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 06, 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 (1.131.911) 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
evolution | genomics | population genetics | ancient DNA | environmental DN
H-Index Metrics
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H-Index153
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i10 Index331
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Citation Counts85,426
Rankings
Biogeochemistry of phosphorus | sulphur and trace elements in soil-plant system
H-Index Metrics
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H-Index151
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i10 Index425
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Citation Counts81,989
Rankings
aerosols | air quality | geosciences | environmental geochemistr
H-Index Metrics
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H-Index150
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i10 Index759
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Citation Counts87,668
Rankings
Rankings
Rankings
Earth System science | biogeochemical cycles | extreme events | eco-hydrology | machine learnin
H-Index Metrics
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H-Index139
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i10 Index361
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Citation Counts106,930
Rankings
Crustal evolution | geochronology | Precambrian tectonics | palaeomagnetis
H-Index Metrics
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H-Index128
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i10 Index422
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Citation Counts57,466
Rankings
Biogeochemistry | Organic Geochemistry | Oceanography | Stable Isotopes | Geochemistr
H-Index Metrics
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H-Index127
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i10 Index392
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Citation Counts65,562
Rankings
oxygen | evolution | oceanography | geobiology | biogeochemistr
H-Index Metrics
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H-Index122
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i10 Index268
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Citation Counts69,053
Rankings
Geoquímica ambiental | Contaminación atmosférica | Aerosoles atmosférico
H-Index Metrics
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H-Index120
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i10 Index431
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Citation Counts52,253
Rankings
Rankings
geography | geomorphology | soil erosion | soil carbon | biogeochemical cycle
H-Index Metrics
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H-Index114
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i10 Index337
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Citation Counts47,265
Rankings
Rankings
Rankings
Rankings
Rankings
Rankings
Biogeochemistry | biosphere-atmosphere exchange of trace gases | nutrient cycling
H-Index Metrics
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H-Index103
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i10 Index394
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Citation Counts40,144
Rankings
Organic Geochemistry | Biogeochemistry | Paleoclimate | Global Chang
H-Index Metrics
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H-Index102
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i10 Index285
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Citation Counts33,563
Rankings
Rankings
Geoscience | Climatology | Hydrology | Environmental Sciences | Astronom
H-Index Metrics
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H-Index103
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i10 Index305
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Citation Counts40,075
Rankings
Paleomagnetism | Earth History | Paleogeography | Plate Tectonics | Mantle Dynamic
H-Index Metrics
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H-Index101
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i10 Index248
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Citation Counts40,433
Rankings
Rankings
volcanology | geochemistry | geophysics | geology | petrolog
H-Index Metrics
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H-Index100
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i10 Index465
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Citation Counts39,018
Rankings
Soils | Terrestrial Biogeochemistry | Soil Organic Matter | Soil Management | Sustainable Agricultur
H-Index Metrics
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H-Index99
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i10 Index328
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Citation Counts39,408
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