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 31, 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 (870.053) 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
Metrics
H-Index
i10 Index
Citation Counts
112
525
45,580
* Total H IndexRankings
Ranking Based On Selection: 2
Emerging Contaminants
Metrics
H-Index
i10 Index
Citation Counts
110
431
41,676
* Total H IndexRankings
Ranking Based On Selection: 3
Climate Change Economics
Ecological Economics
Emission Data Accounting
Metrics
H-Index
i10 Index
Citation Counts
109
276
42,845
* Total H IndexRankings
Ranking Based On Selection: 4
Disinfection and DBPs
DBP precursors and characterization
nitrosamines
NOM
T&O
Metrics
H-Index
i10 Index
Citation Counts
108
769
48,679
* Total H IndexRankings
Ranking Based On Selection: 5
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
106
418
41,338
* Total H IndexRankings
Ranking Based On Selection: 6
emission
atmospheric chemistry
health impacts
mercury
Metrics
H-Index
i10 Index
Citation Counts
103
373
36,543
* Total H IndexRankings
Ranking Based On Selection: 7
POPs
Emerging Contaminants
PFAS
PPCPs
Metrics
H-Index
i10 Index
Citation Counts
99
333
32,782
* Total H IndexRankings
Ranking Based On Selection: 8
Land surface modeling and data assimilation
Regional climate modeling
Tibetan Plateau climate change
Metrics
H-Index
i10 Index
Citation Counts
87
262
25,541
* Total H IndexRankings
Ranking Based On Selection: 9
Indoor environment
Indoor air quality
Exposure
Building energy efficiency
Thermal energy storage
Metrics
H-Index
i10 Index
Citation Counts
84
297
24,441
* Total H IndexRankings
Ranking Based On Selection: 10
Wastewater treatment and reuse
Disinfection
Advanced oxidation
Desalination
Microalgae biomass
Metrics
H-Index
i10 Index
Citation Counts
81
409
25,575
* Total H IndexRankings
Ranking Based On Selection: 11
advanced oxidation
ozonation
electrochemical oxidation
electrolysis
water and wastewater treatment
Metrics
H-Index
i10 Index
Citation Counts
73
162
14,052
* Total H IndexRankings
Ranking Based On Selection: 12
Environment catalysis
Metrics
H-Index
i10 Index
Citation Counts
71
183
14,914
* Total H IndexRankings
Ranking Based On Selection: 13
wastewater treatment
microbial fuel cell
capacitive deionization
Bioelectrochemical systems
Metrics
H-Index
i10 Index
Citation Counts
69
202
15,870
* Total H IndexRankings
Ranking Based On Selection: 14
Aerosol Science & Technology
Air pollution & Control
Environmental Chemistry
Metrics
H-Index
i10 Index
Citation Counts
68
189
19,944
* Total H IndexRankings
Ranking Based On Selection: 15
Environmental Science and Engineering
Metrics
H-Index
i10 Index
Citation Counts
56
103
13,698
* Total H IndexRankings
Ranking Based On Selection: 16
Satellite remote sensing
Air quality
Chemical transport models
Metrics
H-Index
i10 Index
Citation Counts
53
89
14,035
* Total H IndexRankings
Ranking Based On Selection: 17
Wastewater Energy & Resource Recovery
Advanced Wastewater Treatment
Microbial Electrochemical Technology
Catalytic Oxidation
Metrics
H-Index
i10 Index
Citation Counts
50
94
8,208
* Total H IndexRankings
Ranking Based On Selection: 18
CO2 Capture
Thermo-chemical Conversion of Biomass
Metrics
H-Index
i10 Index
Citation Counts
49
101
9,788
* Total H IndexRankings
Ranking Based On Selection: 19
Emission Inventory
Climate Change
Energy
Co-benefits
Metrics
H-Index
i10 Index
Citation Counts
47
69
14,560
* Total H IndexRankings
Ranking Based On Selection: 20
industrial ecology
industrial ecosystem
complex network
Metrics
H-Index
i10 Index
Citation Counts
43
120
6,752
* Total H IndexRankings
Ranking Based On Selection: 21
water supply
water distribution systems
leakage control
early warning systems
Metrics
H-Index
i10 Index
Citation Counts
42
112
5,702
* Total H IndexRankings
Ranking Based On Selection: 22
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
38
73
4,669
* Total H IndexRankings
Ranking Based On Selection: 23
Climate Change
Energy Policy
Metrics
H-Index
i10 Index
Citation Counts
38
71
4,571
* Total H IndexRankings
Ranking Based On Selection: 24
Emission
Air pollution and Control
Mercury
Metrics
H-Index
i10 Index
Citation Counts
36
67
4,526
* Total H IndexRankings
Ranking Based On Selection: 25
Industrial Ecology
Eco-industrial Park
Industrial Symbiosis
Life Cycle Assessment
Metrics
H-Index
i10 Index
Citation Counts
36
75
3,586
Emerging Contaminants
Dabo Guan 关大博
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
109
276
42,845
Climate Change Economics
Ecological Economics
Emission Data Accounting
Chao Chen
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
108
769
48,679
Disinfection and DBPs
DBP precursors and characterization
nitrosamines
NOM
T&O
Junhua Li
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
106
418
41,338
Environmental Engineering
wang shuxiao
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
103
373
36,543
emission
atmospheric chemistry
health impacts
mercury
Jun Huang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
99
333
32,782
POPs
Emerging Contaminants
PFAS
PPCPs
Land surface modeling and data assimilation
Regional climate modeling
Tibetan Plateau climate change
Yinping Zhang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
84
297
24,441
Indoor environment
Indoor air quality
Exposure
Building energy efficiency
Thermal energy storage
HongYing HU
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
81
409
25,575
Wastewater treatment and reuse
Disinfection
Advanced oxidation
Desalination
Microalgae biomass
Yujue Wang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
73
162
14,052
advanced oxidation
ozonation
electrochemical oxidation
electrolysis
water and wastewater treatment
Environment catalysis
Peng Liang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
69
202
15,870
wastewater treatment
microbial fuel cell
capacitive deionization
Bioelectrochemical systems
Jingkun Jiang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
68
189
19,944
Aerosol Science & Technology
Air pollution & Control
Environmental Chemistry
Environmental Science and Engineering
Guannan Geng
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
53
89
14,035
Satellite remote sensing
Air quality
Chemical transport models
Xiaoyuan Zhang
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
50
94
8,208
Wastewater Energy & Resource Recovery
Advanced Wastewater Treatment
Microbial Electrochemical Technology
Catalytic Oxidation
CO2 Capture
Thermo-chemical Conversion of Biomass
Emission Inventory
Climate Change
Energy
Co-benefits
industrial ecology
industrial ecosystem
complex network
Shuming Liu
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
42
112
5,702
water supply
water distribution systems
leakage control
early warning systems
Environmental Engineering
Climate Change
Energy Policy
Emission
Air pollution and Control
Mercury
Jinping Tian
Tsinghua University
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
36
75
3,586
Industrial Ecology
Eco-industrial Park
Industrial Symbiosis
Life Cycle Assessment