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The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 5 years. As of Jan 06, 2026, 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 (1.131.911) 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 Index Rankings
Rankings
893
World Rank
60
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
Global change | soils | carbon | climate change | mitigatio
Global change | soils | carbon | climate change | mitigatio
H-Index Metrics
-
H-Index189
-
i10 Index876
-
Citation Counts153,119
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* Total H Index Rankings
Rankings
974
World Rank
74
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Polymer nanocomposites | Conducting Polymers | Sustainability | Environmental Engineering | Electronic
Polymer nanocomposites | Conducting Polymers | Sustainability | Environmental Engineering | Electronic
H-Index Metrics
-
H-Index184
-
i10 Index1,050
-
Citation Counts115,982
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* Total H Index Rankings
Rankings
1,173
World Rank
91
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Climate | Climate Change | Paleoclimat
Climate | Climate Change | Paleoclimat
H-Index Metrics
-
H-Index175
-
i10 Index592
-
Citation Counts172,499
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* Total H Index Rankings
Rankings
1,262
World Rank
24
Country Rank
1
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
integrated assessment | climate change | environmental science | global change | sustainable developmen
integrated assessment | climate change | environmental science | global change | sustainable developmen
H-Index Metrics
-
H-Index171
-
i10 Index606
-
Citation Counts207,240
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* Total H Index Rankings
Rankings
1,735
World Rank
141
Country Rank
1
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Environmental behaviour and effects of organic contaminants | passive sampling technique
Environmental behaviour and effects of organic contaminants | passive sampling technique
H-Index Metrics
-
H-Index158
-
i10 Index862
-
Citation Counts99,490
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* Total H Index Rankings
Rankings
2,039
World Rank
174
Country Rank
2
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
2,119
World Rank
39
Country Rank
8
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
climate change | land-climate dynamics | climate extreme
climate change | land-climate dynamics | climate extreme
H-Index Metrics
-
H-Index150
-
i10 Index363
-
Citation Counts115,403
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* Total H Index Rankings
Rankings
2,138
World Rank
44
Country Rank
6
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
land use change | global environmental change | geography | land use | land cove
land use change | global environmental change | geography | land use | land cove
H-Index Metrics
-
H-Index150
-
i10 Index482
-
Citation Counts77,590
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* Total H Index Rankings
Rankings
2,970
World Rank
255
Country Rank
1
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
3,531
World Rank
34
Country Rank
1
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Climate Change | agriculture | mitigation | adaptation | atmospheric chemistr
Climate Change | agriculture | mitigation | adaptation | atmospheric chemistr
H-Index Metrics
-
H-Index133
-
i10 Index264
-
Citation Counts135,988
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* Total H Index Rankings
Rankings
3,953
World Rank
17
Country Rank
1
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
climate change | energy economics | integrated assessment | technological change | sustainable developmen
climate change | energy economics | integrated assessment | technological change | sustainable developmen
H-Index Metrics
-
H-Index129
-
i10 Index304
-
Citation Counts155,637
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* Total H Index Rankings
Rankings
4,502
World Rank
41
Country Rank
5
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
Environmental sciences | Geography | Land change science | Land system scienc
Environmental sciences | Geography | Land change science | Land system scienc
H-Index Metrics
-
H-Index125
-
i10 Index286
-
Citation Counts114,643
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* Total H Index Rankings
Rankings
4,635
World Rank
86
Country Rank
1
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
climate | climate change | Earth system modelling | aerosols | aerosol-radiation interaction
climate | climate change | Earth system modelling | aerosols | aerosol-radiation interaction
H-Index Metrics
-
H-Index124
-
i10 Index390
-
Citation Counts72,429
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* Total H Index Rankings
Rankings
4,825
World Rank
116
Country Rank
13
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
energy | environmental science | engineering | renewable_energy | bioenerg
energy | environmental science | engineering | renewable_energy | bioenerg
H-Index Metrics
-
H-Index123
-
i10 Index441
-
Citation Counts68,216
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* Total H Index Rankings
Rankings
4,941
World Rank
431
Country Rank
7
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
Climate change and health | planetary health | air pollution | sustainable food systems | health co-benefits of low carbon policie
Climate change and health | planetary health | air pollution | sustainable food systems | health co-benefits of low carbon policie
H-Index Metrics
-
H-Index122
-
i10 Index312
-
Citation Counts82,188
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* Total H Index Rankings
Rankings
4,977
World Rank
78
Country Rank
6
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
5,303
World Rank
471
Country Rank
40
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
5,502
World Rank
42
Country Rank
7
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
5,703
World Rank
98
Country Rank
9
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Air pollution & health | environmental epidemiology | public health | epidemiology | air pollutio
Air pollution & health | environmental epidemiology | public health | epidemiology | air pollutio
H-Index Metrics
-
H-Index118
-
i10 Index352
-
Citation Counts54,569
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* Total H Index Rankings
Rankings
5,814
World Rank
149
Country Rank
3
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
Water-food-energy | water resources management | water footprint assessment | sustainable development | policy analysi
Water-food-energy | water resources management | water footprint assessment | sustainable development | policy analysi
H-Index Metrics
-
H-Index117
-
i10 Index313
-
Citation Counts77,796
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* Total H Index Rankings
Rankings
5,840
World Rank
23
Country Rank
2
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
5,943
World Rank
44
Country Rank
15
University
Ranking Based On Selection:
22
Engineering & Technology / Environmental Science & Engineering
Air pollution | oxidative stress | inflammation | particle toxicology | environmental epidemiolog
Air pollution | oxidative stress | inflammation | particle toxicology | environmental epidemiolog
H-Index Metrics
-
H-Index117
-
i10 Index435
-
Citation Counts45,593
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* Total H Index Rankings
Rankings
6,086
World Rank
553
Country Rank
4
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
climate change | sea level change | climate sensitivit
climate change | sea level change | climate sensitivit
H-Index Metrics
-
H-Index116
-
i10 Index250
-
Citation Counts77,395
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* Total H Index Rankings
Rankings
6,244
World Rank
109
Country Rank
1
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Macroecology | Niche Evolution | Climate Change Impac
Macroecology | Niche Evolution | Climate Change Impac
H-Index Metrics
-
H-Index115
-
i10 Index312
-
Citation Counts86,298
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Premium Data
* Total H Index Rankings
Rankings
6,580
World Rank
135
Country Rank
3
University
Ranking Based On Selection:
25
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