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
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
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
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
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
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
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 Rank
1,208,305
Country Rank
22,632
Institution Rank : 27
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Shu-Kuan Wong](/user/assets/images/profile/no-profile-photo.png)
Environmental microbiology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
* Total i10 Index Rankings
World Rank
1,731,314
Country Rank
30,494
Institution Rank : 29
![](https://cdn.adscientificindex.com/logos/15936.png)
![Japan](/flags/jp.png)
![Sachin Alexander Reddy](/pictures/d6/5591271.jpg)
Space Plasma Physics
Ionospheres
Machine Learning
Space Weather
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
89,711
![Japan](/flags/jp.png)
2,214
![](https://cdn.adscientificindex.com/logos/15936.png)
2
Akinori Takahashi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
114
90
0.789
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
130,267
![Japan](/flags/jp.png)
3,186
![](https://cdn.adscientificindex.com/logos/15936.png)
3
Yasunobu Ogawa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
45
0.500
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
342,495
![Japan](/flags/jp.png)
7,841
![](https://cdn.adscientificindex.com/logos/15936.png)
9
Naoya Imae
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
26
0.634
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
356,001
![Japan](/flags/jp.png)
8,131
![](https://cdn.adscientificindex.com/logos/15936.png)
10
Yutaka Tobo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
35
0.897
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
359,955
![Japan](/flags/jp.png)
8,208
![](https://cdn.adscientificindex.com/logos/15936.png)
11
菅沼悠介
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
629,152
![Japan](/flags/jp.png)
13,158
![](https://cdn.adscientificindex.com/logos/15936.png)
15
Shun Tsutaki
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
17
0.850
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
632,729
![Japan](/flags/jp.png)
13,229
![](https://cdn.adscientificindex.com/logos/15936.png)
16
Masakazu Fujii
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
15
0.750
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
652,116
![Japan](/flags/jp.png)
13,555
![](https://cdn.adscientificindex.com/logos/15936.png)
17
Ryosuke Makabe
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
16
0.842
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
671,225
![Japan](/flags/jp.png)
13,871
![](https://cdn.adscientificindex.com/logos/15936.png)
18
Takeshige Ishiwa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
17
0.944
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
679,771
![Japan](/flags/jp.png)
14,003
![](https://cdn.adscientificindex.com/logos/15936.png)
20
Takahiro Iida
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
13
0.722
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* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
773,255
![Japan](/flags/jp.png)
15,497
![](https://cdn.adscientificindex.com/logos/15936.png)
22
Naoko Nagatsuka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
817,624
![Japan](/flags/jp.png)
16,215
![](https://cdn.adscientificindex.com/logos/15936.png)
24
Ikumi Oyabu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
10
0.769
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
1,208,305
![Japan](/flags/jp.png)
22,632
![](https://cdn.adscientificindex.com/logos/15936.png)
27
Shu-Kuan Wong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
1,731,314
![Japan](/flags/jp.png)
30,494
![](https://cdn.adscientificindex.com/logos/15936.png)
29
Sachin Alexander Reddy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
![](https://cdn.adscientificindex.com/logos/15936.png)
Space Plasma Physics
Ionospheres
Machine Learning
Space Weather