
environmental toxicology
exposure science
ecotoxicology
environmental health
mercury
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,633
13,424
0.651
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Governance Coasts Oceans Fisheries SES Resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,805
9,283
0.469
* Total Citation Counts Rankings
Ranking Based On Selection: 20
biomass conversion
pentose-fermenting yeasts
pollutant degradation
pathogen detection
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,157
3,038
0.159
* Total Citation Counts Rankings
Ranking Based On Selection: 21
environmental values
perceived risk
culture & environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,022
9,522
0.528
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Climate science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,103
11,884
0.695
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Hydrogeology
Environmental Geochemistry
Groundwater
Remediation
Contaminant Transport
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,313
4,773
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 24
stigma
HIV
youth
humanitarian health
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,181
11,982
0.740
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Environmental Toxicology
Environmental Chemistry
Risk Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,953
3,777
0.237
Michael Brauer
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
168,916
113,085
0.669
air pollution
environmental health
environmental epidemiology
built environment
Aaron Van Donkelaar
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,492
55,018
0.629
Satellite Remote Sensing
Air Quality
Keith A Hobson
Environment Canada
Ottawa, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,289
15,371
0.247
Conservation Biology
stable isotopes
John Smol
Queen's University Kingston
Kingston, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,420
17,651
0.307
Limnology
Paleolimnology
Limnogeology
Arctic
Diatoms
Guohe Huang
University of Regina
Regina, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,929
15,146
0.310
planning of energy and environmental systems
synchrotron-based environmental chemistry and biochemistry
climate modeling and d
Michael Eby
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,349
18,709
0.387
Andrew Weaver
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,956
9,248
0.215
climate
climate policy
climate solutions
oceanography
meteorology
Joo Hwa Tay
University of Calgary
Calgary, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,687
12,829
0.301
Environmental Engineering
Environmental science
Biotechnology
Mike Flannigan
University of Alberta
Edmonton, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,226
16,518
0.411
wildland fire
climate change
fire weather
landscape fire modelling
Peter A Vanrolleghem
Université Laval
Québec, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,681
9,738
0.245
water quality modeling
wastewater treatment
control
micropollutants
resource recovery
Keith Solomon
University of Guelph
Guelph, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,788
9,062
0.260
Environmental Science
Ecotoxicology
Risk Assessment.
Frank Wania
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,997
7,819
0.261
Environmental Chemistry
Terry Prowse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,206
7,749
0.275
Arctic
cold-regions hydrology
climate change
hydro-ecology
hydro-climatology
Donald Cole
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,944
7,956
0.307
environment
work & health
Jan Franklin Adamowski
McGill University
Montréal, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,124
16,828
0.698
Water Resources Management
Human-Water Systems
Sustainable Agriculture
Artificial Intelligence
Water Resources
Nancy Turner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,062
8,562
0.407
Catherine N Mulligan
Concordia University Montréal
Montréal, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,735
5,850
0.282
Niladri Nil Basu
McGill University
Montréal, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,633
13,424
0.651
environmental toxicology
exposure science
ecotoxicology
environmental health
mercury
Derek Armitage
University of Waterloo
Waterloo, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,805
9,283
0.469
Governance Coasts Oceans Fisheries SES Resilience
Hung Lee
University of Guelph
Guelph, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,157
3,038
0.159
biomass conversion
pentose-fermenting yeasts
pollutant degradation
pathogen detection
Terre Satterfield
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,022
9,522
0.528
environmental values
perceived risk
culture & environment
Kirsten Zickfeld
Simon Fraser University
Burnaby, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,103
11,884
0.695
Carol Ptacek
University of Waterloo
Waterloo, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,313
4,773
0.293
Hydrogeology
Environmental Geochemistry
Groundwater
Remediation
Contaminant Transport
Carmen Logie
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,181
11,982
0.740
stigma
HIV
youth
humanitarian health
climate change
Paul Jones
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,953
3,777
0.237
Environmental Toxicology
Environmental Chemistry
Risk Assessment