University, Subject, Country, Region, World
Japan Agency for Marine-Earth Science & Technology 233 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
Climate Dynamics
Physical Oceanography
Dynamic Meteorology
Geophysical Fluid Dynamics
Metrics
H-Index
i10 Index
Citation Counts
102
252
44,924
* Total H IndexRankings
Ranking Based On Selection: 2
Geobiology
Microbiology
Astrobiology
Origin of Life
Environmental Microbiology
Metrics
H-Index
i10 Index
Citation Counts
91
301
28,019
* Total H IndexRankings
Ranking Based On Selection: 3
geomicrobiology
biogeochemistry
microbial ecology
geobiotechnology
sustainability science
Metrics
H-Index
i10 Index
Citation Counts
67
164
15,193
* Total H IndexRankings
Ranking Based On Selection: 4
Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
62
202
13,279
* Total H IndexRankings
Ranking Based On Selection: 5
Marine Geophysics
Seismic Imaging
Seismology
Metrics
H-Index
i10 Index
Citation Counts
61
194
12,381
* Total H IndexRankings
Ranking Based On Selection: 6
Ocean and Climate Dynamics
Metrics
H-Index
i10 Index
Citation Counts
60
155
17,958
* Total H IndexRankings
Ranking Based On Selection: 7
Greenhouse gases
atmospheric processes
climate variations
Metrics
H-Index
i10 Index
Citation Counts
59
160
19,127
* Total H IndexRankings
Ranking Based On Selection: 8
Geology
Paleoceanography
Deep-sea Drilling
Anthropocene
Metrics
H-Index
i10 Index
Citation Counts
57
137
11,135
* Total H IndexRankings
Ranking Based On Selection: 9
Metrics
H-Index
i10 Index
Citation Counts
56
210
10,987
* Total H IndexRankings
Ranking Based On Selection: 10
Environmental Microbiology
Metrics
H-Index
i10 Index
Citation Counts
53
127
11,163
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total H IndexRankings
Ranking Based On Selection: 11
Environmental Microbiology
Applied Microbiology
Metrics
H-Index
i10 Index
Citation Counts
53
96
8,955
* Total H IndexRankings
Ranking Based On Selection: 12
Meteorology
Numerical modeling of Earth system
Metrics
H-Index
i10 Index
Citation Counts
52
123
12,697
* Total H IndexRankings
Ranking Based On Selection: 13
Atmospheric Chemistry
Optical measurements
reactive gases
radicals
aerosols
Metrics
H-Index
i10 Index
Citation Counts
52
137
8,139
* Total H IndexRankings
Ranking Based On Selection: 14
Geoscience
Planetary Science
Metrics
H-Index
i10 Index
Citation Counts
45
90
6,723
* Total H IndexRankings
Ranking Based On Selection: 15
geochemistry
geology
geophysics
Metrics
H-Index
i10 Index
Citation Counts
45
120
7,551
* Total H IndexRankings
Ranking Based On Selection: 16
Structural geology
Rock mechanics
Metrics
H-Index
i10 Index
Citation Counts
45
96
7,684
* Total H IndexRankings
Ranking Based On Selection: 17
laser
physics
techlogy
Metrics
H-Index
i10 Index
Citation Counts
43
114
6,468
* Total H IndexRankings
Ranking Based On Selection: 18
Organic Molecule
Organic Geochemistry
Amino Acids & Chirality
Earth & Planetary Science
Metrics
H-Index
i10 Index
Citation Counts
43
120
7,414
* Total H IndexRankings
Ranking Based On Selection: 19
genomics
Metrics
H-Index
i10 Index
Citation Counts
43
100
7,278
* Total H IndexRankings
Ranking Based On Selection: 20
geophysics
