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 (1.121.299) 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].
Rankings



resilience | regime shifts | social-ecological systems | scenario planning | biodiversity financ
H-Index Metrics
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H-Index81
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i10 Index150
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Citation Counts46,140
Rankings



Hydroclimate | Water Systems | Water Environment | Diffuse Pollution | Environmental Chang
H-Index Metrics
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H-Index69
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i10 Index218
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Citation Counts17,205
Rankings



organohalogen compounds | flame retardants | environmental chemistry | Arctic | human exposur
H-Index Metrics
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H-Index66
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i10 Index126
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Citation Counts62,108
Rankings



Environmental Science | Environmental Chemistry | Analytical Chemistry | POPs | Plastic Pollutio
H-Index Metrics
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H-Index65
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i10 Index148
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Citation Counts21,082
Rankings



Air Pollution | Climate change | Science Policy interactio
H-Index Metrics
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H-Index63
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i10 Index131
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Citation Counts17,255
Rankings



Rankings



Aerosol chemistry | mass spectrometry | climate | air qualit
H-Index Metrics
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H-Index53
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i10 Index94
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Citation Counts11,943
Rankings



Transformations | Food systems governance | complex social-ecological systems | futures | climate change adaptatio
H-Index Metrics
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H-Index48
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i10 Index99
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Citation Counts8,539
Rankings



Carbon Cycle | Nitrogen Cycle | Stable Isotopes | Arctic Ecosystems | Permafros
H-Index Metrics
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H-Index40
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i10 Index52
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Citation Counts7,310
Rankings



environmental science | analytical chemistry | chemical engineering | algorith
H-Index Metrics
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H-Index32
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i10 Index41
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Citation Counts2,805
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Rankings



POPs | sediments | Baltic Sea | Mixture toxicity | Chemicals' risk assessmen
H-Index Metrics
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H-Index32
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i10 Index54
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Citation Counts3,641
Rankings



Risk assessment | Chemical regulation | Risk management | Science-policy interaction
H-Index Metrics
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H-Index28
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i10 Index43
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Citation Counts3,429
Rankings



Atmospheric chemistry and Air pollutio
H-Index Metrics
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H-Index22
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i10 Index31
-
Citation Counts1,508
Rankings



Water Resources Modeling | Analysis and Managemen
H-Index Metrics
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H-Index21
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i10 Index30
-
Citation Counts2,063
Rankings



Water Resources | Hydrology and Hydrogeolog
H-Index Metrics
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H-Index19
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i10 Index23
-
Citation Counts1,772
Rankings



Environmental Science | Aquatic Science
H-Index Metrics
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H-Index16
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i10 Index18
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Citation Counts1,105
Rankings



Rankings



metabolomics | nontarget analysis | suspect screening | environmental pollution | exposomic
H-Index Metrics
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H-Index10
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i10 Index10
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Citation Counts577
Rankings



Marine Biology | Marine Ecology | Polar Ecosystem
H-Index Metrics
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H-Index9
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i10 Index8
-
Citation Counts243
Rankings



Rankings



Earth and Space Sciences | Environmental Sciences | Climate Change | Water Resources | Water Securit
H-Index Metrics
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H-Index7
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i10 Index6
-
Citation Counts119
Rankings



Environmental Science | environmental risk assessment | environmental fate modelling | emerging contaminants | nanomaterial
H-Index Metrics
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H-Index6
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i10 Index5
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Citation Counts297
Rankings



Rankings



Rankings



human exposure | human health | mixture risk assessment | contaminant analysis | blood analysi
H-Index Metrics
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H-Index4
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i10 Index2
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Citation Counts66