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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 02, 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
78,921
World Rank
32
Country Rank
4
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
Environmental pollution | Toxicology | Climate Chang
Environmental pollution | Toxicology | Climate Chang
H-Index Metrics
-
H-Index53
-
i10 Index152
-
Citation Counts11,642
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* Total H Index Rankings
Rankings
89,198
World Rank
38
Country Rank
7
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Global Health | population | climate change | urbanizatio
Global Health | population | climate change | urbanizatio
H-Index Metrics
-
H-Index51
-
i10 Index108
-
Citation Counts7,887
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* Total H Index Rankings
Rankings
101,988
World Rank
46
Country Rank
2
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
131,801
World Rank
77
Country Rank
3
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
Climate Change | Hydroclimatic Extremes | Water Resources | Geoinformatics | Artificial Intelligenc
Climate Change | Hydroclimatic Extremes | Water Resources | Geoinformatics | Artificial Intelligenc
H-Index Metrics
-
H-Index43
-
i10 Index103
-
Citation Counts30,785
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* Total H Index Rankings
Rankings
182,778
World Rank
139
Country Rank
7
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Emerging pollution and health risk | HydroBioGeoChemistry | Waste Management | EIA/SE
Emerging pollution and health risk | HydroBioGeoChemistry | Waste Management | EIA/SE
H-Index Metrics
-
H-Index37
-
i10 Index83
-
Citation Counts4,999
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* Total H Index Rankings
Rankings
230,546
World Rank
200
Country Rank
11
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
Wastewater Treatment | Waste to energ
Wastewater Treatment | Waste to energ
H-Index Metrics
-
H-Index33
-
i10 Index88
-
Citation Counts4,071
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* Total H Index Rankings
Rankings
248,752
World Rank
235
Country Rank
20
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Climate change adaptation | Community forestry | Natural resource management | Public policy discours
Climate change adaptation | Community forestry | Natural resource management | Public policy discours
H-Index Metrics
-
H-Index32
-
i10 Index73
-
Citation Counts4,566
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* Total H Index Rankings
Rankings
258,731
World Rank
253
Country Rank
22
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
maternal and child nutrition | food systems | climate change and health | health systems | ICT for healt
maternal and child nutrition | food systems | climate change and health | health systems | ICT for healt
H-Index Metrics
-
H-Index31
-
i10 Index49
-
Citation Counts2,911
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* Total H Index Rankings
Rankings
278,133
World Rank
298
Country Rank
16
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
Environmental Remediation | Waste Conversion | Ecotoxicology | Wastewater Treatment | Food Safet
Environmental Remediation | Waste Conversion | Ecotoxicology | Wastewater Treatment | Food Safet
H-Index Metrics
-
H-Index30
-
i10 Index55
-
Citation Counts3,721
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* Total H Index Rankings
Rankings
288,072
World Rank
316
Country Rank
1
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Environmental Remediation | Soil | Biochar | Water Quality | Metalloi
Environmental Remediation | Soil | Biochar | Water Quality | Metalloi
H-Index Metrics
-
H-Index29
-
i10 Index42
-
Citation Counts2,014
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* Total H Index Rankings
Rankings
288,162
World Rank
317
Country Rank
19
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
Climate Change | Geochemistry | GIS/Remote Sensing | Geomorphology | Biogeochemistr
Climate Change | Geochemistry | GIS/Remote Sensing | Geomorphology | Biogeochemistr
H-Index Metrics
-
H-Index29
-
i10 Index39
-
Citation Counts4,920
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* Total H Index Rankings
Rankings
291,530
World Rank
331
Country Rank
17
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
Environment | Water and Sanitation | GIS | EIA | Natural Resource Managemen
Environment | Water and Sanitation | GIS | EIA | Natural Resource Managemen
H-Index Metrics
-
H-Index29
-
i10 Index49
-
Citation Counts2,614
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* Total H Index Rankings
Rankings
309,039
World Rank
364
Country Rank
