World Scientist and University Rankings 2025
Engineering & Technology / Environmental Science & Engineering 19.333 Scientists Subject Rankings - 2025
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 6 years. As of Jun 19, 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 (1.121.318) 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
521
World Rank
176
Country Rank
3
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
environmental engineering | membrane separations | environmental nanotechnology | desalination | wate
environmental engineering | membrane separations | environmental nanotechnology | desalination | wate
H-Index Metrics
-
H-Index213
-
i10 Index570
-
Citation Counts164,402
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
890
World Rank
61
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Global change | soils | carbon | climate change | mitigatio
Global change | soils | carbon | climate change | mitigatio
H-Index Metrics
-
H-Index184
-
i10 Index863
-
Citation Counts143,454
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,010
World Rank
76
Country Rank
1
University
Ranking Based On Selection:
3
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-Index177
-
i10 Index1,021
-
Citation Counts108,224
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,055
World Rank
78
Country Rank
1
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
Climate | Climate Change | Paleoclimat
Climate | Climate Change | Paleoclimat
H-Index Metrics
-
H-Index176
-
i10 Index650
-
Citation Counts162,460
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,063
World Rank
412
Country Rank
14
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
biogeochemistry | ecology | environmental science | climate change | ecohydrolog
biogeochemistry | ecology | environmental science | climate change | ecohydrolog
H-Index Metrics
-
H-Index175
-
i10 Index497
-
Citation Counts172,625
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,111
World Rank
436
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
Microbial fuel cells | microbial electrolysis cells | thermal batteries | desalination | water electrolyzer
Microbial fuel cells | microbial electrolysis cells | thermal batteries | desalination | water electrolyzer
H-Index Metrics
-
H-Index173
-
i10 Index550
-
Citation Counts124,450
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,203
World Rank
25
Country Rank
1
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Environmental Soil Science & Biogeochemistr
Environmental Soil Science & Biogeochemistr
H-Index Metrics
-
H-Index169
-
i10 Index757
-
Citation Counts102,012
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,222
World Rank
24
Country Rank
1
University
Ranking Based On Selection:
8
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-Index168
-
i10 Index591
-
Citation Counts197,874
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,305
World Rank
530
Country Rank
19
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
climate change | ecology | carbon cycle | leaf nitroge
climate change | ecology | carbon cycle | leaf nitroge
H-Index Metrics
-
H-Index165
-
i10 Index393
-
Citation Counts178,564
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,474
World Rank
610
Country Rank
6
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Environmental & soil chemistry | adsorption | nanoparticles | microplastics | food safet
Environmental & soil chemistry | adsorption | nanoparticles | microplastics | food safet
H-Index Metrics
-
H-Index160
-
i10 Index901
-
Citation Counts106,529
Get Full Access to
Premium Data
Is Your University Ready for the Future?
Compare your institution’s global, national, and city-level ranking with its 20 closest competitors and set strategic goals.
Gain insights from detailed performance analyses of scientists across 13 major disciplines, identify your strengths, improve weaknesses, and gain a competitive edge.. Check Your Free Sample Performance Analysis
* Total H Index Rankings
Rankings
1,723
World Rank
137
Country Rank
1
University
Ranking Based On Selection:
11
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-Index154
-
i10 Index827
-
Citation Counts94,259
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,789
World Rank
57
Country Rank
7
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
air pollution | environmental health | environmental epidemiology | built environmen
air pollution | environmental health | environmental epidemiology | built environmen
H-Index Metrics
-
H-Index152
-
i10 Index450
-
Citation Counts180,026
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,946
World Rank
160
Country Rank
2
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
2,068
World Rank
40
Country Rank
7
University
Ranking Based On Selection:
14
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-Index147
-
i10 Index471
-
Citation Counts73,197
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,127
World Rank
66
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
environmental science | pollution | risk and remediatio
environmental science | pollution | risk and remediatio
H-Index Metrics
-
H-Index146
-
i10 Index935
-
Citation Counts88,934
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,394
World Rank
1,063
Country Rank
8
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
2,402
World Rank
40
Country Rank
8
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
climate change | land-climate dynamics | climate extreme
climate change | land-climate dynamics | climate extreme
H-Index Metrics
-
H-Index142
-
i10 Index339
-
Citation Counts87,506
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,540
World Rank
77
Country Rank
3
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
Water Treatment Processes | Environmental Nanotechnology | Advanced Oxidation | Membrane Technolog
Water Treatment Processes | Environmental Nanotechnology | Advanced Oxidation | Membrane Technolog
H-Index Metrics
-
H-Index140
-
i10 Index847
-
Citation Counts76,140
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,543
World Rank
5
Country Rank
1
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Environmental Engineering | Green Chemistry | Chemical Engineering | Water Treatment | Environmenta
Environmental Engineering | Green Chemistry | Chemical Engineering | Water Treatment | Environmenta
H-Index Metrics
-
H-Index140
-
i10 Index1,050
-
Citation Counts96,781
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,850
World Rank
93
Country Rank
11
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
Climate change | Tropical marine biology | Coral reef
Climate change | Tropical marine biology | Coral reef
H-Index Metrics
-
H-Index137
-
i10 Index396
-
Citation Counts107,479
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,909
World Rank
95
Country Rank
3
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
3,010
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
22
Engineering & Technology / Environmental Science & Engineering
Water Treatment | Waste to Value-added Product
Water Treatment | Waste to Value-added Product
H-Index Metrics
-
H-Index135
-
i10 Index541
-
Citation Counts99,587
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
3,131
World Rank
1,400
Country Rank
16
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
environmental chemistry | atmospheric chemistry | environmental engineerin
environmental chemistry | atmospheric chemistry | environmental engineerin
H-Index Metrics
-
H-Index134
-
i10 Index436
-
Citation Counts85,732
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
3,197
World Rank
1,431
Country Rank
7
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Oceanography | Biogeochemistry | Marine Ecosystems | Climate | Carbon Cycl
Oceanography | Biogeochemistry | Marine Ecosystems | Climate | Carbon Cycl
H-Index Metrics
-
H-Index133
-
i10 Index384
-
Citation Counts94,945
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
3,280
World Rank
285
Country Rank
1
University
Ranking Based On Selection:
25
Discover Universities That Trust Us
Curious about institutions benefiting from the AD Scientific Index?
View Our References
360° Real-Time Institutional Analysis
🔍 Uncover Your University’s Full Potential – In Real Time!
- ✔ Instantly monitor your academic performance.
- ✔ Track trends and changes by departments.
- ✔ Benchmark your position globally, regionally, nationally, and locally.
- ✔ Identify weaknesses and areas for improvement.
- ✔ Shape your strategy with interactive dashboards and expert insights.
Unlock Your Academic Potential Today
Stand out, get recognized, and grow your academic impact.
- ✔ Fast-track profile updates in 1–3 business days
- ✔ Personalized academic certificate to prove your standing
- ✔ Be listed first in the “Find an Expert” search
- ✔ Get exclusive discounts with 1-year or 3-year plans