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 Jan 30, 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 (873.690) 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: 26
biological treatment systems
bioremediation
anaerobic systems
Metrics
H-Index
i10 Index
Citation Counts
27
47
3,242
* Total H IndexRankings
Ranking Based On Selection: 27
Hydrology
Statistical Downscaling
Climate
Uncertainty
Metrics
H-Index
i10 Index
Citation Counts
26
36
2,408
* Total H IndexRankings
Ranking Based On Selection: 28
Environ. Risk & Impact Assessment
Life Cycle Analysis
Sustainable Water Supply
WW Management
Decision Analysis
Metrics
H-Index
i10 Index
Citation Counts
25
44
2,095
* Total H IndexRankings
Ranking Based On Selection: 29
Climate change
hydrology
extremes
Metrics
H-Index
i10 Index
Citation Counts
25
33
4,677
* Total H IndexRankings
Ranking Based On Selection: 30
water governance
social innovation
resilience
transformation
complex systems change
Metrics
H-Index
i10 Index
Citation Counts
25
39
5,783
* Total H IndexRankings
Ranking Based On Selection: 31
Ecology
conservation science
biodiversity
Metrics
H-Index
i10 Index
Citation Counts
25
46
3,155
* Total H IndexRankings
Ranking Based On Selection: 32
Ecocriticism
animal studies
environmental literature
Metrics
H-Index
i10 Index
Citation Counts
25
36
6,511
* Total H IndexRankings
Ranking Based On Selection: 33
Climate Justice
Information Policy
Information Ethics
Indigenous Information Initatives
Metrics
H-Index
i10 Index
Citation Counts
25
44
2,427
* Total H IndexRankings
Ranking Based On Selection: 34
environmental health
environmental epidemiology
climate change and health
Metrics
H-Index
i10 Index
Citation Counts
24
33
2,747
* Total H IndexRankings
Ranking Based On Selection: 35
Air Pollution
Transcription
DNA methylation
Glucocorticoids
Asthma
Metrics
H-Index
i10 Index
Citation Counts
24
30
1,979
* Total H IndexRankings
Ranking Based On Selection: 36
Environmental sociology
sustainable consumption
food politics
Metrics
H-Index
i10 Index
Citation Counts
23
36
2,854
* Total H IndexRankings
Ranking Based On Selection: 37
climate change impacts
Water resources
hydroclimatology
extremes
machine learning
Metrics
H-Index
i10 Index
Citation Counts
23
36
1,474
* Total H IndexRankings
Ranking Based On Selection: 38
Environment
sustainability
innovation
social innovation
Metrics
H-Index
i10 Index
Citation Counts
22
36
4,282
* Total H IndexRankings
Ranking Based On Selection: 39
Wastewater treatment
Resource recovery
Microbial ecology
Metrics
H-Index
i10 Index
Citation Counts
21
26
2,360
* Total H IndexRankings
Ranking Based On Selection: 40
Solid waste processing
Pelletization
Thermochemical Conversion
Particle Characterization
Metrics
H-Index
i10 Index
Citation Counts
21
30
1,417
* Total H IndexRankings
Ranking Based On Selection: 41
climate science
geoscience education
science education
Metrics
H-Index
i10 Index
Citation Counts
21
27
1,859
* Total H IndexRankings
Ranking Based On Selection: 42
climate change impact assessment
Metrics
H-Index
i10 Index
Citation Counts
20
46
1,612
* Total H IndexRankings
Ranking Based On Selection: 43
Aquatic ecosystems
biogeochemistry
climate change
environmental science
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,134
* Total H IndexRankings
Ranking Based On Selection: 44
Water
Sustainability
Private Sector
Mining and Metals
Metrics
H-Index
i10 Index
Citation Counts
18
28
1,026
* Total H IndexRankings
Ranking Based On Selection: 45
Environmental biotechnology
Metrics
H-Index
i10 Index
Citation Counts
18
25
960
* Total H IndexRankings
Ranking Based On Selection: 46
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,425
* Total H IndexRankings
Ranking Based On Selection: 47
Air Pollution
Climate Change
Environmental Policy
Benefit-Cost Analysis
Metrics
H-Index
i10 Index
Citation Counts
17
20
1,095
* Total H IndexRankings
Ranking Based On Selection: 48
Climate change adaptation
