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. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
57,728
Country Rank
1,474
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Hideaki Motoyama](/user/assets/images/profile/no-profile-photo.png)
Glaciology
Ice core science
Paleoclimate
Snow Hydrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
148
74
0.500
* Total i10 Index Rankings
World Rank
58,529
Country Rank
257
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/17426.png)
![New Zealand](/flags/nz.png)
![Clive Howard-Williams](/user/assets/images/profile/no-profile-photo.png)
freshwater and polar biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
37
0.252
* Total i10 Index Rankings
World Rank
89,711
Country Rank
2,214
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Akinori Takahashi](/user/assets/images/profile/no-profile-photo.png)
Seabird
biologging
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
114
90
0.789
* Total i10 Index Rankings
World Rank
130,267
Country Rank
3,186
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Yasunobu Ogawa](https://cdn.adscientificindex.com/pictures/74/4407699.jpg)
Upper atmospheric physics
ionospheric physics
ionosphere
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
45
0.500
* Total i10 Index Rankings
World Rank
131,750
Country Rank
3,215
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Kenji Horie](/user/assets/images/profile/no-profile-photo.png)
Earth Science
Isotope Geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
89
64
0.719
* Total i10 Index Rankings
World Rank
153,358
Country Rank
3,709
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Ryuho Kataoka](https://cdn.adscientificindex.com/pictures/af/4406710.jpg)
Space Physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
55
0.688
* Total i10 Index Rankings
World Rank
165,080
Country Rank
3,996
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Shuji Fujita](https://cdn.adscientificindex.com/pictures/46/4407035.jpg)
Glaciology
Ice Core
Radioglaciology
Ice Physics
Climate Change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
39
0.513
* Total i10 Index Rankings
World Rank
339,344
Country Rank
7,784
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Jean-Baptiste Thiebot](https://cdn.adscientificindex.com/pictures/66/4405256.jpg)
Marine Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
35
0.854
* Total i10 Index Rankings
World Rank
341,757
Country Rank
7,827
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Jun'İchi Okuno](/user/assets/images/profile/no-profile-photo.png)
Earth Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
28
0.683
* Total i10 Index Rankings
World Rank
342,495
Country Rank
7,841
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Naoya Imae](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
26
0.634
* Total i10 Index Rankings
World Rank
356,001
Country Rank
8,131
Institution Rank : 10
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Yutaka Tobo](/user/assets/images/profile/no-profile-photo.png)
Atmospheric aerosols
Aerosol-cloud interactions
Ice nucleation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
35
0.897
* Total i10 Index Rankings
World Rank
359,955
Country Rank
8,208
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![菅沼悠介](https://cdn.adscientificindex.com/pictures/27/4407979.jpg)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
* Total i10 Index Rankings
World Rank
360,581
Country Rank
8,225
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Yoshihiro Tomikawa](/user/assets/images/profile/no-profile-photo.png)
Atmospheric Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
24
0.615
* Total i10 Index Rankings
World Rank
389,227
Country Rank
8,797
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Yusuke Suganuma](https://cdn.adscientificindex.com/pictures/9d/4407924.jpg)
Earth Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
* Total i10 Index Rankings
World Rank
458,369
Country Rank
10,138
Institution Rank : 14
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Yukiko Tanabe](https://cdn.adscientificindex.com/pictures/e7/4407903.jpg)
Aquatic Ecology
Limnology
Microbiology
Environmental Science
Earth Life Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
24
0.800
* Total i10 Index Rankings
World Rank
629,152
Country Rank
13,158
Institution Rank : 15
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Shun Tsutaki](https://cdn.adscientificindex.com/pictures/53/5292828.jpg)
Glaciology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
17
0.850
* Total i10 Index Rankings
World Rank
632,729
Country Rank
13,229
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Masakazu Fujii](/user/assets/images/profile/no-profile-photo.png)
Earth and Planetary Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
15
0.750
* Total i10 Index Rankings
World Rank
652,116
Country Rank
13,555
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Ryosuke Makabe](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
16
0.842
* Total i10 Index Rankings
World Rank
671,225
Country Rank
13,871
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Takeshige Ishiwa](https://cdn.adscientificindex.com/pictures/48/4407323.jpg)
sea-level change
last glacial period
Antarctica
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
17
0.944
* Total i10 Index Rankings
World Rank
676,628
Country Rank
13,949
Institution Rank : 19
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Takanori Nishiyama](/user/assets/images/profile/no-profile-photo.png)
Upper Atmospheric Physics
Space Plasma Physics
Planetary Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
15
0.833
* Total i10 Index Rankings
World Rank
679,771
Country Rank
14,003
Institution Rank : 20
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Takahiro Iida](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
13
0.722
* Total i10 Index Rankings
World Rank
721,656
Country Rank
14,678
Institution Rank : 21
