University, Subject, Country, Region, World
World 4.763 Scientists Subject Rankings - 2025
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 Jan 30, 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 (873.690) 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
Atmospheric Chemistry
Metrics
H-Index
i10 Index
Citation Counts
189
559
107,550
* Total H IndexRankings
Ranking Based On Selection: 2
biosphere-atmosphere interactions
ecohydrology
micrometeorology
ecosystem ecology
Metrics
H-Index
i10 Index
Citation Counts
152
391
99,176
* Total H IndexRankings
Ranking Based On Selection: 3
Atmospheric chemistry
atmosphere-biosphere exchange
climate change
Metrics
H-Index
i10 Index
Citation Counts
150
440
88,527
* Total H IndexRankings
Ranking Based On Selection: 4
climate
climate change
climate modeling
atmospheric sciences
aerosols
Metrics
H-Index
i10 Index
Citation Counts
140
378
99,729
* Total H IndexRankings
Ranking Based On Selection: 5
hydrometeorology
Metrics
H-Index
i10 Index
Citation Counts
139
1,393
103,730
* Total H IndexRankings
Ranking Based On Selection: 6
Metrics
H-Index
i10 Index
Citation Counts
129
356
102,268
* Total H IndexRankings
Ranking Based On Selection: 7
optics
spectroscopy
visual science
Metrics
H-Index
i10 Index
Citation Counts
129
1,291
82,358
* Total H IndexRankings
Ranking Based On Selection: 8
Paleoclimatology
Climate
Geochronology
Isotope Geochemistry
Chemical Oceanography
Metrics
H-Index
i10 Index
Citation Counts
127
508
106,403
* Total H IndexRankings
Ranking Based On Selection: 9
Tropical Meteorology
Hurricanes
Tropical Cyclones
Climate
Metrics
H-Index
i10 Index
Citation Counts
126
322
75,619
* Total H IndexRankings
Ranking Based On Selection: 10
Atmospheric aerosols
Amazonia
global climate change
Metrics
H-Index
i10 Index
Citation Counts
126
453
71,355
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* Total H IndexRankings
Ranking Based On Selection: 11
Atmospheric Chemistry
Air Pollution
Biosphere Atmosphere Interactions
Volatile Organic Compounds
Metrics
H-Index
i10 Index
Citation Counts
122
398
60,416
* Total H IndexRankings
Ranking Based On Selection: 12
Atmospheric chemistry
aerosol science
Metrics
H-Index
i10 Index
Citation Counts
121
797
67,522
* Total H IndexRankings
Ranking Based On Selection: 13
Polar climate
ice sheet mass balance
Greenland
Antarctica
Metrics
H-Index
i10 Index
Citation Counts
119
406
54,272
* Total H IndexRankings
Ranking Based On Selection: 14
palaeoclimate
palaeoclimatology
land-atmosphere interactions
vegetation modelling
Metrics
H-Index
i10 Index
Citation Counts
119
282
55,631
* Total H IndexRankings
Ranking Based On Selection: 15
Space Physics
Metrics
H-Index
i10 Index
Citation Counts
119
362
46,908
* Total H IndexRankings
Ranking Based On Selection: 16
Atmospheric science
physical chemistry
geochemistry
carbon cycle
Metrics
H-Index
i10 Index
Citation Counts
117
343
45,882
* Total H IndexRankings
Ranking Based On Selection: 17
Astrophysics
stellar astrophysics
Galactic astronomy
extrasolar planets
early Universe
Metrics
H-Index
i10 Index
Citation Counts
116
330
58,274
* Total H IndexRankings
Ranking Based On Selection: 18
Biometeorology
Micrometeorology
Soil Physics
Metrics
H-Index
i10 Index
Citation Counts
114
354
71,447
* Total H IndexRankings
Ranking Based On Selection: 19
Space Plasma Physics
Solar-Terrestrial Physics
Solar Wind
Magnetic Reconnection
Collisionless Shocks
Metrics
H-Index
i10 Index
Citation Counts
113
417
45,130
* Total H IndexRankings
Ranking Based On Selection: 20
Meteorology
atmospheric sciences
geosciences
Metrics
H-Index
i10 Index
Citation Counts
111
372
46,715
* Total H IndexRankings
Ranking Based On Selection: 21
Atmospheric aerosols and clouds
Metrics
H-Index
i10 Index
Citation Counts
110
223
41,725
* Total H IndexRankings
Ranking Based On Selection: 22
atmospheric physics
atmospheric chemistry
climate change
kinetics
spectroscopy
Metrics
H-Index
i10 Index
Citation Counts
110
660
54,848
* Total H IndexRankings
Ranking Based On Selection: 23
Meteorology
Carbon Cycle
Oceanography
Atmospheric Transport
Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
110
271
65,003
* Total H IndexRankings
Ranking Based On Selection: 24
Climate
biogeochemical cycles
Metrics
H-Index
i10 Index
Citation Counts
109
396
58,368
* Total H IndexRankings
Ranking Based On Selection: 25
weather
climate science
Metrics
H-Index
i10 Index
Citation Counts
107
408
52,933
Daniel J Jacob
Harvard University
Cambridge, United States
Metrics
H-Index
i10-Index
Citation Counts
189
559
107,550
Atmospheric Chemistry
Dennis Baldocchi
Metrics
H-Index
i10-Index
Citation Counts
152
391
99,176
biosphere-atmosphere interactions
ecohydrology
micrometeorology
ecosystem ecology
Steven Wofsy
Harvard University
Cambridge, United States
Metrics
H-Index
i10-Index
Citation Counts
150
440
88,527
Atmospheric chemistry
atmosphere-biosphere exchange
climate change
Filippo Giorgi
Metrics
H-Index
i10-Index
Citation Counts
140
378
99,729
climate
climate change
climate modeling
atmospheric sciences
aerosols
Qiang Zhang （张强）
Sun Yat Sen University
Guangzhou, China
Metrics
H-Index
i10-Index
Citation Counts
139
1,393
103,730
Jean-Francois Lamarque
Metrics
H-Index
i10-Index
Citation Counts
129
356
102,268
Ying-Ling Ann Chen
Metrics
H-Index
i10-Index
Citation Counts
129
1,291
82,358
optics
spectroscopy
visual science
R Lawrence 'Larry' Edwards
University of Minnesota Twin Cities
Minneapolis, United States
Metrics
H-Index
i10-Index
Citation Counts
127
508
106,403
Paleoclimatology
Climate
Geochronology
Isotope Geochemistry
Chemical Oceanography
Kerry Emanuel
Metrics
H-Index
i10-Index
Citation Counts
126
322
75,619
Tropical Meteorology
Hurricanes
Tropical Cyclones
Climate
Paulo Artaxo
Universidade de São Paulo USP
São Paulo, Brazil
Metrics
H-Index
i10-Index
Citation Counts
126
453
71,355
Atmospheric aerosols
Amazonia
global climate change
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Allen H Goldstein
Metrics
H-Index
i10-Index
Citation Counts
122
398
60,416
Atmospheric Chemistry
Air Pollution
Biosphere Atmosphere Interactions
Volatile Organic Compounds
Philip Hopke
Clarkson University
Potsdam, United States
Metrics
H-Index
i10-Index
Citation Counts
121
797
67,522
Atmospheric chemistry
aerosol science
Michiel Van Den Broeke
Utrecht University
Utrecht, Netherlands
Metrics
H-Index
i10-Index
Citation Counts
119
406
54,272
Polar climate
ice sheet mass balance
Greenland
Antarctica
Sandy P Harrison
University of Reading
Reading, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
119
282
55,631
palaeoclimate
palaeoclimatology
land-atmosphere interactions
vegetation modelling
Richard Thorne
University of California Los Angeles
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
119
362
46,908
Paul Wennberg
Metrics
H-Index
i10-Index
Citation Counts
117
343
45,882
Atmospheric science
physical chemistry
geochemistry
carbon cycle
Martin Asplund
Australian National University
Canberra, Australia
Metrics
H-Index
i10-Index
Citation Counts
116
330
58,274
Astrophysics
stellar astrophysics
Galactic astronomy
extrasolar planets
early Universe
Ta Black
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
114
354
71,447
Biometeorology
Micrometeorology
Soil Physics
JT Gosling
Metrics
H-Index
i10-Index
Citation Counts
113
417
45,130
Space Plasma Physics
Solar-Terrestrial Physics
Solar Wind
Magnetic Reconnection
Collisionless Shocks
Andreas Stohl
Universität Wien
Vienna, Austria
Metrics
H-Index
i10-Index
Citation Counts
111
372
46,715
Meteorology
atmospheric sciences
geosciences
Hamish Gordon
Carnegie Mellon University
Pittsburgh, United States
Metrics
H-Index
i10-Index
Citation Counts
110
223
41,725
Atmospheric aerosols and clouds
John VP Burrows
Universität Bremen
Bremen, Germany
Metrics
H-Index
i10-Index
Citation Counts
110
660
54,848
atmospheric physics
atmospheric chemistry
climate change
kinetics
spectroscopy
Martin Heimann
Metrics
H-Index
i10-Index
Citation Counts
110
271
65,003
Meteorology
Carbon Cycle
Oceanography
Atmospheric Transport
Biogeochemistry
James Wc White
Metrics
H-Index
i10-Index
Citation Counts
109
396
58,368
Climate
biogeochemical cycles