seismology
Metrics
H-Index
i10 Index
Citation Counts
43
97
7,163
* Total H IndexRankings
Ranking Based On Selection: 21
Microbial Taxonomy
Metrics
H-Index
i10 Index
Citation Counts
42
87
5,893
* Total H IndexRankings
Ranking Based On Selection: 22
Marine Biology
Metrics
H-Index
i10 Index
Citation Counts
42
100
8,633
* Total H IndexRankings
Ranking Based On Selection: 23
Remote Sensing
Radiative Transfer
Metrics
H-Index
i10 Index
Citation Counts
41
74
7,198
* Total H IndexRankings
Ranking Based On Selection: 24
microbiology
Metrics
H-Index
i10 Index
Citation Counts
41
88
6,509
* Total H IndexRankings
Ranking Based On Selection: 25
Geophysics
Metrics
H-Index
i10 Index
Citation Counts
41
113
5,733
Toshio Yamagata; 山形俊男
Metrics
H-Index
i10-Index
Citation Counts
102
252
44,924
Climate Dynamics
Physical Oceanography
Dynamic Meteorology
Geophysical Fluid Dynamics
Ken Takai
Metrics
H-Index
i10-Index
Citation Counts
91
301
28,019
Geobiology
Microbiology
Astrobiology
Origin of Life
Environmental Microbiology
Fumio Inagaki
Metrics
H-Index
i10-Index
Citation Counts
67
164
15,193
geomicrobiology
biogeochemistry
microbial ecology
geobiotechnology
sustainability science
Naohiko Ohkouchi
Metrics
H-Index
i10-Index
Citation Counts
62
202
13,279
Shuichi Kodaira
Metrics
H-Index
i10-Index
Citation Counts
61
194
12,381
Marine Geophysics
Seismic Imaging
Seismology
Prabir K Patra
Metrics
H-Index
i10-Index
Citation Counts
59
160
19,127
Taira, Asahiko
Metrics
H-Index
i10-Index
Citation Counts
57
137
11,135
Geology
Paleoceanography
Deep-sea Drilling
Anthropocene
Katsuhiko Suzuki
Metrics
H-Index
i10-Index
Citation Counts
56
210
10,987
Takuro Nunoura
Metrics
H-Index
i10-Index
Citation Counts
53
127
11,163
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Hiroyuki Imachi
Metrics
H-Index
i10-Index
Citation Counts
53
96
8,955
Shingo Watanabe
Metrics
H-Index
i10-Index
Citation Counts
52
123
12,697
Meteorology
Numerical modeling of Earth system
Yugo Kanaya
Metrics
H-Index
i10-Index
Citation Counts
52
137
8,139
Atmospheric Chemistry
Optical measurements
reactive gases
radicals
aerosols
Takayuki Ushikubo
Metrics
H-Index
i10-Index
Citation Counts
45
90
6,723
Geoscience
Planetary Science
Kentaro Nakamura
Metrics
H-Index
i10-Index
Citation Counts
45
120
7,551
geochemistry
geology
geophysics
Takehiro Hirose
Metrics
H-Index
i10-Index
Citation Counts
45
96
7,684
Structural geology
Rock mechanics
Yosuke Kawahito
Metrics
H-Index
i10-Index
Citation Counts
43
114
6,468
Yoshinori Takano
Metrics
H-Index
i10-Index
Citation Counts
43
120
7,414
Organic Molecule
Organic Geochemistry
Amino Acids & Chirality
Earth & Planetary Science
Yoshihiro Takaki
Metrics
H-Index
i10-Index
Citation Counts
43
100
7,278
Kiyoshi Suyehiro
Metrics
H-Index
i10-Index
Citation Counts
43
97
7,163
Yuichi Nogi
Metrics
H-Index
i10-Index
Citation Counts
42
87
5,893
Yoshihisa Shirayama 白山 義久
Metrics
H-Index
i10-Index
Citation Counts
42
100
8,633
Hideki Kobayashi
Metrics
H-Index
i10-Index
Citation Counts
41
74
7,198
Remote Sensing
Radiative Transfer
Yuki Morono
Metrics
H-Index
i10-Index
Citation Counts
41
88
6,509
Masataka Kinoshita
Metrics
H-Index
i10-Index
Citation Counts
41
113
5,733