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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 03, 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 (1.131.752) 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
125,121
World Rank
38
Country Rank
8
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
climate change | adaptation | groundwater | energy | agri-food system
climate change | adaptation | groundwater | energy | agri-food system
H-Index Metrics
-
H-Index44
-
i10 Index94
-
Citation Counts17,204
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* Total H Index Rankings
Rankings
158,852
World Rank
53
Country Rank
9
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Climate change | water policy | food security | poverty | energ economic
Climate change | water policy | food security | poverty | energ economic
H-Index Metrics
-
H-Index40
-
i10 Index66
-
Citation Counts11,847
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* Total H Index Rankings
Rankings
171,912
World Rank
61
Country Rank
9
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Environmental Science | Occupational safety | Public healt
Environmental Science | Occupational safety | Public healt
H-Index Metrics
-
H-Index38
-
i10 Index47
-
Citation Counts6,923
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* Total H Index Rankings
Rankings
182,448
World Rank
64
Country Rank
12
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
193,123
World Rank
71
Country Rank
12
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Hydrology | Climate change impacts | Cryosphere | Water-Food Nexus | Climate Resilient System
Hydrology | Climate change impacts | Cryosphere | Water-Food Nexus | Climate Resilient System
H-Index Metrics
-
H-Index36
-
i10 Index57
-
Citation Counts8,029
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* Total H Index Rankings
Rankings
231,687
World Rank
90
Country Rank
18
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
236,031
World Rank
93
Country Rank
1
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Water Resource | Civil Engineering | Conflict Resolution | Project Management | IWR
Water Resource | Civil Engineering | Conflict Resolution | Project Management | IWR
H-Index Metrics
-
H-Index33
-
i10 Index137
-
Citation Counts4,775
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* Total H Index Rankings
Rankings
284,603
World Rank
116
Country Rank
4
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
Environmental Engineering | Environmental Management | Ecological Engineering | Civil Engineerin
Environmental Engineering | Environmental Management | Ecological Engineering | Civil Engineerin
H-Index Metrics
-
H-Index30
-
i10 Index49
-
Citation Counts4,202
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* Total H Index Rankings
Rankings
331,067
World Rank
141
Country Rank
23
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
drought | water | climate change | polic
drought | water | climate change | polic
H-Index Metrics
-
H-Index28
-
i10 Index53
-
Citation Counts21,988
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* Total H Index Rankings
Rankings
371,579
World Rank
184
Country Rank
27
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Climate change/variability | hydrological modeling | hydrological extremes | water security | water managemen
Climate change/variability | hydrological modeling | hydrological extremes | water security | water managemen
H-Index Metrics
-
H-Index26
-
i10 Index40
-
Citation Counts2,472
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* Total H Index Rankings
Rankings
446,144
World Rank
236
Country Rank
50
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
482,120
World Rank
273
Country Rank
32
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
Hydro(geo)logy | Environmental Pollution | Climate Change | Planetary Health | Remote Sensin
Hydro(geo)logy | Environmental Pollution | Climate Change | Planetary Health | Remote Sensin
H-Index Metrics
-
H-Index21
-
i10 Index24
-
Citation Counts1,060
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* Total H Index Rankings
Rankings
553,326
World Rank
354
Country Rank
36
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
Hydrological modeling | Climate Change | Remote Sensin
Hydrological modeling | Climate Change | Remote Sensin
H-Index Metrics
-
H-Index19
-
i10 Index25
-
Citation Counts1,631
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* Total H Index Rankings
Rankings
570,013
World Rank
363
Country Rank
37
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
Spatial Hydrology | Climate Change | Water Accounting | Land and Water Management | Earth Observatio
Spatial Hydrology | Climate Change | Water Accounting | Land and Water Management | Earth Observatio
H-Index Metrics
-
H-Index18
-
i10 Index25
-
Citation Counts1,667
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* Total H Index Rankings
Rankings
625,314
World Rank
418
Country Rank
8
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
Climate smart agribusiness | farmer collectives | climate change | food system
Climate smart agribusiness | farmer collectives | climate change | food system
H-Index Metrics
-
H-Index17
-
i10 Index25
-
Citation Counts1,465
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* Total H Index Rankings
Rankings
629,736
World Rank
424
Country Rank
88
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
Water Resources Management | Remote Sensing | GI
Water Resources Management | Remote Sensing | GI
H-Index Metrics
-
H-Index17
-
i10 Index30
-
Citation Counts1,064
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* Total H Index Rankings
Rankings
655,216
World Rank
453
Country Rank
9
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Environmental Sciences | waste management | Environmental Geochemistr
Environmental Sciences | waste management | Environmental Geochemistr
H-Index Metrics
-
H-Index16
-
i10 Index23
-
Citation Counts2,002
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* Total H Index Rankings
Rankings
656,869
World Rank
458
Country Rank
12
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
Irrigation and Water Management | Crop and Environmental Modelling | Climate chang
Irrigation and Water Management | Crop and Environmental Modelling | Climate chang
H-Index Metrics
-
H-Index16
-
i10 Index21
-
Citation Counts814
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* Total H Index Rankings
Rankings
658,159
World Rank
460
Country Rank
41
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Water resources | Agriculture | Environment | Climate Chang
Water resources | Agriculture | Environment | Climate Chang
H-Index Metrics
-
H-Index16
-
i10 Index19
-
Citation Counts1,612
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* Total H Index Rankings
Rankings
675,971
World Rank
481
Country Rank
42
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
water governance | transdisciplinarity | climate change | community-based approaches to wate
water governance | transdisciplinarity | climate change | community-based approaches to wate
H-Index Metrics
-
H-Index16
-
i10 Index22
-
Citation Counts1,075
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* Total H Index Rankings
Rankings
709,275
World Rank
529
Country Rank
44
University
Ranking Based On Selection:
21
Engineering & Technology / Environmental Science & Engineering
Institutions | policy | governance | climate change adaptation | irrigatio
Institutions | policy | governance | climate change adaptation | irrigatio
H-Index Metrics
-
H-Index15
-
i10 Index22
-
Citation Counts1,022
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* Total H Index Rankings
Rankings
709,969
World Rank
531
Country Rank
104
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
754,833
World Rank
602
Country Rank
5
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
Microplastics | Emerging Contaminants | Environmental Chemistry | Pollution Remediatio
Microplastics | Emerging Contaminants | Environmental Chemistry | Pollution Remediatio
H-Index Metrics
-
H-Index14
-
i10 Index17
-
Citation Counts829
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* Total H Index Rankings
Rankings
770,437
World Rank
624
Country Rank
35
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Water Resource Management | Hydrology | Aquatic Ecolog
Water Resource Management | Hydrology | Aquatic Ecolog
H-Index Metrics
-
H-Index14
-
i10 Index19
-
Citation Counts899
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* Total H Index Rankings
Rankings
773,412
World Rank
628
Country Rank
46
University
Ranking Based On Selection:
25
Engineering & Technology / Environmental Science & Engineering
Resource recovery & reuse | Environmental sustainability assessment | Business model development | Waste reus
Resource recovery & reuse | Environmental sustainability assessment | Business model development | Waste reus
H-Index Metrics
-
H-Index14
-
i10 Index17
-
Citation Counts968
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