31
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
Environmental Pollution | Chemical Ecology | Climate Change | Toxicological studie
Environmental Pollution | Chemical Ecology | Climate Change | Toxicological studie
H-Index Metrics
-
H-Index28
-
i10 Index84
-
Citation Counts3,605
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* Total H Index Rankings
Rankings
324,753
World Rank
387
Country Rank
20
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
Photocatalysis | sensor | water treatment by advance oxidation proces
Photocatalysis | sensor | water treatment by advance oxidation proces
H-Index Metrics
-
H-Index27
-
i10 Index43
-
Citation Counts4,966
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* Total H Index Rankings
Rankings
326,071
World Rank
389
Country Rank
4
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
Pollution Monitoring | Toxicology | Public Health | Environmental Modeling | Health Risk Assessmen
Pollution Monitoring | Toxicology | Public Health | Environmental Modeling | Health Risk Assessmen
H-Index Metrics
-
H-Index27
-
i10 Index46
-
Citation Counts2,015
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* Total H Index Rankings
Rankings
345,279
World Rank
426
Country Rank
3
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
Environmental Pollution | Ecotoxicology | Bioremediation | Plant-Microbe Interactions | Resource Biorecover
Environmental Pollution | Ecotoxicology | Bioremediation | Plant-Microbe Interactions | Resource Biorecover
H-Index Metrics
-
H-Index26
-
i10 Index44
-
Citation Counts2,049
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* Total H Index Rankings
Rankings
346,480
World Rank
430
Country Rank
8
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Environmental pollution | Disaster Management | Public healt
Environmental pollution | Disaster Management | Public healt
H-Index Metrics
-
H-Index26
-
i10 Index51
-
Citation Counts2,443
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* Total H Index Rankings
Rankings
348,300
World Rank
436
Country Rank
26
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
Geochemistry of groundwater | water treatment | climate change impacts on water resource
Geochemistry of groundwater | water treatment | climate change impacts on water resource
H-Index Metrics
-
H-Index26
-
i10 Index52
-
Citation Counts2,430
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* Total H Index Rankings
Rankings
366,436
World Rank
476
Country Rank
3
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Natural hazards and disasters | Climate change | Land use land cover chang
Natural hazards and disasters | Climate change | Land use land cover chang
H-Index Metrics
-
H-Index25
-
i10 Index28
-
Citation Counts1,906
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* Total H Index Rankings
Rankings
371,587
World Rank
494
Country Rank
17
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
Environmental Microbiology | Biotechnology | Bioremediation | Biofilm-Rhizoengineering | Climate chang
Environmental Microbiology | Biotechnology | Bioremediation | Biofilm-Rhizoengineering | Climate chang
H-Index Metrics
-
H-Index25
-
i10 Index38
-
Citation Counts2,252
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* Total H Index Rankings
Rankings
391,306
World Rank
537
Country Rank
8
University
Ranking Based On Selection:
21
Engineering & Technology / Environmental Science & Engineering
Multi-hazard interaction | environmental risk management | geospatial science
Multi-hazard interaction | environmental risk management | geospatial science
H-Index Metrics
-
H-Index24
-
i10 Index34
-
Citation Counts2,346
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* Total H Index Rankings
Rankings
415,314
World Rank
600
Country Rank
8
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
417,736
World Rank
612
Country Rank
30
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
421,527
World Rank
627
Country Rank
49
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Coastal and Urban Water Management | Coastal Engineerin
Coastal and Urban Water Management | Coastal Engineerin
H-Index Metrics
-
H-Index23
-
i10 Index39
-
Citation Counts1,795
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* Total H Index Rankings
Rankings
422,301
World Rank
629
Country Rank
3
University
Ranking Based On Selection:
25
Engineering & Technology / Environmental Science & Engineering
Water Security | Grasroots Innovations | Planetary Health | WASH | Humanitarian Eng
Water Security | Grasroots Innovations | Planetary Health | WASH | Humanitarian Eng
H-Index Metrics
-
H-Index23
-
i10 Index33
-
Citation Counts3,786
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