World Scientist and University Rankings 2025
Engineering & Technology / Environmental Science & Engineering 19.766 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Mar 11, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (998.570) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
environmental engineering
membrane separations
environmental nanotechnology
desalination
water
Metrics
H-Index
i10 Index
Citation Counts
210
564
161,195
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* Total H IndexRankings
Ranking Based On Selection: 2
Global change
soils
carbon
climate change
mitigation
Metrics
H-Index
i10 Index
Citation Counts
180
844
137,676
* Total H IndexRankings
Ranking Based On Selection: 3
Climate
Climate Change
Paleoclimate
Metrics
H-Index
i10 Index
Citation Counts
174
643
159,105
* Total H IndexRankings
Ranking Based On Selection: 4
biogeochemistry
ecology
environmental science
climate change
ecohydrology
Metrics
H-Index
i10 Index
Citation Counts
172
489
166,098
* Total H IndexRankings
Ranking Based On Selection: 5
Polymer nanocomposites
Conducting Polymers
Sustainability
Environmental Engineering
Electronics
Metrics
H-Index
i10 Index
Citation Counts
173
999
103,894
* Total H IndexRankings
Ranking Based On Selection: 6
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
Metrics
H-Index
i10 Index
Citation Counts
172
548
122,934
* Total H IndexRankings
Ranking Based On Selection: 7
integrated assessment
climate change
environmental science
global change
sustainable development
Metrics
H-Index
i10 Index
Citation Counts
165
577
183,749
* Total H IndexRankings
Ranking Based On Selection: 8
Environmental Soil Science & Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
166
731
98,247
* Total H IndexRankings
Ranking Based On Selection: 9
climate change
ecology
carbon cycle
leaf nitrogen
Metrics
H-Index
i10 Index
Citation Counts
164
390
169,015
* Total H IndexRankings
Ranking Based On Selection: 10
Environmental & soil chemistry
adsorption
nanoparticles
microplastics
food safety
Metrics
H-Index
i10 Index
Citation Counts
154
882
102,568
360° Institutional Performance & Benchmarking Click Here for Live Demo
Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info
* Total H IndexRankings
Ranking Based On Selection: 11
Environmental behaviour and effects of organic contaminants
passive sampling techniques
Metrics
H-Index
i10 Index
Citation Counts
153
813
91,980
* Total H IndexRankings
Ranking Based On Selection: 12
air pollution
environmental health
environmental epidemiology
built environment
Metrics
H-Index
i10 Index
Citation Counts
151
446
172,458
* Total H IndexRankings
Ranking Based On Selection: 13
Environmental science
Metrics
H-Index
i10 Index
Citation Counts
148
736
79,774
* Total H IndexRankings
Ranking Based On Selection: 14
land use change
global environmental change
geography
land use
land cover
Metrics
H-Index
i10 Index
Citation Counts
145
461
70,447
* Total H IndexRankings
Ranking Based On Selection: 15
Environmental endocrinology
Metrics
H-Index
i10 Index
Citation Counts
142
511
73,510
* Total H IndexRankings
Ranking Based On Selection: 16
environmental science
pollution
risk and remediation
Metrics
H-Index
i10 Index
Citation Counts
143
915
86,672
* Total H IndexRankings
Ranking Based On Selection: 17
climate change
land-climate dynamics
climate extremes
Metrics
H-Index
i10 Index
Citation Counts
140
333
83,472
* Total H IndexRankings
Ranking Based On Selection: 18
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
Metrics
H-Index
i10 Index
Citation Counts
139
1,031
93,728
* Total H IndexRankings
Ranking Based On Selection: 19
Climate change
Tropical marine biology
Coral reefs
Metrics
H-Index
i10 Index
Citation Counts
136
394
105,233
* Total H IndexRankings
Ranking Based On Selection: 20
air quality
aerosol science
Metrics
H-Index
i10 Index
Citation Counts
135
507
247,667
* Total H IndexRankings
Ranking Based On Selection: 21
Water Treatment Processes
Environmental Nanotechnology
Advanced Oxidation
Membrane Technology
Metrics
H-Index
i10 Index
Citation Counts
134
810
72,017
* Total H IndexRankings
Ranking Based On Selection: 22
Water Treatment
Waste to Value-added Products
Metrics
H-Index
i10 Index
Citation Counts
134
532
97,429
* Total H IndexRankings
Ranking Based On Selection: 23
environmental chemistry
atmospheric chemistry
environmental engineering
Metrics
H-Index
i10 Index
Citation Counts
133
434
84,844
* Total H IndexRankings
Ranking Based On Selection: 24
Environmental Science & Public Health
Metrics