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Mami Takehara](https://cdn.adscientificindex.com/pictures/dc/4460477.jpg)
geology
geochemistry
petrology
analytical chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
15
0.938
* Total i10 Index Rankings
World Rank
773,255
Country Rank
15,497
Institution Rank : 22
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Naoko Nagatsuka](/user/assets/images/profile/no-profile-photo.png)
glacier
ice core
cryoconite
mineral dust
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total i10 Index Rankings
World Rank
773,425
Country Rank
15,499
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Atsushi Yoshida](https://cdn.adscientificindex.com/pictures/45/4510798.jpg)
Earth system
Aerosol
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total i10 Index Rankings
World Rank
817,624
Country Rank
16,215
Institution Rank : 24
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Ikumi Oyabu](/user/assets/images/profile/no-profile-photo.png)
paleoclimate
glaciology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
10
0.769
* Total i10 Index Rankings
World Ranking
57,728
Country Ranking
1,474
Institution Ranking
1
Hideaki Motoyama
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
148
74
0.500
![](https://cdn.adscientificindex.com/logos/15936.png)
Glaciology
Ice core science
Paleoclimate
Snow Hydrology
* Total i10 Index Rankings
World Ranking
58,529
Country Ranking
257
Institution Ranking
5
Clive Howard-Williams
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
37
0.252
* Total i10 Index Rankings
World Ranking
89,711
Country Ranking
2,214
Institution Ranking
2
Akinori Takahashi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
114
90
0.789
* Total i10 Index Rankings
World Ranking
130,267
Country Ranking
3,186
Institution Ranking
3
Yasunobu Ogawa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
45
0.500
* Total i10 Index Rankings
World Ranking
131,750
Country Ranking
3,215
Institution Ranking
4
Kenji Horie
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
89
64
0.719
![](https://cdn.adscientificindex.com/logos/15936.png)
Earth Science
Isotope Geochemistry
* Total i10 Index Rankings
World Ranking
153,358
Country Ranking
3,709
Institution Ranking
5
Ryuho Kataoka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
55
0.688
* Total i10 Index Rankings
World Ranking
165,080
Country Ranking
3,996
Institution Ranking
6
Shuji Fujita
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
39
0.513
![](https://cdn.adscientificindex.com/logos/15936.png)
Glaciology
Ice Core
Radioglaciology
Ice Physics
Climate Change
* Total i10 Index Rankings
World Ranking
339,344
Country Ranking
7,784
Institution Ranking
7
Jean-Baptiste Thiebot
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
35
0.854
* Total i10 Index Rankings
World Ranking
341,757
Country Ranking
7,827
Institution Ranking
8
Jun'İchi Okuno
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
28
0.683
* Total i10 Index Rankings
World Ranking
342,495
Country Ranking
7,841
Institution Ranking
9
Naoya Imae
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
26
0.634
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* Total i10 Index Rankings
World Ranking
356,001
Country Ranking
8,131
Institution Ranking
10
Yutaka Tobo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
35
0.897
* Total i10 Index Rankings
World Ranking
359,955
Country Ranking
8,208
Institution Ranking
11
菅沼悠介
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
* Total i10 Index Rankings
World Ranking
360,581
Country Ranking
8,225
Institution Ranking
12
Yoshihiro Tomikawa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
24
0.615
* Total i10 Index Rankings
World Ranking
389,227
Country Ranking
8,797
Institution Ranking
13
Yusuke Suganuma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
* Total i10 Index Rankings
World Ranking
458,369
Country Ranking
10,138
Institution Ranking
14
Yukiko Tanabe
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
24
0.800
![](https://cdn.adscientificindex.com/logos/15936.png)
Aquatic Ecology
Limnology
Microbiology
Environmental Science
Earth Life Science
* Total i10 Index Rankings
World Ranking
629,152
Country Ranking
13,158
Institution Ranking
15
Shun Tsutaki
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
17
0.850
* Total i10 Index Rankings
World Ranking
632,729
Country Ranking
13,229
Institution Ranking
16
Masakazu Fujii
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
15
0.750
* Total i10 Index Rankings
World Ranking
652,116
Country Ranking
13,555
Institution Ranking
17
Ryosuke Makabe
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
16
0.842
* Total i10 Index Rankings
World Ranking
671,225
Country Ranking
13,871
Institution Ranking
18
Takeshige Ishiwa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
17
0.944
* Total i10 Index Rankings
World Ranking
676,628
Country Ranking
13,949
Institution Ranking
19
Takanori Nishiyama
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
15
0.833
![](https://cdn.adscientificindex.com/logos/15936.png)
Upper Atmospheric Physics
Space Plasma Physics
Planetary Science
* Total i10 Index Rankings
World Ranking
679,771
Country Ranking
14,003
Institution Ranking
20
Takahiro Iida
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
13
0.722
* Total i10 Index Rankings
World Ranking
721,656
Country Ranking
14,678
Institution Ranking
21
Mami Takehara
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
15
0.938
![](https://cdn.adscientificindex.com/logos/15936.png)
geology
geochemistry
petrology
analytical chemistry
* Total i10 Index Rankings
World Ranking
773,255
Country Ranking
15,497
Institution Ranking
22
Naoko Nagatsuka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total i10 Index Rankings
World Ranking
773,425
Country Ranking
15,499
Institution Ranking
23
Atsushi Yoshida
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total i10 Index Rankings
World Ranking
817,624
Country Ranking
16,215
Institution Ranking
24
Ikumi Oyabu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
10
0.769