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 05, 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 (0) 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
climate | climate change | Earth system modelling | aerosols | aerosol-radiation interaction
H-Index Metrics
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H-Index124
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i10 Index391
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Citation Counts73,009
Rankings
Regional climate | Climate Change | Extreme Events | Energy | Air pollutio
H-Index Metrics
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H-Index105
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i10 Index280
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Citation Counts68,081
Rankings
oceanography | biogeochemistry | climate change | ocean solution
H-Index Metrics
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H-Index103
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i10 Index263
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Citation Counts48,897
Rankings
Rankings
Rankings
Environmental Engineering | water treatments | air treatments | adsorption | VO
H-Index Metrics
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H-Index71
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i10 Index244
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Citation Counts19,475
Rankings
Rankings
Land surface modeling | Hydrology | Climate change impacts | Remote sensin
H-Index Metrics
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H-Index59
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i10 Index103
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Citation Counts13,333
Rankings
Rankings
grassland | livestock | agroecology | ecosystem services | climate chang
H-Index Metrics
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H-Index54
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i10 Index185
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Citation Counts11,356
Rankings
Rankings
Rankings
biotechnology | microbiology | wastewater treatment | environmental engineering | pollution prevention and resource recover
H-Index Metrics
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H-Index52
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i10 Index110
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Citation Counts9,595
Rankings
Environmental virology - Phages - Enteric viruses - Inactivation - Behavior - Adhesion/agregation - surface propertie
H-Index Metrics
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H-Index49
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i10 Index92
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Citation Counts7,265
Rankings
hydrology | remote sensing | water resources | climate change | sno
H-Index Metrics
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H-Index46
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i10 Index113
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Citation Counts8,470
Rankings
Climate change | Soil biogeochemistry | Ecology | Carbon cycle | Grassland managemen
H-Index Metrics
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H-Index45
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i10 Index97
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Citation Counts8,572
Rankings
biotechnologie | génie des procédés | technologies membranaires | agroalimentair
H-Index Metrics
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H-Index45
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i10 Index121
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Citation Counts6,687
Rankings
Climate Change | Climate Services | Extreme Events | Renewable Energy | Afric
H-Index Metrics
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H-Index43
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i10 Index106
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Citation Counts12,294
Rankings
climate change | peatlands | microbial food web | plant-soil interactions | functional trait
H-Index Metrics
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H-Index43
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i10 Index80
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Citation Counts4,826
Rankings
Rankings
Rankings
Conservation | Biogeography | Conservation Biology | Ecology | Climate Chang
H-Index Metrics
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H-Index43
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i10 Index69
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Citation Counts9,705
Rankings
Statistical mechanics | climate sciences | extreme events | rare events | energy transitio
H-Index Metrics
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H-Index41
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i10 Index87
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Citation Counts5,610
Rankings
Rankings
Air quality | tropospheric ozone | aerosols | remote sensin
H-Index Metrics
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H-Index39
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i10 Index70
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Citation Counts5,007
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