Resilient communities
Placemaking
Community engagement
Civic
Metrics
H-Index
i10 Index
Citation Counts
17
19
1,116
* Total H IndexRankings
Ranking Based On Selection: 49
Water electrolysis
Nano materials
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,619
* Total H IndexRankings
Ranking Based On Selection: 50
Safe Drinking Water
Green Chemistry
Susainability
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
17
22
859
Deborah Roberts
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
27
47
3,242
biological treatment systems
bioremediation
anaerobic systems
Arelia T Werner
Metrics
H-Index
i10-Index
Citation Counts
26
36
2,408
Hydrology
Statistical Downscaling
Climate
Uncertainty
Gyan Chhipi Shrestha
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
25
44
2,095
Environ. Risk & Impact Assessment
Life Cycle Analysis
Sustainable Water Supply
WW Management
Decision Analysis
Qiaohong Sun
Metrics
H-Index
i10-Index
Citation Counts
25
33
4,677
Climate change
hydrology
extremes
Michele Lee Moore
Metrics
H-Index
i10-Index
Citation Counts
25
39
5,783
water governance
social innovation
resilience
transformation
complex systems change
Brian Starzomski
Metrics
H-Index
i10-Index
Citation Counts
25
46
3,155
Ecology
conservation science
biodiversity
Greg Garrard
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
25
36
6,511
Ecocriticism
animal studies
environmental literature
Lisa P Nathan
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
25
44
2,427
Climate Justice
Information Policy
Information Ethics
Indigenous Information Initatives
Kate Weinberger
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
24
33
2,747
environmental health
environmental epidemiology
climate change and health
Chris Rider
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
24
30
1,979
Air Pollution
Transcription
DNA methylation
Glucocorticoids
Asthma
Emily Huddart Kennedy
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
23
36
2,854
Environmental sociology
sustainable consumption
food politics
Rajesh R Shrestha|Rajesh Raj Shrestha
Metrics
H-Index
i10-Index
Citation Counts
23
36
1,474
climate change impacts
Water resources
hydroclimatology
extremes
machine learning
James Tansey
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
22
36
4,282
Environment
sustainability
innovation
social innovation
Ryan Ziels
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
21
26
2,360
Wastewater treatment
Resource recovery
Microbial ecology
Hamid Rezaei
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
21
30
1,417
Solid waste processing
Pelletization
Thermochemical Conversion
Particle Characterization
Sara Harris
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
21
27
1,859
climate science
geoscience education
science education
Michael Pidwirny
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
20
46
1,612
climate change impact assessment
Kyra ST Pierre
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
19
25
1,134
Aquatic ecosystems
biogeochemistry
climate change
environmental science
Nadja Kunz
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
18
28
1,026
Water
Sustainability
Private Sector
Mining and Metals
Anupama Vn
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
18
25
960
Environmental biotechnology
Karena Kara Shaw
Metrics
H-Index
i10-Index
Citation Counts
18
24
1,425
Hao Yin
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
17
20
1,095
Air Pollution
Climate Change
Environmental Policy
Benefit-Cost Analysis
Mark Groulx
University of Northern British Columbia
Prince George, Canada
Metrics
H-Index
i10-Index
Citation Counts
17
19
1,116
Climate change adaptation
Resilient communities
Placemaking
Community engagement
Civic
Liu Gaoyang
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
17
21
1,619
Water electrolysis
Nano materials
Heather Buckley
Metrics
H-Index
i10-Index
Citation Counts
17
22
859
Safe Drinking Water
Green Chemistry
Susainability
Environmental Engineering