Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
High pressure Earth and Planetary Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
122
99
0.811
* Total i10 IndexRankings
Ranking Based On Selection :2
Earth Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
* Total i10 IndexRankings
Ranking Based On Selection :3
Earth and Planetary sciences
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
22
0.710
* Total i10 IndexRankings
Ranking Based On Selection :4
Local meteorology
Biometeorology
Urban Meteorology
Agricultural meteorology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
18
0.643
* Total i10 IndexRankings
Ranking Based On Selection :5
Solar system
Asteroid
Cosmochemistry
Earth and Planetary Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
13
0.565
Takashi Yoshino
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
122
99
0.811
High pressure Earth and Planetary Science
Tsutomu Ota
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
Ryoji Tanaka
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
22
0.710
Earth and Planetary sciences
Yukitaka Ohashi (大橋唯太)
Okayama University of Science
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
18
0.643
Local meteorology
Biometeorology
Urban Meteorology
Agricultural meteorology
Tak Kunihiro
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
13
0.565
Solar system
Asteroid
Cosmochemistry
Earth and Planetary Science