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 Feb 01, 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
Environmental Science
Biodiversity
Socio-Ecological Systems
Metrics
H-Index
i10 Index
Citation Counts
65
139
17,244
* Total H IndexRankings
Ranking Based On Selection: 2
Hydrologic extremes
Climate change
Water security/scarcity
Heatwaves
Metrics
H-Index
i10 Index
Citation Counts
55
123
10,397
* Total H IndexRankings
Ranking Based On Selection: 3
Natural Hazards
Economic Evaluation
Climate Change Adaptation
Decision Support
Economic Geography
Metrics
H-Index
i10 Index
Citation Counts
21
30
4,390
* Total H IndexRankings
Ranking Based On Selection: 4
weather and climate extremes
compound events
climate change
multivariate statistics
Metrics
H-Index
i10 Index
Citation Counts
20
26
3,053
* Total H IndexRankings
Ranking Based On Selection: 5
Environmental Science
Nontarget Screening
Mutagenicity
Effect Directed Analysis
Metrics
H-Index
i10 Index
Citation Counts
16
20
987
* Total H IndexRankings
Ranking Based On Selection: 6
Aquatic microbial ecology
Environmental engineering
Biogeochemistry
Biofilms
microbial activity
Metrics
H-Index
i10 Index
Citation Counts
10
11
312
* Total H IndexRankings
Ranking Based On Selection: 7
Environmental Engineering
Advanced oxidation processes
Metrics
H-Index
i10 Index
Citation Counts
8
8
1,178
* Total H IndexRankings
Ranking Based On Selection: 8
biotechnology
environmental science
hydrocarbon degradation
Metrics
H-Index
i10 Index
Citation Counts
6
4
288
Ralf Seppelt
Metrics
H-Index
i10-Index
Citation Counts
65
139
17,244
Environmental Science
Biodiversity
Socio-Ecological Systems
Rohini Kumar
Metrics
H-Index
i10-Index
Citation Counts
55
123
10,397
Hydrologic extremes
Climate change
Water security/scarcity
Heatwaves
Volker Meyer
Metrics
H-Index
i10-Index
Citation Counts
21
30
4,390
Natural Hazards
Economic Evaluation
Climate Change Adaptation
Decision Support
Economic Geography
Emanuele Bevacqua
Metrics
H-Index
i10-Index
Citation Counts
20
26
3,053
weather and climate extremes
compound events
climate change
multivariate statistics
Melis Muz|Melis Muz Massei
Metrics
H-Index
i10-Index
Citation Counts
16
20
987
Environmental Science
Nontarget Screening
Mutagenicity
Effect Directed Analysis
Nuria Perujo
Metrics
H-Index
i10-Index
Citation Counts
10
11
312
Aquatic microbial ecology
Environmental engineering
Biogeochemistry
Biofilms
microbial activity
Lin Qian
Metrics
H-Index
i10-Index
Citation Counts
8
8
1,178
Environmental Engineering
Advanced oxidation processes
Mohammad Sufian Bin Hudari
Metrics
H-Index
i10-Index
Citation Counts
6
4
288
biotechnology
environmental science
hydrocarbon degradation