H-Index
i10 Index
Citation Counts
131
549
73,114
* Total H IndexRankings
Ranking Based On Selection: 25
Climate Change
agriculture
mitigation
adaptation
atmospheric chemistry
Metrics
H-Index
i10 Index
Citation Counts
130
257
112,442
Menachem Elimelech
Rice University
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
210
564
161,195
environmental engineering
membrane separations
environmental nanotechnology
desalination
water
Pete Smith
University of Aberdeen
Aberdeen, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
180
844
137,676
Global change
soils
carbon
climate change
mitigation
Philip Jones
University of East Anglia
Norwich, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
174
643
159,105
Climate
Climate Change
Paleoclimate
Robert B Jackson
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
172
489
166,098
biogeochemistry
ecology
environmental science
climate change
ecohydrology
Zhanhu Guo
Northumbria University
Newcastle upon Tyne, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
173
999
103,894
Polymer nanocomposites
Conducting Polymers
Sustainability
Environmental Engineering
Electronics
Bruce E Logan
Pennsylvania State University
University Park, United States
Metrics
H-Index
i10-Index
Citation Counts
172
548
122,934
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
Detlef P. Van Vuuren
Metrics
H-Index
i10-Index
Citation Counts
165
577
183,749
integrated assessment
climate change
environmental science
global change
sustainable development
Yong-Guan Zhu
Metrics
H-Index
i10-Index
Citation Counts
166
731
98,247
Environmental Soil Science & Biogeochemistry
Christopher B Field
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
164
390
169,015
climate change
ecology
carbon cycle
leaf nitrogen
Baoshan Xing
Metrics
H-Index
i10-Index
Citation Counts
154
882
102,568
Environmental & soil chemistry
adsorption
nanoparticles
microplastics
food safety
360° Institutional Performance & Benchmarking Click Here for Live Demo
Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info
Kevin C Jones
Lancaster University
Lancaster, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
153
813
91,980
Environmental behaviour and effects of organic contaminants
passive sampling techniques
Michael Brauer
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
151
446
172,458
air pollution
environmental health
environmental epidemiology
built environment
Kevin Jones
Lancaster University
Lancaster, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
148
736
79,774
Peter Verburg
VU University of Amsterdam
Amsterdam, Netherlands
Metrics
H-Index
i10-Index
Citation Counts
145
461
70,447
land use change
global environmental change
geography
land use
land cover
John C Wingfield
Metrics
H-Index
i10-Index
Citation Counts
142
511
73,510
Environmental endocrinology
Ravi Naidu
University of South Australia
Adelaide, Australia
Metrics
H-Index
i10-Index
Citation Counts
143
915
86,672
environmental science
pollution
risk and remediation
Sonia I Seneviratne
Metrics
H-Index
i10-Index
Citation Counts
140
333
83,472
climate change
land-climate dynamics
climate extremes
Mika Sillanpää
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
139
1,031
93,728
Environmental Engineering
Green Chemistry
Chemical Engineering
Water Treatment
Environmental
Ove Hoegh Guldberg
University of Queensland
St Lucia, Australia
Metrics
H-Index
i10-Index
Citation Counts
136
394
105,233
Climate change
Tropical marine biology
Coral reefs
Lidia Morawska
Queensland University of Technology
Brisbane, Australia
Metrics
H-Index
i10-Index
Citation Counts
135
507
247,667
air quality
aerosol science
Jun Ma 马军
Harbin Institute of Technology
Harbin, China
Metrics
H-Index
i10-Index
Citation Counts
134
810
72,017
Water Treatment Processes
Environmental Nanotechnology
Advanced Oxidation
Membrane Technology
Gordon Mckay
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Metrics
H-Index
i10-Index
Citation Counts
134
532
97,429
Water Treatment
Waste to Value-added Products
Michael R Hoffmann
Metrics
H-Index
i10-Index
Citation Counts
133
434
84,844
environmental chemistry
atmospheric chemistry
environmental engineering
Davey Jones
Bangor University
Noakhali, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
131
549
73,114
Environmental Science & Public Health
Frank Dentener
European Comission
Brussels, Belgium
Metrics
H-Index
i10-Index
Citation Counts
130
257
112,442
Climate Change
agriculture
mitigation
adaptation
atmospheric chemistry
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